./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 35987657 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_test6_1.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 bd16a09b8249550fe27ec1d3745982255d6ee9946403f6860cbcc4680185e804 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 17:29:34,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 17:29:34,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 17:29:34,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 17:29:34,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 17:29:34,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 17:29:34,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 17:29:34,120 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 17:29:34,122 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 17:29:34,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 17:29:34,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 17:29:34,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 17:29:34,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 17:29:34,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 17:29:34,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 17:29:34,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 17:29:34,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 17:29:34,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 17:29:34,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 17:29:34,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 17:29:34,152 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 17:29:34,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 17:29:34,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 17:29:34,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 17:29:34,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 17:29:34,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 17:29:34,165 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 17:29:34,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 17:29:34,167 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 17:29:34,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 17:29:34,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 17:29:34,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 17:29:34,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 17:29:34,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 17:29:34,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 17:29:34,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 17:29:34,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 17:29:34,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 17:29:34,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 17:29:34,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 17:29:34,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 17:29:34,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 17:29:34,186 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-21 17:29:34,216 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 17:29:34,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 17:29:34,217 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 17:29:34,217 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 17:29:34,217 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 17:29:34,218 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 17:29:34,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 17:29:34,219 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 17:29:34,219 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 17:29:34,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 17:29:34,220 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 17:29:34,220 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-21 17:29:34,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 17:29:34,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 17:29:34,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 17:29:34,221 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-21 17:29:34,221 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-21 17:29:34,221 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-21 17:29:34,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 17:29:34,222 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 17:29:34,222 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 17:29:34,222 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 17:29:34,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 17:29:34,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 17:29:34,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 17:29:34,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 17:29:34,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 17:29:34,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 17:29:34,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 17:29:34,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 17:29:34,224 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd16a09b8249550fe27ec1d3745982255d6ee9946403f6860cbcc4680185e804 [2022-07-21 17:29:34,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 17:29:34,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 17:29:34,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 17:29:34,560 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 17:29:34,563 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 17:29:34,564 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2022-07-21 17:29:34,617 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4564783e3/7acdd3b8d0fc46dca22e7396fa1bdab8/FLAGee28f735f [2022-07-21 17:29:35,137 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 17:29:35,138 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2022-07-21 17:29:35,159 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4564783e3/7acdd3b8d0fc46dca22e7396fa1bdab8/FLAGee28f735f [2022-07-21 17:29:35,442 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4564783e3/7acdd3b8d0fc46dca22e7396fa1bdab8 [2022-07-21 17:29:35,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 17:29:35,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 17:29:35,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 17:29:35,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 17:29:35,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 17:29:35,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:29:35" (1/1) ... [2022-07-21 17:29:35,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74eb43da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:29:35, skipping insertion in model container [2022-07-21 17:29:35,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:29:35" (1/1) ... [2022-07-21 17:29:35,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 17:29:35,519 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 17:29:35,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 17:29:35,900 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) [2022-07-21 17:29:35,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4c345319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:29:35, skipping insertion in model container [2022-07-21 17:29:35,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 17:29:35,902 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-07-21 17:29:35,905 INFO L158 Benchmark]: Toolchain (without parser) took 456.29ms. Allocated memory is still 54.5MB. Free memory was 36.0MB in the beginning and 34.6MB in the end (delta: 1.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-21 17:29:35,906 INFO L158 Benchmark]: CDTParser took 0.92ms. Allocated memory is still 44.0MB. Free memory was 26.1MB in the beginning and 26.1MB in the end (delta: 34.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 17:29:35,907 INFO L158 Benchmark]: CACSL2BoogieTranslator took 452.48ms. Allocated memory is still 54.5MB. Free memory was 35.9MB in the beginning and 34.6MB in the end (delta: 1.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-21 17:29:35,909 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.92ms. Allocated memory is still 44.0MB. Free memory was 26.1MB in the beginning and 26.1MB in the end (delta: 34.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 452.48ms. Allocated memory is still 54.5MB. Free memory was 35.9MB in the beginning and 34.6MB in the end (delta: 1.3MB). Peak memory consumption was 12.6MB. 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_test6_1.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 bd16a09b8249550fe27ec1d3745982255d6ee9946403f6860cbcc4680185e804 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 17:29:37,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 17:29:37,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 17:29:37,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 17:29:37,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 17:29:37,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 17:29:37,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 17:29:37,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 17:29:37,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 17:29:37,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 17:29:37,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 17:29:37,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 17:29:37,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 17:29:37,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 17:29:37,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 17:29:37,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 17:29:37,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 17:29:37,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 17:29:37,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 17:29:37,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 17:29:37,731 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 17:29:37,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 17:29:37,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 17:29:37,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 17:29:37,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 17:29:37,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 17:29:37,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 17:29:37,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 17:29:37,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 17:29:37,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 17:29:37,744 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 17:29:37,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 17:29:37,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 17:29:37,747 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 17:29:37,748 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 17:29:37,749 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 17:29:37,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 17:29:37,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 17:29:37,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 17:29:37,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 17:29:37,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 17:29:37,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 17:29:37,757 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-07-21 17:29:37,784 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 17:29:37,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 17:29:37,784 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 17:29:37,785 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 17:29:37,785 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 17:29:37,785 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 17:29:37,786 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 17:29:37,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 17:29:37,786 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 17:29:37,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 17:29:37,787 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 17:29:37,787 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-21 17:29:37,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 17:29:37,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 17:29:37,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 17:29:37,792 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-21 17:29:37,792 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-21 17:29:37,792 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-21 17:29:37,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 17:29:37,792 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 17:29:37,793 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 17:29:37,793 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 17:29:37,793 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 17:29:37,793 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 17:29:37,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 17:29:37,794 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 17:29:37,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 17:29:37,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 17:29:37,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 17:29:37,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 17:29:37,795 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 17:29:37,795 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 17:29:37,796 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 17:29:37,796 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd16a09b8249550fe27ec1d3745982255d6ee9946403f6860cbcc4680185e804 [2022-07-21 17:29:38,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 17:29:38,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 17:29:38,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 17:29:38,116 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 17:29:38,117 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 17:29:38,119 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2022-07-21 17:29:38,178 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b74af298b/8fc1f85dba064310a0ad172600fe6472/FLAG45bd48058 [2022-07-21 17:29:38,642 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 17:29:38,646 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2022-07-21 17:29:38,666 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b74af298b/8fc1f85dba064310a0ad172600fe6472/FLAG45bd48058 [2022-07-21 17:29:38,685 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b74af298b/8fc1f85dba064310a0ad172600fe6472 [2022-07-21 17:29:38,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 17:29:38,689 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 17:29:38,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 17:29:38,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 17:29:38,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 17:29:38,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:29:38" (1/1) ... [2022-07-21 17:29:38,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30a68359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:29:38, skipping insertion in model container [2022-07-21 17:29:38,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:29:38" (1/1) ... [2022-07-21 17:29:38,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 17:29:38,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 17:29:39,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 17:29:39,129 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-21 17:29:39,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 17:29:39,178 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 17:29:39,187 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 17:29:39,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 17:29:39,303 INFO L208 MainTranslator]: Completed translation [2022-07-21 17:29:39,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:29:39 WrapperNode [2022-07-21 17:29:39,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 17:29:39,305 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 17:29:39,305 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 17:29:39,305 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 17:29:39,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:29:39" (1/1) ... [2022-07-21 17:29:39,354 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:29:39" (1/1) ... [2022-07-21 17:29:39,371 INFO L137 Inliner]: procedures = 169, calls = 79, calls flagged for inlining = 25, calls inlined = 7, statements flattened = 62 [2022-07-21 17:29:39,372 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 17:29:39,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 17:29:39,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 17:29:39,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 17:29:39,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:29:39" (1/1) ... [2022-07-21 17:29:39,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:29:39" (1/1) ... [2022-07-21 17:29:39,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:29:39" (1/1) ... [2022-07-21 17:29:39,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:29:39" (1/1) ... [2022-07-21 17:29:39,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:29:39" (1/1) ... [2022-07-21 17:29:39,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:29:39" (1/1) ... [2022-07-21 17:29:39,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:29:39" (1/1) ... [2022-07-21 17:29:39,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 17:29:39,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 17:29:39,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 17:29:39,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 17:29:39,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:29:39" (1/1) ... [2022-07-21 17:29:39,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 17:29:39,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:29:39,441 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) [2022-07-21 17:29:39,447 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 [2022-07-21 17:29:39,468 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 17:29:39,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 17:29:39,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 17:29:39,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 17:29:39,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 17:29:39,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 17:29:39,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 17:29:39,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 17:29:39,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 17:29:39,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 17:29:39,644 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 17:29:39,646 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 17:29:39,907 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 17:29:39,913 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 17:29:39,913 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 17:29:39,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:29:39 BoogieIcfgContainer [2022-07-21 17:29:39,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 17:29:39,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 17:29:39,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 17:29:39,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 17:29:39,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:29:38" (1/3) ... [2022-07-21 17:29:39,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76384fab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:29:39, skipping insertion in model container [2022-07-21 17:29:39,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:29:39" (2/3) ... [2022-07-21 17:29:39,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76384fab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:29:39, skipping insertion in model container [2022-07-21 17:29:39,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:29:39" (3/3) ... [2022-07-21 17:29:39,922 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test6_1.i [2022-07-21 17:29:39,934 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 17:29:39,936 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2022-07-21 17:29:39,993 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 17:29:40,012 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@627655e3, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7c25b03b [2022-07-21 17:29:40,015 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-07-21 17:29:40,021 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 40 states have internal predecessors, (45), 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) [2022-07-21 17:29:40,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-21 17:29:40,027 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:29:40,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:29:40,028 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2022-07-21 17:29:40,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:29:40,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1405574468, now seen corresponding path program 1 times [2022-07-21 17:29:40,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:29:40,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1147700743] [2022-07-21 17:29:40,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:29:40,042 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:29:40,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:29:40,051 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) [2022-07-21 17:29:40,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 17:29:40,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:29:40,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 17:29:40,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:29:40,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:29:40,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:29:40,241 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 17:29:40,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1147700743] [2022-07-21 17:29:40,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1147700743] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:29:40,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:29:40,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 17:29:40,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930560060] [2022-07-21 17:29:40,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:29:40,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 17:29:40,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 17:29:40,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 17:29:40,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:29:40,273 INFO L87 Difference]: Start difference. First operand has 43 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 40 states have internal predecessors, (45), 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) 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) [2022-07-21 17:29:40,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:29:40,383 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2022-07-21 17:29:40,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 17:29:40,387 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 [2022-07-21 17:29:40,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:29:40,395 INFO L225 Difference]: With dead ends: 80 [2022-07-21 17:29:40,396 INFO L226 Difference]: Without dead ends: 76 [2022-07-21 17:29:40,397 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 [2022-07-21 17:29:40,408 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 37 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:29:40,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 214 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:29:40,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-07-21 17:29:40,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 45. [2022-07-21 17:29:40,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 41 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:29:40,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2022-07-21 17:29:40,455 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 12 [2022-07-21 17:29:40,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:29:40,457 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2022-07-21 17:29:40,457 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) [2022-07-21 17:29:40,458 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2022-07-21 17:29:40,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-21 17:29:40,458 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:29:40,459 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:29:40,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-21 17:29:40,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:29:40,668 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2022-07-21 17:29:40,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:29:40,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1405608821, now seen corresponding path program 1 times [2022-07-21 17:29:40,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:29:40,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [415420581] [2022-07-21 17:29:40,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:29:40,670 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:29:40,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:29:40,674 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) [2022-07-21 17:29:40,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-21 17:29:40,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:29:40,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 17:29:40,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:29:40,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:29:40,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:29:40,762 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 17:29:40,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [415420581] [2022-07-21 17:29:40,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [415420581] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:29:40,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:29:40,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 17:29:40,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645290577] [2022-07-21 17:29:40,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:29:40,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 17:29:40,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 17:29:40,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 17:29:40,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:29:40,767 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 5 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) [2022-07-21 17:29:40,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:29:40,804 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2022-07-21 17:29:40,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 17:29:40,809 INFO L78 Accepts]: Start accepts. Automaton has has 5 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 [2022-07-21 17:29:40,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:29:40,811 INFO L225 Difference]: With dead ends: 44 [2022-07-21 17:29:40,812 INFO L226 Difference]: Without dead ends: 44 [2022-07-21 17:29:40,814 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 [2022-07-21 17:29:40,818 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 32 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:29:40,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 118 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:29:40,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-07-21 17:29:40,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-07-21 17:29:40,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 40 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:29:40,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2022-07-21 17:29:40,830 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 12 [2022-07-21 17:29:40,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:29:40,830 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2022-07-21 17:29:40,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 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) [2022-07-21 17:29:40,831 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2022-07-21 17:29:40,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-21 17:29:40,832 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:29:40,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:29:40,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-21 17:29:41,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:29:41,034 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2022-07-21 17:29:41,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:29:41,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1146582493, now seen corresponding path program 1 times [2022-07-21 17:29:41,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:29:41,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934429174] [2022-07-21 17:29:41,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:29:41,040 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:29:41,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:29:41,042 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) [2022-07-21 17:29:41,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-21 17:29:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:29:41,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 17:29:41,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:29:41,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:29:41,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:29:41,265 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 17:29:41,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934429174] [2022-07-21 17:29:41,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934429174] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:29:41,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:29:41,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 17:29:41,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080457865] [2022-07-21 17:29:41,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:29:41,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 17:29:41,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 17:29:41,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 17:29:41,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 17:29:41,269 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2022-07-21 17:29:41,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:29:41,349 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2022-07-21 17:29:41,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 17:29:41,349 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 [2022-07-21 17:29:41,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:29:41,350 INFO L225 Difference]: With dead ends: 60 [2022-07-21 17:29:41,350 INFO L226 Difference]: Without dead ends: 60 [2022-07-21 17:29:41,351 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 [2022-07-21 17:29:41,352 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 33 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:29:41,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 64 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:29:41,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-07-21 17:29:41,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 47. [2022-07-21 17:29:41,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 32 states have (on average 1.5625) internal successors, (50), 43 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:29:41,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2022-07-21 17:29:41,357 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 12 [2022-07-21 17:29:41,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:29:41,358 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2022-07-21 17:29:41,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2022-07-21 17:29:41,358 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2022-07-21 17:29:41,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-21 17:29:41,359 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:29:41,359 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:29:41,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-21 17:29:41,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:29:41,568 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2022-07-21 17:29:41,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:29:41,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1146582492, now seen corresponding path program 1 times [2022-07-21 17:29:41,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:29:41,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693976935] [2022-07-21 17:29:41,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:29:41,570 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:29:41,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:29:41,572 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) [2022-07-21 17:29:41,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-21 17:29:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:29:41,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 17:29:41,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:29:41,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:29:41,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:29:41,753 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 17:29:41,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [693976935] [2022-07-21 17:29:41,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [693976935] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:29:41,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:29:41,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 17:29:41,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512524455] [2022-07-21 17:29:41,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:29:41,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 17:29:41,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 17:29:41,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 17:29:41,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 17:29:41,755 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2022-07-21 17:29:41,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:29:41,851 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2022-07-21 17:29:41,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 17:29:41,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 [2022-07-21 17:29:41,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:29:41,852 INFO L225 Difference]: With dead ends: 80 [2022-07-21 17:29:41,853 INFO L226 Difference]: Without dead ends: 80 [2022-07-21 17:29:41,853 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 [2022-07-21 17:29:41,853 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 35 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:29:41,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 126 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:29:41,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-07-21 17:29:41,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 67. [2022-07-21 17:29:41,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 52 states have (on average 1.6153846153846154) internal successors, (84), 63 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:29:41,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2022-07-21 17:29:41,860 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 12 [2022-07-21 17:29:41,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:29:41,860 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2022-07-21 17:29:41,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2022-07-21 17:29:41,860 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2022-07-21 17:29:41,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-21 17:29:41,861 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:29:41,861 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:29:41,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-21 17:29:42,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:29:42,070 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2022-07-21 17:29:42,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:29:42,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1146582909, now seen corresponding path program 1 times [2022-07-21 17:29:42,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:29:42,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1952853577] [2022-07-21 17:29:42,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:29:42,072 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:29:42,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:29:42,073 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) [2022-07-21 17:29:42,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-21 17:29:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:29:42,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 17:29:42,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:29:42,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:29:42,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:29:42,149 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 17:29:42,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1952853577] [2022-07-21 17:29:42,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1952853577] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:29:42,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:29:42,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 17:29:42,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94575574] [2022-07-21 17:29:42,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:29:42,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 17:29:42,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 17:29:42,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 17:29:42,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:29:42,151 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2022-07-21 17:29:42,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:29:42,184 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2022-07-21 17:29:42,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 17:29:42,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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 [2022-07-21 17:29:42,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:29:42,186 INFO L225 Difference]: With dead ends: 73 [2022-07-21 17:29:42,186 INFO L226 Difference]: Without dead ends: 73 [2022-07-21 17:29:42,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:29:42,187 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 16 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:29:42,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 150 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:29:42,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-07-21 17:29:42,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2022-07-21 17:29:42,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 54 states have (on average 1.5925925925925926) internal successors, (86), 65 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:29:42,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2022-07-21 17:29:42,202 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 12 [2022-07-21 17:29:42,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:29:42,202 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2022-07-21 17:29:42,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2022-07-21 17:29:42,202 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2022-07-21 17:29:42,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-21 17:29:42,203 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:29:42,203 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:29:42,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-21 17:29:42,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:29:42,412 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2022-07-21 17:29:42,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:29:42,413 INFO L85 PathProgramCache]: Analyzing trace with hash 624200559, now seen corresponding path program 1 times [2022-07-21 17:29:42,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:29:42,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1220914132] [2022-07-21 17:29:42,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:29:42,413 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:29:42,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:29:42,414 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) [2022-07-21 17:29:42,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-21 17:29:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:29:42,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 17:29:42,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:29:42,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:29:42,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:29:42,544 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 17:29:42,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1220914132] [2022-07-21 17:29:42,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1220914132] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:29:42,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:29:42,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 17:29:42,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278803805] [2022-07-21 17:29:42,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:29:42,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 17:29:42,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 17:29:42,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 17:29:42,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:29:42,545 INFO L87 Difference]: Start difference. First operand 69 states and 89 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-07-21 17:29:42,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:29:42,614 INFO L93 Difference]: Finished difference Result 81 states and 90 transitions. [2022-07-21 17:29:42,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 17:29:42,614 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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 13 [2022-07-21 17:29:42,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:29:42,615 INFO L225 Difference]: With dead ends: 81 [2022-07-21 17:29:42,615 INFO L226 Difference]: Without dead ends: 81 [2022-07-21 17:29:42,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:29:42,616 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 97 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:29:42,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 137 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:29:42,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-07-21 17:29:42,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 69. [2022-07-21 17:29:42,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 54 states have (on average 1.5740740740740742) internal successors, (85), 65 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:29:42,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 88 transitions. [2022-07-21 17:29:42,621 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 88 transitions. Word has length 13 [2022-07-21 17:29:42,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:29:42,621 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 88 transitions. [2022-07-21 17:29:42,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-07-21 17:29:42,621 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 88 transitions. [2022-07-21 17:29:42,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-21 17:29:42,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:29:42,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:29:42,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-21 17:29:42,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:29:42,831 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2022-07-21 17:29:42,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:29:42,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1183253904, now seen corresponding path program 1 times [2022-07-21 17:29:42,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:29:42,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331946567] [2022-07-21 17:29:42,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:29:42,832 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:29:42,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:29:42,834 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) [2022-07-21 17:29:42,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-21 17:29:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:29:42,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 17:29:42,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:29:42,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:29:42,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:29:42,924 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 17:29:42,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331946567] [2022-07-21 17:29:42,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331946567] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:29:42,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:29:42,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 17:29:42,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197356304] [2022-07-21 17:29:42,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:29:42,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 17:29:42,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 17:29:42,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 17:29:42,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:29:42,928 INFO L87 Difference]: Start difference. First operand 69 states and 88 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-07-21 17:29:42,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:29:42,950 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2022-07-21 17:29:42,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 17:29:42,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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 13 [2022-07-21 17:29:42,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:29:42,953 INFO L225 Difference]: With dead ends: 52 [2022-07-21 17:29:42,953 INFO L226 Difference]: Without dead ends: 52 [2022-07-21 17:29:42,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:29:42,954 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 161 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 [2022-07-21 17:29:42,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 161 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:29:42,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-07-21 17:29:42,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2022-07-21 17:29:42,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 35 states have (on average 1.457142857142857) internal successors, (51), 45 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:29:42,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2022-07-21 17:29:42,971 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 13 [2022-07-21 17:29:42,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:29:42,972 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2022-07-21 17:29:42,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-07-21 17:29:42,972 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2022-07-21 17:29:42,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-21 17:29:42,974 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:29:42,975 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:29:42,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-21 17:29:43,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:29:43,184 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2022-07-21 17:29:43,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:29:43,185 INFO L85 PathProgramCache]: Analyzing trace with hash -2124619081, now seen corresponding path program 1 times [2022-07-21 17:29:43,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:29:43,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112743743] [2022-07-21 17:29:43,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:29:43,185 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:29:43,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:29:43,186 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) [2022-07-21 17:29:43,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-21 17:29:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:29:43,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 17:29:43,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:29:43,245 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 [2022-07-21 17:29:43,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:29:43,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:29:43,270 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 17:29:43,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112743743] [2022-07-21 17:29:43,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112743743] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:29:43,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:29:43,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 17:29:43,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772794275] [2022-07-21 17:29:43,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:29:43,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 17:29:43,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 17:29:43,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 17:29:43,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:29:43,272 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 5 states, 4 states have (on average 3.0) 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) [2022-07-21 17:29:43,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:29:43,355 INFO L93 Difference]: Finished difference Result 61 states and 64 transitions. [2022-07-21 17:29:43,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 17:29:43,356 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) 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 [2022-07-21 17:29:43,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:29:43,356 INFO L225 Difference]: With dead ends: 61 [2022-07-21 17:29:43,356 INFO L226 Difference]: Without dead ends: 61 [2022-07-21 17:29:43,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:29:43,357 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 23 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:29:43,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 106 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:29:43,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-07-21 17:29:43,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 48. [2022-07-21 17:29:43,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 44 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:29:43,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2022-07-21 17:29:43,360 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 14 [2022-07-21 17:29:43,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:29:43,360 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2022-07-21 17:29:43,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) 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) [2022-07-21 17:29:43,360 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2022-07-21 17:29:43,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-21 17:29:43,360 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:29:43,360 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:29:43,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-21 17:29:43,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:29:43,561 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2022-07-21 17:29:43,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:29:43,562 INFO L85 PathProgramCache]: Analyzing trace with hash -2124571317, now seen corresponding path program 1 times [2022-07-21 17:29:43,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:29:43,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1974299250] [2022-07-21 17:29:43,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:29:43,562 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:29:43,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:29:43,563 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) [2022-07-21 17:29:43,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-21 17:29:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:29:43,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-21 17:29:43,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:29:45,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:29:45,775 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-21 17:29:45,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:29:45,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:29:45,875 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 17:29:45,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1974299250] [2022-07-21 17:29:45,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1974299250] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:29:45,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:29:45,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 17:29:45,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392429460] [2022-07-21 17:29:45,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:29:45,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:29:45,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 17:29:45,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:29:45,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=29, Unknown=1, NotChecked=0, Total=42 [2022-07-21 17:29:45,876 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 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) [2022-07-21 17:29:46,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:29:46,049 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2022-07-21 17:29:46,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 17:29:46,049 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 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 [2022-07-21 17:29:46,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:29:46,050 INFO L225 Difference]: With dead ends: 66 [2022-07-21 17:29:46,050 INFO L226 Difference]: Without dead ends: 66 [2022-07-21 17:29:46,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=25, Invalid=64, Unknown=1, NotChecked=0, Total=90 [2022-07-21 17:29:46,050 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 61 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:29:46,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 155 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 78 Invalid, 0 Unknown, 17 Unchecked, 0.1s Time] [2022-07-21 17:29:46,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-07-21 17:29:46,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 47. [2022-07-21 17:29:46,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 35 states have (on average 1.4) internal successors, (49), 43 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:29:46,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2022-07-21 17:29:46,053 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 14 [2022-07-21 17:29:46,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:29:46,054 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2022-07-21 17:29:46,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 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) [2022-07-21 17:29:46,054 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2022-07-21 17:29:46,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-21 17:29:46,055 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:29:46,055 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:29:46,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-21 17:29:46,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:29:46,264 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2022-07-21 17:29:46,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:29:46,264 INFO L85 PathProgramCache]: Analyzing trace with hash -2124571318, now seen corresponding path program 1 times [2022-07-21 17:29:46,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:29:46,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123926892] [2022-07-21 17:29:46,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:29:46,265 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:29:46,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:29:46,266 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) [2022-07-21 17:29:46,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-21 17:29:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:29:46,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 17:29:46,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:29:46,385 INFO L356 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-07-21 17:29:46,385 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 1 case distinctions, treesize of input 12 treesize of output 17 [2022-07-21 17:29:46,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:29:46,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:29:46,425 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 17:29:46,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123926892] [2022-07-21 17:29:46,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123926892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:29:46,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:29:46,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 17:29:46,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571913158] [2022-07-21 17:29:46,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:29:46,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 17:29:46,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 17:29:46,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 17:29:46,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:29:46,426 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2022-07-21 17:29:46,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:29:46,536 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2022-07-21 17:29:46,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 17:29:46,537 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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 [2022-07-21 17:29:46,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:29:46,537 INFO L225 Difference]: With dead ends: 59 [2022-07-21 17:29:46,537 INFO L226 Difference]: Without dead ends: 59 [2022-07-21 17:29:46,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:29:46,538 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 30 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:29:46,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 113 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 13 Unchecked, 0.1s Time] [2022-07-21 17:29:46,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-07-21 17:29:46,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 46. [2022-07-21 17:29:46,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 42 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:29:46,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2022-07-21 17:29:46,541 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 14 [2022-07-21 17:29:46,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:29:46,541 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2022-07-21 17:29:46,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2022-07-21 17:29:46,541 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2022-07-21 17:29:46,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-21 17:29:46,542 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:29:46,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:29:46,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-21 17:29:46,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:29:46,752 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2022-07-21 17:29:46,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:29:46,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1940820388, now seen corresponding path program 1 times [2022-07-21 17:29:46,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:29:46,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619328547] [2022-07-21 17:29:46,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:29:46,753 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:29:46,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:29:46,754 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) [2022-07-21 17:29:46,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-21 17:29:46,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:29:46,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 17:29:46,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:29:46,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:29:46,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:29:46,826 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 17:29:46,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [619328547] [2022-07-21 17:29:46,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [619328547] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:29:46,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:29:46,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 17:29:46,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812882415] [2022-07-21 17:29:46,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:29:46,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 17:29:46,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 17:29:46,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 17:29:46,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 17:29:46,828 INFO L87 Difference]: Start difference. First operand 46 states and 51 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) [2022-07-21 17:29:46,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:29:46,872 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2022-07-21 17:29:46,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 17:29:46,873 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 [2022-07-21 17:29:46,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:29:46,873 INFO L225 Difference]: With dead ends: 48 [2022-07-21 17:29:46,873 INFO L226 Difference]: Without dead ends: 39 [2022-07-21 17:29:46,874 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 [2022-07-21 17:29:46,874 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 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 [2022-07-21 17:29:46,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:29:46,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-07-21 17:29:46,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-07-21 17:29:46,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 36 states have internal predecessors, (41), 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) [2022-07-21 17:29:46,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-07-21 17:29:46,876 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 14 [2022-07-21 17:29:46,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:29:46,876 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-07-21 17:29:46,876 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) [2022-07-21 17:29:46,876 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-07-21 17:29:46,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-21 17:29:46,877 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:29:46,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:29:46,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-21 17:29:47,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:29:47,084 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2022-07-21 17:29:47,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:29:47,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1603618149, now seen corresponding path program 1 times [2022-07-21 17:29:47,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:29:47,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [869818461] [2022-07-21 17:29:47,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:29:47,085 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:29:47,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:29:47,086 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) [2022-07-21 17:29:47,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-21 17:29:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:29:47,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 17:29:47,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:29:49,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:29:49,272 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-21 17:29:49,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:29:49,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:29:49,358 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 17:29:49,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [869818461] [2022-07-21 17:29:49,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [869818461] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:29:49,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:29:49,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 17:29:49,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813600544] [2022-07-21 17:29:49,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:29:49,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 17:29:49,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 17:29:49,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 17:29:49,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=19, Unknown=1, NotChecked=0, Total=30 [2022-07-21 17:29:49,360 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2022-07-21 17:29:49,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:29:49,464 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2022-07-21 17:29:49,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 17:29:49,465 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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 [2022-07-21 17:29:49,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:29:49,465 INFO L225 Difference]: With dead ends: 38 [2022-07-21 17:29:49,465 INFO L226 Difference]: Without dead ends: 38 [2022-07-21 17:29:49,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=20, Invalid=35, Unknown=1, NotChecked=0, Total=56 [2022-07-21 17:29:49,466 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 25 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:29:49,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 89 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 11 Unchecked, 0.1s Time] [2022-07-21 17:29:49,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-07-21 17:29:49,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-07-21 17:29:49,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 35 states have internal predecessors, (39), 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) [2022-07-21 17:29:49,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2022-07-21 17:29:49,468 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 16 [2022-07-21 17:29:49,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:29:49,469 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2022-07-21 17:29:49,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2022-07-21 17:29:49,469 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2022-07-21 17:29:49,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-21 17:29:49,469 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:29:49,469 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:29:49,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-21 17:29:49,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:29:49,672 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2022-07-21 17:29:49,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:29:49,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1603618566, now seen corresponding path program 1 times [2022-07-21 17:29:49,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:29:49,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675272079] [2022-07-21 17:29:49,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:29:49,672 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:29:49,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:29:49,674 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) [2022-07-21 17:29:49,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-21 17:29:49,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:29:49,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 17:29:49,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:29:49,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:29:49,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:29:49,733 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 17:29:49,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675272079] [2022-07-21 17:29:49,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675272079] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:29:49,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:29:49,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 17:29:49,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549216375] [2022-07-21 17:29:49,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:29:49,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 17:29:49,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 17:29:49,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 17:29:49,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 17:29:49,735 INFO L87 Difference]: Start difference. First operand 38 states and 41 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) [2022-07-21 17:29:49,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:29:49,764 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2022-07-21 17:29:49,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 17:29:49,765 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 [2022-07-21 17:29:49,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:29:49,765 INFO L225 Difference]: With dead ends: 44 [2022-07-21 17:29:49,765 INFO L226 Difference]: Without dead ends: 44 [2022-07-21 17:29:49,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:29:49,766 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 9 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:29:49,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 100 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:29:49,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-07-21 17:29:49,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2022-07-21 17:29:49,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 37 states have internal predecessors, (41), 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) [2022-07-21 17:29:49,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2022-07-21 17:29:49,768 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 16 [2022-07-21 17:29:49,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:29:49,769 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2022-07-21 17:29:49,769 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) [2022-07-21 17:29:49,769 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2022-07-21 17:29:49,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-21 17:29:49,770 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:29:49,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:29:49,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-21 17:29:49,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:29:49,979 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2022-07-21 17:29:49,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:29:49,980 INFO L85 PathProgramCache]: Analyzing trace with hash 406071093, now seen corresponding path program 1 times [2022-07-21 17:29:49,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:29:49,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [949069033] [2022-07-21 17:29:49,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:29:49,981 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:29:49,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:29:49,983 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) [2022-07-21 17:29:49,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-21 17:29:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:29:50,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 17:29:50,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:29:50,124 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-21 17:29:50,125 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 25 [2022-07-21 17:29:50,223 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-21 17:29:50,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:29:50,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:29:50,238 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 17:29:50,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [949069033] [2022-07-21 17:29:50,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [949069033] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:29:50,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:29:50,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 17:29:50,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984250995] [2022-07-21 17:29:50,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:29:50,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:29:50,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 17:29:50,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:29:50,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:29:50,240 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 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) [2022-07-21 17:29:50,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:29:50,343 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2022-07-21 17:29:50,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 17:29:50,344 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 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 17 [2022-07-21 17:29:50,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:29:50,351 INFO L225 Difference]: With dead ends: 44 [2022-07-21 17:29:50,351 INFO L226 Difference]: Without dead ends: 44 [2022-07-21 17:29:50,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:29:50,352 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 46 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:29:50,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 80 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 19 Unchecked, 0.1s Time] [2022-07-21 17:29:50,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-07-21 17:29:50,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2022-07-21 17:29:50,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 35 states have internal predecessors, (38), 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) [2022-07-21 17:29:50,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2022-07-21 17:29:50,354 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 17 [2022-07-21 17:29:50,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:29:50,354 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2022-07-21 17:29:50,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 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) [2022-07-21 17:29:50,354 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2022-07-21 17:29:50,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-21 17:29:50,354 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:29:50,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:29:50,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-21 17:29:50,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:29:50,567 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2022-07-21 17:29:50,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:29:50,568 INFO L85 PathProgramCache]: Analyzing trace with hash 406070677, now seen corresponding path program 1 times [2022-07-21 17:29:50,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:29:50,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2007615103] [2022-07-21 17:29:50,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:29:50,568 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:29:50,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:29:50,572 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) [2022-07-21 17:29:50,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-21 17:29:50,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:29:50,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 17:29:50,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:29:50,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:29:50,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:29:50,632 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 17:29:50,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2007615103] [2022-07-21 17:29:50,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2007615103] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:29:50,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:29:50,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 17:29:50,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361957281] [2022-07-21 17:29:50,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:29:50,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 17:29:50,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 17:29:50,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 17:29:50,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:29:50,633 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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) [2022-07-21 17:29:50,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:29:50,667 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2022-07-21 17:29:50,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 17:29:50,668 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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 17 [2022-07-21 17:29:50,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:29:50,669 INFO L225 Difference]: With dead ends: 44 [2022-07-21 17:29:50,669 INFO L226 Difference]: Without dead ends: 44 [2022-07-21 17:29:50,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:29:50,670 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 15 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:29:50,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 125 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:29:50,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-07-21 17:29:50,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2022-07-21 17:29:50,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 35 states have internal predecessors, (38), 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) [2022-07-21 17:29:50,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2022-07-21 17:29:50,672 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 17 [2022-07-21 17:29:50,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:29:50,672 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2022-07-21 17:29:50,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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) [2022-07-21 17:29:50,672 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2022-07-21 17:29:50,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-21 17:29:50,673 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:29:50,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:29:50,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-21 17:29:50,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:29:50,874 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2022-07-21 17:29:50,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:29:50,874 INFO L85 PathProgramCache]: Analyzing trace with hash 816218203, now seen corresponding path program 1 times [2022-07-21 17:29:50,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:29:50,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106244072] [2022-07-21 17:29:50,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:29:50,875 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:29:50,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:29:50,876 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) [2022-07-21 17:29:50,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-21 17:29:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 17:29:50,927 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 17:29:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 17:29:50,973 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-21 17:29:50,973 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 17:29:50,974 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2022-07-21 17:29:50,975 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2022-07-21 17:29:50,975 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2022-07-21 17:29:50,976 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (9 of 13 remaining) [2022-07-21 17:29:50,976 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE (8 of 13 remaining) [2022-07-21 17:29:50,976 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (7 of 13 remaining) [2022-07-21 17:29:50,976 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2022-07-21 17:29:50,976 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2022-07-21 17:29:50,976 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE (4 of 13 remaining) [2022-07-21 17:29:50,977 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE (3 of 13 remaining) [2022-07-21 17:29:50,977 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE (2 of 13 remaining) [2022-07-21 17:29:50,977 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 13 remaining) [2022-07-21 17:29:50,977 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 13 remaining) [2022-07-21 17:29:50,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-21 17:29:51,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:29:51,181 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:29:51,184 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 17:29:51,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 05:29:51 BoogieIcfgContainer [2022-07-21 17:29:51,213 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 17:29:51,214 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 17:29:51,214 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 17:29:51,214 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 17:29:51,215 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:29:39" (3/4) ... [2022-07-21 17:29:51,217 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-21 17:29:51,218 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 17:29:51,218 INFO L158 Benchmark]: Toolchain (without parser) took 12529.40ms. Allocated memory was 56.6MB in the beginning and 86.0MB in the end (delta: 29.4MB). Free memory was 33.3MB in the beginning and 47.7MB in the end (delta: -14.4MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. [2022-07-21 17:29:51,219 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 56.6MB. Free memory was 38.1MB in the beginning and 38.1MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 17:29:51,220 INFO L158 Benchmark]: CACSL2BoogieTranslator took 612.61ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 33.2MB in the beginning and 48.4MB in the end (delta: -15.2MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. [2022-07-21 17:29:51,220 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.59ms. Allocated memory is still 69.2MB. Free memory was 48.4MB in the beginning and 46.0MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-21 17:29:51,220 INFO L158 Benchmark]: Boogie Preprocessor took 36.16ms. Allocated memory is still 69.2MB. Free memory was 46.0MB in the beginning and 44.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 17:29:51,220 INFO L158 Benchmark]: RCFGBuilder took 505.53ms. Allocated memory is still 69.2MB. Free memory was 44.5MB in the beginning and 48.9MB in the end (delta: -4.4MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. [2022-07-21 17:29:51,221 INFO L158 Benchmark]: TraceAbstraction took 11296.96ms. Allocated memory was 69.2MB in the beginning and 86.0MB in the end (delta: 16.8MB). Free memory was 48.5MB in the beginning and 47.7MB in the end (delta: 744.8kB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. [2022-07-21 17:29:51,221 INFO L158 Benchmark]: Witness Printer took 3.66ms. Allocated memory is still 86.0MB. Free memory is still 47.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 17:29:51,227 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 56.6MB. Free memory was 38.1MB in the beginning and 38.1MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 612.61ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 33.2MB in the beginning and 48.4MB in the end (delta: -15.2MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.59ms. Allocated memory is still 69.2MB. Free memory was 48.4MB in the beginning and 46.0MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.16ms. Allocated memory is still 69.2MB. Free memory was 46.0MB in the beginning and 44.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 505.53ms. Allocated memory is still 69.2MB. Free memory was 44.5MB in the beginning and 48.9MB in the end (delta: -4.4MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. * TraceAbstraction took 11296.96ms. Allocated memory was 69.2MB in the beginning and 86.0MB in the end (delta: 16.8MB). Free memory was 48.5MB in the beginning and 47.7MB in the end (delta: 744.8kB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. * Witness Printer took 3.66ms. Allocated memory is still 86.0MB. Free memory is still 47.7MB. There was no memory consumed. 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 - UnprovableResult [Line: 791]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 791. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L783] struct A a6; VAL [a6={2:0}, ldv_global_msg_list={1:0}] [L792] CALL entry_point() [L785] CALL, EXPR probe2_6(&a6) [L764] int ret = - -3; VAL [a={2:0}, a={2:0}, a6={2:0}, ldv_global_msg_list={1:0}, ret=3] [L765] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4, a6={2:0}, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L765] RET, EXPR ldv_malloc(sizeof(int)) VAL [a={2:0}, a={2:0}, a6={2:0}, ldv_global_msg_list={1:0}, ldv_malloc(sizeof(int))={6:0}, ret=3] [L765] int *p = (int *)ldv_malloc(sizeof(int)); [L766] COND FALSE !(p==0) [L768] CALL, EXPR f6() [L758] return __VERIFIER_nondet_int(); [L768] RET, EXPR f6() [L768] ret = f6() [L769] COND FALSE !(ret<0) [L771] CALL, EXPR g6() [L761] return __VERIFIER_nondet_int(); [L771] RET, EXPR g6() [L771] ret = g6() [L772] COND TRUE ret<0 [L773] return ret; VAL [\result=-2147483648, a={2:0}, a={2:0}, a6={2:0}, ldv_global_msg_list={1:0}, p={6:0}, ret=2147483648] [L785] RET, EXPR probe2_6(&a6) [L785] int ret = probe2_6(&a6); [L786] COND FALSE !(ret==0) VAL [a6={2:0}, ldv_global_msg_list={1:0}, ret=2147483648] [L789] a6.p = 0 VAL [a6={2:0}, ldv_global_msg_list={1:0}, ret=2147483648] [L792] RET entry_point() - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 43 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 11.2s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 466 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 465 mSDsluCounter, 1830 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 60 IncrementalHoareTripleChecker+Unchecked, 1261 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 544 IncrementalHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 569 mSDtfsCounter, 544 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 211 GetRequests, 143 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=5, InterpolantAutomatonStates: 80, 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, 15 MinimizatonAttempts, 137 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 226 NumberOfCodeBlocks, 226 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 193 ConstructedInterpolants, 8 QuantifiedInterpolants, 1198 SizeOfPredicates, 18 NumberOfNonLiveVariables, 806 ConjunctsInSsa, 98 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-21 17:29:51,263 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: UNKNOWN: Overapproximated counterexample