./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 6c24879c 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-?-6c24879 [2022-07-12 18:58:13,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 18:58:13,682 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 18:58:13,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 18:58:13,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 18:58:13,728 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 18:58:13,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 18:58:13,732 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 18:58:13,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 18:58:13,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 18:58:13,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 18:58:13,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 18:58:13,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 18:58:13,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 18:58:13,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 18:58:13,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 18:58:13,749 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 18:58:13,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 18:58:13,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 18:58:13,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 18:58:13,762 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 18:58:13,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 18:58:13,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 18:58:13,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 18:58:13,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 18:58:13,773 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 18:58:13,773 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 18:58:13,774 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 18:58:13,775 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 18:58:13,775 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 18:58:13,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 18:58:13,777 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 18:58:13,778 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 18:58:13,779 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 18:58:13,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 18:58:13,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 18:58:13,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 18:58:13,781 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 18:58:13,781 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 18:58:13,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 18:58:13,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 18:58:13,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 18:58:13,785 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-12 18:58:13,814 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 18:58:13,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 18:58:13,815 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 18:58:13,815 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 18:58:13,816 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 18:58:13,816 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 18:58:13,817 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 18:58:13,817 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 18:58:13,817 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 18:58:13,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 18:58:13,818 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 18:58:13,818 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-12 18:58:13,818 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 18:58:13,819 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 18:58:13,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 18:58:13,819 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-12 18:58:13,819 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-12 18:58:13,820 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-12 18:58:13,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 18:58:13,820 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 18:58:13,820 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 18:58:13,820 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 18:58:13,820 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 18:58:13,821 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 18:58:13,821 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 18:58:13,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 18:58:13,821 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 18:58:13,821 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 18:58:13,822 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 18:58:13,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 18:58:13,822 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd16a09b8249550fe27ec1d3745982255d6ee9946403f6860cbcc4680185e804 [2022-07-12 18:58:14,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 18:58:14,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 18:58:14,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 18:58:14,092 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 18:58:14,092 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 18:58:14,093 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2022-07-12 18:58:14,174 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc8769d29/b7277c11ad6f43ee81ec610c400e4737/FLAGffe95330b [2022-07-12 18:58:14,750 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 18:58:14,750 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2022-07-12 18:58:14,770 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc8769d29/b7277c11ad6f43ee81ec610c400e4737/FLAGffe95330b [2022-07-12 18:58:15,129 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc8769d29/b7277c11ad6f43ee81ec610c400e4737 [2022-07-12 18:58:15,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 18:58:15,133 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 18:58:15,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 18:58:15,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 18:58:15,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 18:58:15,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:58:15" (1/1) ... [2022-07-12 18:58:15,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2567ad87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:58:15, skipping insertion in model container [2022-07-12 18:58:15,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:58:15" (1/1) ... [2022-07-12 18:58:15,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 18:58:15,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 18:58:15,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 18:58:15,582 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) [2022-07-12 18:58:15,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6e22ea27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:58:15, skipping insertion in model container [2022-07-12 18:58:15,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 18:58:15,584 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-07-12 18:58:15,585 INFO L158 Benchmark]: Toolchain (without parser) took 450.88ms. Allocated memory is still 92.3MB. Free memory was 56.4MB in the beginning and 42.9MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-12 18:58:15,585 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 92.3MB. Free memory is still 71.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 18:58:15,586 INFO L158 Benchmark]: CACSL2BoogieTranslator took 447.25ms. Allocated memory is still 92.3MB. Free memory was 56.2MB in the beginning and 43.0MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-12 18:58:15,588 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 92.3MB. Free memory is still 71.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 447.25ms. Allocated memory is still 92.3MB. Free memory was 56.2MB in the beginning and 43.0MB in the end (delta: 13.2MB). 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-?-6c24879 [2022-07-12 18:58:17,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 18:58:17,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 18:58:17,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 18:58:17,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 18:58:17,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 18:58:17,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 18:58:17,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 18:58:17,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 18:58:17,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 18:58:17,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 18:58:17,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 18:58:17,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 18:58:17,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 18:58:17,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 18:58:17,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 18:58:17,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 18:58:17,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 18:58:17,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 18:58:17,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 18:58:17,463 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 18:58:17,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 18:58:17,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 18:58:17,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 18:58:17,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 18:58:17,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 18:58:17,473 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 18:58:17,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 18:58:17,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 18:58:17,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 18:58:17,475 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 18:58:17,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 18:58:17,477 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 18:58:17,478 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 18:58:17,479 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 18:58:17,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 18:58:17,480 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 18:58:17,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 18:58:17,480 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 18:58:17,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 18:58:17,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 18:58:17,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 18:58:17,489 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-07-12 18:58:17,509 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 18:58:17,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 18:58:17,509 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 18:58:17,510 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 18:58:17,510 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 18:58:17,511 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 18:58:17,511 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 18:58:17,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 18:58:17,511 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 18:58:17,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 18:58:17,512 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 18:58:17,513 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-12 18:58:17,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 18:58:17,513 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 18:58:17,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 18:58:17,513 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-12 18:58:17,513 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-12 18:58:17,514 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-12 18:58:17,514 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 18:58:17,514 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 18:58:17,514 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 18:58:17,514 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 18:58:17,515 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 18:58:17,515 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 18:58:17,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 18:58:17,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 18:58:17,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 18:58:17,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 18:58:17,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 18:58:17,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 18:58:17,516 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 18:58:17,516 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 18:58:17,517 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 18:58:17,517 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd16a09b8249550fe27ec1d3745982255d6ee9946403f6860cbcc4680185e804 [2022-07-12 18:58:17,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 18:58:17,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 18:58:17,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 18:58:17,865 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 18:58:17,866 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 18:58:17,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2022-07-12 18:58:17,932 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7b6d4415/6e0586549762496a965b56fd68edf8bd/FLAG71528ae64 [2022-07-12 18:58:18,465 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 18:58:18,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2022-07-12 18:58:18,478 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7b6d4415/6e0586549762496a965b56fd68edf8bd/FLAG71528ae64 [2022-07-12 18:58:18,774 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7b6d4415/6e0586549762496a965b56fd68edf8bd [2022-07-12 18:58:18,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 18:58:18,778 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 18:58:18,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 18:58:18,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 18:58:18,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 18:58:18,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:58:18" (1/1) ... [2022-07-12 18:58:18,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@629af94f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:58:18, skipping insertion in model container [2022-07-12 18:58:18,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:58:18" (1/1) ... [2022-07-12 18:58:18,789 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 18:58:18,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 18:58:19,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 18:58:19,232 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-12 18:58:19,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 18:58:19,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 18:58:19,315 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 18:58:19,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 18:58:19,426 INFO L208 MainTranslator]: Completed translation [2022-07-12 18:58:19,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:58:19 WrapperNode [2022-07-12 18:58:19,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 18:58:19,428 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 18:58:19,429 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 18:58:19,429 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 18:58:19,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:58:19" (1/1) ... [2022-07-12 18:58:19,472 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:58:19" (1/1) ... [2022-07-12 18:58:19,498 INFO L137 Inliner]: procedures = 169, calls = 79, calls flagged for inlining = 25, calls inlined = 7, statements flattened = 62 [2022-07-12 18:58:19,499 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 18:58:19,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 18:58:19,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 18:58:19,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 18:58:19,507 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:58:19" (1/1) ... [2022-07-12 18:58:19,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:58:19" (1/1) ... [2022-07-12 18:58:19,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:58:19" (1/1) ... [2022-07-12 18:58:19,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:58:19" (1/1) ... [2022-07-12 18:58:19,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:58:19" (1/1) ... [2022-07-12 18:58:19,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:58:19" (1/1) ... [2022-07-12 18:58:19,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:58:19" (1/1) ... [2022-07-12 18:58:19,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 18:58:19,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 18:58:19,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 18:58:19,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 18:58:19,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:58:19" (1/1) ... [2022-07-12 18:58:19,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 18:58:19,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 18:58:19,587 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) [2022-07-12 18:58:19,614 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 [2022-07-12 18:58:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-12 18:58:19,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-12 18:58:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 18:58:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 18:58:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 18:58:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 18:58:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 18:58:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 18:58:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 18:58:19,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 18:58:19,780 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 18:58:19,781 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 18:58:19,959 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 18:58:19,967 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 18:58:19,968 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 18:58:19,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:58:19 BoogieIcfgContainer [2022-07-12 18:58:19,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 18:58:19,974 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 18:58:19,974 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 18:58:19,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 18:58:19,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 06:58:18" (1/3) ... [2022-07-12 18:58:19,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e23c44e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:58:19, skipping insertion in model container [2022-07-12 18:58:19,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:58:19" (2/3) ... [2022-07-12 18:58:19,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e23c44e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:58:19, skipping insertion in model container [2022-07-12 18:58:19,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:58:19" (3/3) ... [2022-07-12 18:58:19,981 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test6_1.i [2022-07-12 18:58:19,999 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 18:58:20,000 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2022-07-12 18:58:20,059 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 18:58:20,073 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@54d1664b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7f9bc0a [2022-07-12 18:58:20,074 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-07-12 18:58:20,077 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) [2022-07-12 18:58:20,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-12 18:58:20,084 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:58:20,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:58:20,086 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)] === [2022-07-12 18:58:20,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:58:20,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1405574468, now seen corresponding path program 1 times [2022-07-12 18:58:20,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:58:20,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305858573] [2022-07-12 18:58:20,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:58:20,105 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:58:20,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:58:20,108 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) [2022-07-12 18:58:20,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 18:58:20,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:58:20,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 18:58:20,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:58:20,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 18:58:20,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 18:58:20,302 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:58:20,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305858573] [2022-07-12 18:58:20,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305858573] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 18:58:20,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 18:58:20,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 18:58:20,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202478182] [2022-07-12 18:58:20,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 18:58:20,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 18:58:20,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:58:20,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 18:58:20,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 18:58:20,343 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) [2022-07-12 18:58:20,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:58:20,427 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2022-07-12 18:58:20,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 18:58:20,430 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 [2022-07-12 18:58:20,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:58:20,437 INFO L225 Difference]: With dead ends: 80 [2022-07-12 18:58:20,437 INFO L226 Difference]: Without dead ends: 76 [2022-07-12 18:58:20,438 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 [2022-07-12 18:58:20,446 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, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 18:58:20,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 214 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 18:58:20,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-07-12 18:58:20,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 45. [2022-07-12 18:58:20,481 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) [2022-07-12 18:58:20,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2022-07-12 18:58:20,483 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 12 [2022-07-12 18:58:20,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:58:20,484 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2022-07-12 18:58:20,484 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) [2022-07-12 18:58:20,484 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2022-07-12 18:58:20,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-12 18:58:20,485 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:58:20,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:58:20,492 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-12 18:58:20,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:58:20,686 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)] === [2022-07-12 18:58:20,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:58:20,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1405608821, now seen corresponding path program 1 times [2022-07-12 18:58:20,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:58:20,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1162288558] [2022-07-12 18:58:20,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:58:20,688 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:58:20,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:58:20,689 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) [2022-07-12 18:58:20,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-12 18:58:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:58:20,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 18:58:20,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:58:20,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 18:58:20,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 18:58:20,769 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:58:20,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1162288558] [2022-07-12 18:58:20,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1162288558] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 18:58:20,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 18:58:20,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 18:58:20,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794007773] [2022-07-12 18:58:20,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 18:58:20,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 18:58:20,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:58:20,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 18:58:20,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 18:58:20,785 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) [2022-07-12 18:58:20,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:58:20,811 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2022-07-12 18:58:20,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 18:58:20,812 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 [2022-07-12 18:58:20,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:58:20,813 INFO L225 Difference]: With dead ends: 44 [2022-07-12 18:58:20,813 INFO L226 Difference]: Without dead ends: 44 [2022-07-12 18:58:20,813 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 [2022-07-12 18:58:20,814 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 [2022-07-12 18:58:20,815 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] [2022-07-12 18:58:20,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-07-12 18:58:20,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-07-12 18:58:20,819 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) [2022-07-12 18:58:20,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2022-07-12 18:58:20,820 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 12 [2022-07-12 18:58:20,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:58:20,820 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2022-07-12 18:58:20,820 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) [2022-07-12 18:58:20,821 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2022-07-12 18:58:20,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-12 18:58:20,821 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:58:20,821 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:58:20,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-12 18:58:21,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:58:21,030 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)] === [2022-07-12 18:58:21,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:58:21,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1146582493, now seen corresponding path program 1 times [2022-07-12 18:58:21,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:58:21,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277331862] [2022-07-12 18:58:21,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:58:21,032 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:58:21,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:58:21,035 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) [2022-07-12 18:58:21,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-12 18:58:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:58:21,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 18:58:21,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:58:21,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 18:58:21,236 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 18:58:21,236 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:58:21,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277331862] [2022-07-12 18:58:21,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1277331862] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 18:58:21,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 18:58:21,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 18:58:21,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857432261] [2022-07-12 18:58:21,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 18:58:21,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 18:58:21,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:58:21,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 18:58:21,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 18:58:21,239 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) [2022-07-12 18:58:21,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:58:21,334 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2022-07-12 18:58:21,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 18:58:21,335 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 [2022-07-12 18:58:21,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:58:21,336 INFO L225 Difference]: With dead ends: 60 [2022-07-12 18:58:21,336 INFO L226 Difference]: Without dead ends: 60 [2022-07-12 18:58:21,337 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 [2022-07-12 18:58:21,338 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 [2022-07-12 18:58:21,338 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] [2022-07-12 18:58:21,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-07-12 18:58:21,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 47. [2022-07-12 18:58:21,343 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) [2022-07-12 18:58:21,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2022-07-12 18:58:21,345 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 12 [2022-07-12 18:58:21,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:58:21,345 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2022-07-12 18:58:21,345 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) [2022-07-12 18:58:21,346 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2022-07-12 18:58:21,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-12 18:58:21,346 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:58:21,347 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:58:21,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-12 18:58:21,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:58:21,556 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)] === [2022-07-12 18:58:21,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:58:21,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1146582492, now seen corresponding path program 1 times [2022-07-12 18:58:21,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:58:21,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898269696] [2022-07-12 18:58:21,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:58:21,557 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:58:21,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:58:21,558 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) [2022-07-12 18:58:21,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-12 18:58:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:58:21,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 18:58:21,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:58:21,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 18:58:21,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 18:58:21,698 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:58:21,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1898269696] [2022-07-12 18:58:21,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1898269696] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 18:58:21,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 18:58:21,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 18:58:21,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162200722] [2022-07-12 18:58:21,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 18:58:21,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 18:58:21,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:58:21,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 18:58:21,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 18:58:21,700 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) [2022-07-12 18:58:21,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:58:21,781 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2022-07-12 18:58:21,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 18:58:21,782 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 [2022-07-12 18:58:21,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:58:21,783 INFO L225 Difference]: With dead ends: 80 [2022-07-12 18:58:21,783 INFO L226 Difference]: Without dead ends: 80 [2022-07-12 18:58:21,783 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 [2022-07-12 18:58:21,784 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 [2022-07-12 18:58:21,784 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] [2022-07-12 18:58:21,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-07-12 18:58:21,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 67. [2022-07-12 18:58:21,790 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) [2022-07-12 18:58:21,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2022-07-12 18:58:21,791 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 12 [2022-07-12 18:58:21,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:58:21,791 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2022-07-12 18:58:21,792 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) [2022-07-12 18:58:21,792 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2022-07-12 18:58:21,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-12 18:58:21,792 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:58:21,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:58:21,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-12 18:58:22,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:58:22,001 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)] === [2022-07-12 18:58:22,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:58:22,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1146582909, now seen corresponding path program 1 times [2022-07-12 18:58:22,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:58:22,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1881874174] [2022-07-12 18:58:22,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:58:22,003 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:58:22,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:58:22,004 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) [2022-07-12 18:58:22,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-12 18:58:22,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:58:22,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 18:58:22,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:58:22,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 18:58:22,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 18:58:22,083 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:58:22,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1881874174] [2022-07-12 18:58:22,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1881874174] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 18:58:22,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 18:58:22,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 18:58:22,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303521156] [2022-07-12 18:58:22,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 18:58:22,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 18:58:22,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:58:22,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 18:58:22,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 18:58:22,086 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) [2022-07-12 18:58:22,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:58:22,124 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2022-07-12 18:58:22,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 18:58:22,125 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 [2022-07-12 18:58:22,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:58:22,126 INFO L225 Difference]: With dead ends: 73 [2022-07-12 18:58:22,126 INFO L226 Difference]: Without dead ends: 73 [2022-07-12 18:58:22,127 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 [2022-07-12 18:58:22,130 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 [2022-07-12 18:58:22,134 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] [2022-07-12 18:58:22,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-07-12 18:58:22,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2022-07-12 18:58:22,149 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) [2022-07-12 18:58:22,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2022-07-12 18:58:22,152 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 12 [2022-07-12 18:58:22,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:58:22,153 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2022-07-12 18:58:22,153 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) [2022-07-12 18:58:22,153 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2022-07-12 18:58:22,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-12 18:58:22,154 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:58:22,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:58:22,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-12 18:58:22,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:58:22,367 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)] === [2022-07-12 18:58:22,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:58:22,367 INFO L85 PathProgramCache]: Analyzing trace with hash 624200559, now seen corresponding path program 1 times [2022-07-12 18:58:22,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:58:22,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741972191] [2022-07-12 18:58:22,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:58:22,369 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:58:22,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:58:22,370 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) [2022-07-12 18:58:22,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-12 18:58:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:58:22,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 18:58:22,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:58:22,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 18:58:22,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 18:58:22,512 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:58:22,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741972191] [2022-07-12 18:58:22,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741972191] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 18:58:22,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 18:58:22,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 18:58:22,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206683040] [2022-07-12 18:58:22,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 18:58:22,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 18:58:22,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:58:22,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 18:58:22,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-12 18:58:22,515 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) [2022-07-12 18:58:22,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:58:22,590 INFO L93 Difference]: Finished difference Result 81 states and 90 transitions. [2022-07-12 18:58:22,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 18:58:22,590 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 [2022-07-12 18:58:22,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:58:22,591 INFO L225 Difference]: With dead ends: 81 [2022-07-12 18:58:22,591 INFO L226 Difference]: Without dead ends: 81 [2022-07-12 18:58:22,591 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 [2022-07-12 18:58:22,592 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 97 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-07-12 18:58:22,592 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] [2022-07-12 18:58:22,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-07-12 18:58:22,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 69. [2022-07-12 18:58:22,596 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) [2022-07-12 18:58:22,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 88 transitions. [2022-07-12 18:58:22,596 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 88 transitions. Word has length 13 [2022-07-12 18:58:22,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:58:22,597 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 88 transitions. [2022-07-12 18:58:22,597 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) [2022-07-12 18:58:22,597 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 88 transitions. [2022-07-12 18:58:22,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-12 18:58:22,597 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:58:22,597 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:58:22,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-12 18:58:22,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:58:22,798 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)] === [2022-07-12 18:58:22,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:58:22,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1183253904, now seen corresponding path program 1 times [2022-07-12 18:58:22,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:58:22,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601348927] [2022-07-12 18:58:22,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:58:22,799 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:58:22,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:58:22,801 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) [2022-07-12 18:58:22,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-12 18:58:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:58:22,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 18:58:22,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:58:22,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 18:58:22,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 18:58:22,892 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:58:22,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601348927] [2022-07-12 18:58:22,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601348927] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 18:58:22,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 18:58:22,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 18:58:22,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416671] [2022-07-12 18:58:22,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 18:58:22,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 18:58:22,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:58:22,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 18:58:22,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 18:58:22,894 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) [2022-07-12 18:58:22,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:58:22,917 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2022-07-12 18:58:22,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 18:58:22,918 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 [2022-07-12 18:58:22,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:58:22,919 INFO L225 Difference]: With dead ends: 52 [2022-07-12 18:58:22,919 INFO L226 Difference]: Without dead ends: 52 [2022-07-12 18:58:22,919 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 [2022-07-12 18:58:22,920 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 [2022-07-12 18:58:22,920 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] [2022-07-12 18:58:22,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-07-12 18:58:22,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2022-07-12 18:58:22,923 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) [2022-07-12 18:58:22,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2022-07-12 18:58:22,924 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 13 [2022-07-12 18:58:22,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:58:22,924 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2022-07-12 18:58:22,924 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) [2022-07-12 18:58:22,925 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2022-07-12 18:58:22,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-12 18:58:22,925 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:58:22,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:58:22,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-12 18:58:23,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:58:23,134 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)] === [2022-07-12 18:58:23,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:58:23,135 INFO L85 PathProgramCache]: Analyzing trace with hash -2124619081, now seen corresponding path program 1 times [2022-07-12 18:58:23,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:58:23,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [644032047] [2022-07-12 18:58:23,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:58:23,135 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:58:23,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:58:23,140 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) [2022-07-12 18:58:23,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-12 18:58:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:58:23,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 18:58:23,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:58:23,203 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 [2022-07-12 18:58:23,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 18:58:23,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 18:58:23,230 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:58:23,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [644032047] [2022-07-12 18:58:23,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [644032047] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 18:58:23,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 18:58:23,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 18:58:23,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555602645] [2022-07-12 18:58:23,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 18:58:23,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 18:58:23,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:58:23,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 18:58:23,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 18:58:23,232 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) [2022-07-12 18:58:23,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:58:23,316 INFO L93 Difference]: Finished difference Result 61 states and 64 transitions. [2022-07-12 18:58:23,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 18:58:23,317 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 [2022-07-12 18:58:23,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:58:23,318 INFO L225 Difference]: With dead ends: 61 [2022-07-12 18:58:23,318 INFO L226 Difference]: Without dead ends: 61 [2022-07-12 18:58:23,318 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 [2022-07-12 18:58:23,319 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 [2022-07-12 18:58:23,319 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] [2022-07-12 18:58:23,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-07-12 18:58:23,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 48. [2022-07-12 18:58:23,322 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) [2022-07-12 18:58:23,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2022-07-12 18:58:23,322 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 14 [2022-07-12 18:58:23,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:58:23,323 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2022-07-12 18:58:23,323 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) [2022-07-12 18:58:23,323 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2022-07-12 18:58:23,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-12 18:58:23,324 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:58:23,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:58:23,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-12 18:58:23,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:58:23,532 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)] === [2022-07-12 18:58:23,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:58:23,532 INFO L85 PathProgramCache]: Analyzing trace with hash -2124571317, now seen corresponding path program 1 times [2022-07-12 18:58:23,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:58:23,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032232161] [2022-07-12 18:58:23,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:58:23,533 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:58:23,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:58:23,534 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) [2022-07-12 18:58:23,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-12 18:58:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:58:23,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-12 18:58:23,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:58:25,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 18:58:25,735 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 [2022-07-12 18:58:25,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 18:58:25,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 18:58:25,804 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:58:25,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032232161] [2022-07-12 18:58:25,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032232161] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 18:58:25,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 18:58:25,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 18:58:25,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360582064] [2022-07-12 18:58:25,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 18:58:25,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 18:58:25,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:58:25,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 18:58:25,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=29, Unknown=1, NotChecked=0, Total=42 [2022-07-12 18:58:25,806 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) [2022-07-12 18:58:26,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:58:26,010 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2022-07-12 18:58:26,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 18:58:26,011 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 [2022-07-12 18:58:26,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:58:26,011 INFO L225 Difference]: With dead ends: 66 [2022-07-12 18:58:26,012 INFO L226 Difference]: Without dead ends: 66 [2022-07-12 18:58:26,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=25, Invalid=64, Unknown=1, NotChecked=0, Total=90 [2022-07-12 18:58:26,012 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 [2022-07-12 18:58:26,013 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] [2022-07-12 18:58:26,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-07-12 18:58:26,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 47. [2022-07-12 18:58:26,015 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) [2022-07-12 18:58:26,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2022-07-12 18:58:26,015 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 14 [2022-07-12 18:58:26,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:58:26,015 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2022-07-12 18:58:26,016 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) [2022-07-12 18:58:26,016 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2022-07-12 18:58:26,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-12 18:58:26,016 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:58:26,016 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:58:26,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-12 18:58:26,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:58:26,217 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)] === [2022-07-12 18:58:26,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:58:26,217 INFO L85 PathProgramCache]: Analyzing trace with hash -2124571318, now seen corresponding path program 1 times [2022-07-12 18:58:26,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:58:26,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180776143] [2022-07-12 18:58:26,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:58:26,218 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:58:26,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:58:26,219 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) [2022-07-12 18:58:26,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-12 18:58:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:58:26,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 18:58:26,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:58:26,350 INFO L356 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-07-12 18:58:26,351 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 [2022-07-12 18:58:26,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 18:58:26,392 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 18:58:26,392 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:58:26,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [180776143] [2022-07-12 18:58:26,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [180776143] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 18:58:26,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 18:58:26,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 18:58:26,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358770683] [2022-07-12 18:58:26,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 18:58:26,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 18:58:26,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:58:26,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 18:58:26,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 18:58:26,395 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) [2022-07-12 18:58:26,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:58:26,513 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2022-07-12 18:58:26,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 18:58:26,514 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 [2022-07-12 18:58:26,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:58:26,515 INFO L225 Difference]: With dead ends: 59 [2022-07-12 18:58:26,515 INFO L226 Difference]: Without dead ends: 59 [2022-07-12 18:58:26,515 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 [2022-07-12 18:58:26,516 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 [2022-07-12 18:58:26,516 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] [2022-07-12 18:58:26,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-07-12 18:58:26,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 46. [2022-07-12 18:58:26,518 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) [2022-07-12 18:58:26,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2022-07-12 18:58:26,519 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 14 [2022-07-12 18:58:26,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:58:26,519 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2022-07-12 18:58:26,519 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) [2022-07-12 18:58:26,519 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2022-07-12 18:58:26,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-12 18:58:26,519 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:58:26,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:58:26,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-12 18:58:26,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:58:26,720 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)] === [2022-07-12 18:58:26,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:58:26,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1940820388, now seen corresponding path program 1 times [2022-07-12 18:58:26,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:58:26,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [241068447] [2022-07-12 18:58:26,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:58:26,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:58:26,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:58:26,723 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) [2022-07-12 18:58:26,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-12 18:58:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:58:26,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 18:58:26,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:58:26,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 18:58:26,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 18:58:26,794 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:58:26,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [241068447] [2022-07-12 18:58:26,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [241068447] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 18:58:26,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 18:58:26,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 18:58:26,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265318377] [2022-07-12 18:58:26,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 18:58:26,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 18:58:26,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:58:26,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 18:58:26,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 18:58:26,796 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) [2022-07-12 18:58:26,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:58:26,847 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2022-07-12 18:58:26,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 18:58:26,848 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 [2022-07-12 18:58:26,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:58:26,848 INFO L225 Difference]: With dead ends: 48 [2022-07-12 18:58:26,848 INFO L226 Difference]: Without dead ends: 39 [2022-07-12 18:58:26,849 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 [2022-07-12 18:58:26,849 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 [2022-07-12 18:58:26,849 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] [2022-07-12 18:58:26,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-07-12 18:58:26,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-07-12 18:58:26,851 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) [2022-07-12 18:58:26,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-07-12 18:58:26,851 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 14 [2022-07-12 18:58:26,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:58:26,852 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-07-12 18:58:26,852 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) [2022-07-12 18:58:26,852 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-07-12 18:58:26,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-12 18:58:26,852 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:58:26,852 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:58:26,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-12 18:58:27,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:58:27,059 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)] === [2022-07-12 18:58:27,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:58:27,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1603618149, now seen corresponding path program 1 times [2022-07-12 18:58:27,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:58:27,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [850323046] [2022-07-12 18:58:27,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:58:27,060 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:58:27,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:58:27,062 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) [2022-07-12 18:58:27,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-12 18:58:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:58:27,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-12 18:58:27,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:58:29,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 18:58:29,255 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 [2022-07-12 18:58:29,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 18:58:29,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 18:58:29,325 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:58:29,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [850323046] [2022-07-12 18:58:29,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [850323046] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 18:58:29,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 18:58:29,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 18:58:29,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710699760] [2022-07-12 18:58:29,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 18:58:29,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 18:58:29,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:58:29,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 18:58:29,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=19, Unknown=1, NotChecked=0, Total=30 [2022-07-12 18:58:29,327 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) [2022-07-12 18:58:29,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:58:29,416 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2022-07-12 18:58:29,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 18:58:29,416 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 [2022-07-12 18:58:29,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:58:29,417 INFO L225 Difference]: With dead ends: 38 [2022-07-12 18:58:29,417 INFO L226 Difference]: Without dead ends: 38 [2022-07-12 18:58:29,417 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 [2022-07-12 18:58:29,417 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 25 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 18:58:29,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 89 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 11 Unchecked, 0.0s Time] [2022-07-12 18:58:29,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-07-12 18:58:29,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-07-12 18:58:29,419 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) [2022-07-12 18:58:29,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2022-07-12 18:58:29,420 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 16 [2022-07-12 18:58:29,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:58:29,420 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2022-07-12 18:58:29,420 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) [2022-07-12 18:58:29,420 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2022-07-12 18:58:29,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-12 18:58:29,420 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:58:29,420 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:58:29,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-12 18:58:29,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:58:29,621 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)] === [2022-07-12 18:58:29,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:58:29,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1603618566, now seen corresponding path program 1 times [2022-07-12 18:58:29,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:58:29,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1160107952] [2022-07-12 18:58:29,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:58:29,622 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:58:29,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:58:29,623 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) [2022-07-12 18:58:29,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-12 18:58:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:58:29,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 18:58:29,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:58:29,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 18:58:29,682 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 18:58:29,682 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:58:29,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1160107952] [2022-07-12 18:58:29,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1160107952] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 18:58:29,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 18:58:29,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 18:58:29,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217427911] [2022-07-12 18:58:29,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 18:58:29,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 18:58:29,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:58:29,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 18:58:29,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 18:58:29,683 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) [2022-07-12 18:58:29,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:58:29,702 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2022-07-12 18:58:29,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 18:58:29,703 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 [2022-07-12 18:58:29,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:58:29,703 INFO L225 Difference]: With dead ends: 44 [2022-07-12 18:58:29,704 INFO L226 Difference]: Without dead ends: 44 [2022-07-12 18:58:29,704 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 [2022-07-12 18:58:29,704 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 [2022-07-12 18:58:29,705 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] [2022-07-12 18:58:29,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-07-12 18:58:29,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2022-07-12 18:58:29,706 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) [2022-07-12 18:58:29,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2022-07-12 18:58:29,707 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 16 [2022-07-12 18:58:29,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:58:29,707 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2022-07-12 18:58:29,707 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) [2022-07-12 18:58:29,708 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2022-07-12 18:58:29,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-12 18:58:29,708 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:58:29,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:58:29,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-07-12 18:58:29,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:58:29,917 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)] === [2022-07-12 18:58:29,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:58:29,917 INFO L85 PathProgramCache]: Analyzing trace with hash 406071093, now seen corresponding path program 1 times [2022-07-12 18:58:29,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:58:29,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1725680976] [2022-07-12 18:58:29,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:58:29,918 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:58:29,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:58:29,919 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) [2022-07-12 18:58:29,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-12 18:58:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:58:29,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 18:58:29,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:58:30,073 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-12 18:58:30,073 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 [2022-07-12 18:58:30,170 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 [2022-07-12 18:58:30,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 18:58:30,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 18:58:30,189 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:58:30,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1725680976] [2022-07-12 18:58:30,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1725680976] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 18:58:30,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 18:58:30,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 18:58:30,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526640283] [2022-07-12 18:58:30,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 18:58:30,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 18:58:30,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:58:30,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 18:58:30,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 18:58:30,191 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) [2022-07-12 18:58:30,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:58:30,292 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2022-07-12 18:58:30,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 18:58:30,293 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 [2022-07-12 18:58:30,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:58:30,293 INFO L225 Difference]: With dead ends: 44 [2022-07-12 18:58:30,293 INFO L226 Difference]: Without dead ends: 44 [2022-07-12 18:58:30,294 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 [2022-07-12 18:58:30,294 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 [2022-07-12 18:58:30,294 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] [2022-07-12 18:58:30,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-07-12 18:58:30,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2022-07-12 18:58:30,296 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) [2022-07-12 18:58:30,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2022-07-12 18:58:30,296 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 17 [2022-07-12 18:58:30,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:58:30,296 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2022-07-12 18:58:30,296 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) [2022-07-12 18:58:30,296 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2022-07-12 18:58:30,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-12 18:58:30,297 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:58:30,297 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:58:30,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-12 18:58:30,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:58:30,505 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)] === [2022-07-12 18:58:30,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:58:30,506 INFO L85 PathProgramCache]: Analyzing trace with hash 406070677, now seen corresponding path program 1 times [2022-07-12 18:58:30,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:58:30,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90468359] [2022-07-12 18:58:30,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:58:30,506 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:58:30,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:58:30,508 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) [2022-07-12 18:58:30,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-12 18:58:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:58:30,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 18:58:30,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:58:30,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 18:58:30,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 18:58:30,580 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:58:30,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90468359] [2022-07-12 18:58:30,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90468359] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 18:58:30,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 18:58:30,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 18:58:30,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591027209] [2022-07-12 18:58:30,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 18:58:30,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 18:58:30,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:58:30,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 18:58:30,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 18:58:30,582 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) [2022-07-12 18:58:30,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:58:30,618 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2022-07-12 18:58:30,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 18:58:30,619 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 [2022-07-12 18:58:30,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:58:30,619 INFO L225 Difference]: With dead ends: 44 [2022-07-12 18:58:30,619 INFO L226 Difference]: Without dead ends: 44 [2022-07-12 18:58:30,619 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 [2022-07-12 18:58:30,620 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 [2022-07-12 18:58:30,620 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] [2022-07-12 18:58:30,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-07-12 18:58:30,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2022-07-12 18:58:30,621 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) [2022-07-12 18:58:30,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2022-07-12 18:58:30,622 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 17 [2022-07-12 18:58:30,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:58:30,622 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2022-07-12 18:58:30,622 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) [2022-07-12 18:58:30,622 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2022-07-12 18:58:30,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-12 18:58:30,623 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:58:30,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:58:30,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-12 18:58:30,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:58:30,829 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)] === [2022-07-12 18:58:30,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:58:30,830 INFO L85 PathProgramCache]: Analyzing trace with hash 816218203, now seen corresponding path program 1 times [2022-07-12 18:58:30,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:58:30,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204441995] [2022-07-12 18:58:30,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:58:30,830 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:58:30,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:58:30,831 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) [2022-07-12 18:58:30,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-12 18:58:30,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 18:58:30,883 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 18:58:30,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 18:58:30,925 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-12 18:58:30,925 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 18:58:30,927 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2022-07-12 18:58:30,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2022-07-12 18:58:30,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2022-07-12 18:58:30,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (9 of 13 remaining) [2022-07-12 18:58:30,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE (8 of 13 remaining) [2022-07-12 18:58:30,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (7 of 13 remaining) [2022-07-12 18:58:30,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2022-07-12 18:58:30,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2022-07-12 18:58:30,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE (4 of 13 remaining) [2022-07-12 18:58:30,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE (3 of 13 remaining) [2022-07-12 18:58:30,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE (2 of 13 remaining) [2022-07-12 18:58:30,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 13 remaining) [2022-07-12 18:58:30,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 13 remaining) [2022-07-12 18:58:30,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-12 18:58:31,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:58:31,136 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:58:31,139 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 18:58:31,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 06:58:31 BoogieIcfgContainer [2022-07-12 18:58:31,170 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 18:58:31,171 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 18:58:31,171 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 18:58:31,171 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 18:58:31,172 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:58:19" (3/4) ... [2022-07-12 18:58:31,174 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-12 18:58:31,175 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 18:58:31,175 INFO L158 Benchmark]: Toolchain (without parser) took 12397.35ms. Allocated memory was 58.7MB in the beginning and 88.1MB in the end (delta: 29.4MB). Free memory was 36.4MB in the beginning and 64.4MB in the end (delta: -28.0MB). Peak memory consumption was 1.2MB. Max. memory is 16.1GB. [2022-07-12 18:58:31,175 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 58.7MB. Free memory was 41.2MB in the beginning and 41.2MB in the end (delta: 51.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 18:58:31,176 INFO L158 Benchmark]: CACSL2BoogieTranslator took 648.94ms. Allocated memory was 58.7MB in the beginning and 73.4MB in the end (delta: 14.7MB). Free memory was 36.2MB in the beginning and 53.2MB in the end (delta: -17.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-07-12 18:58:31,176 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.47ms. Allocated memory is still 73.4MB. Free memory was 53.2MB in the beginning and 50.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 18:58:31,176 INFO L158 Benchmark]: Boogie Preprocessor took 49.95ms. Allocated memory is still 73.4MB. Free memory was 50.8MB in the beginning and 49.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 18:58:31,177 INFO L158 Benchmark]: RCFGBuilder took 420.81ms. Allocated memory is still 73.4MB. Free memory was 49.3MB in the beginning and 36.7MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-12 18:58:31,177 INFO L158 Benchmark]: TraceAbstraction took 11196.50ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 36.1MB in the beginning and 64.4MB in the end (delta: -28.3MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2022-07-12 18:58:31,177 INFO L158 Benchmark]: Witness Printer took 3.70ms. Allocated memory is still 88.1MB. Free memory is still 64.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 18:58:31,179 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 58.7MB. Free memory was 41.2MB in the beginning and 41.2MB in the end (delta: 51.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 648.94ms. Allocated memory was 58.7MB in the beginning and 73.4MB in the end (delta: 14.7MB). Free memory was 36.2MB in the beginning and 53.2MB in the end (delta: -17.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.47ms. Allocated memory is still 73.4MB. Free memory was 53.2MB in the beginning and 50.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.95ms. Allocated memory is still 73.4MB. Free memory was 50.8MB in the beginning and 49.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 420.81ms. Allocated memory is still 73.4MB. Free memory was 49.3MB in the beginning and 36.7MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 11196.50ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 36.1MB in the beginning and 64.4MB in the end (delta: -28.3MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. * Witness Printer took 3.70ms. Allocated memory is still 88.1MB. Free memory is still 64.4MB. 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: 11.1s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, 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, 0.7s 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 [2022-07-12 18:58:31,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample