./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/busybox-1.22.0/basename-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/busybox-1.22.0/basename-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-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 64bit --witnessprinter.graph.data.programhash c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 12:27:57,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 12:27:57,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 12:27:57,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 12:27:57,084 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 12:27:57,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 12:27:57,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 12:27:57,089 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 12:27:57,090 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 12:27:57,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 12:27:57,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 12:27:57,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 12:27:57,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 12:27:57,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 12:27:57,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 12:27:57,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 12:27:57,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 12:27:57,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 12:27:57,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 12:27:57,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 12:27:57,112 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 12:27:57,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 12:27:57,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 12:27:57,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 12:27:57,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 12:27:57,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 12:27:57,117 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 12:27:57,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 12:27:57,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 12:27:57,118 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 12:27:57,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 12:27:57,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 12:27:57,121 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 12:27:57,122 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 12:27:57,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 12:27:57,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 12:27:57,123 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 12:27:57,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 12:27:57,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 12:27:57,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 12:27:57,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 12:27:57,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 12:27:57,127 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2022-07-23 12:27:57,151 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 12:27:57,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 12:27:57,152 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 12:27:57,152 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 12:27:57,153 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 12:27:57,153 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 12:27:57,153 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 12:27:57,153 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 12:27:57,154 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 12:27:57,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 12:27:57,154 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 12:27:57,155 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 12:27:57,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 12:27:57,155 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-23 12:27:57,155 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-23 12:27:57,155 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-23 12:27:57,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 12:27:57,156 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-23 12:27:57,156 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 12:27:57,156 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 12:27:57,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 12:27:57,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 12:27:57,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 12:27:57,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 12:27:57,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 12:27:57,157 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 12:27:57,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 12:27:57,157 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 [2022-07-23 12:27:57,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 12:27:57,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 12:27:57,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 12:27:57,355 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 12:27:57,356 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 12:27:57,357 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/busybox-1.22.0/basename-2.i [2022-07-23 12:27:57,404 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85f72a68c/8f3281127a3a4058b65f63d32f078d6b/FLAG06e9671dc [2022-07-23 12:27:57,836 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 12:27:57,836 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2022-07-23 12:27:57,854 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85f72a68c/8f3281127a3a4058b65f63d32f078d6b/FLAG06e9671dc [2022-07-23 12:27:58,175 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85f72a68c/8f3281127a3a4058b65f63d32f078d6b [2022-07-23 12:27:58,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 12:27:58,178 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 12:27:58,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 12:27:58,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 12:27:58,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 12:27:58,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 12:27:58" (1/1) ... [2022-07-23 12:27:58,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f0619e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:27:58, skipping insertion in model container [2022-07-23 12:27:58,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 12:27:58" (1/1) ... [2022-07-23 12:27:58,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 12:27:58,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 12:27:58,598 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2022-07-23 12:27:58,636 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 12:27:58,648 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-07-23 12:27:58,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@14414f5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:27:58, skipping insertion in model container [2022-07-23 12:27:58,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 12:27:58,649 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-07-23 12:27:58,650 INFO L158 Benchmark]: Toolchain (without parser) took 471.87ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 51.2MB in the beginning and 65.8MB in the end (delta: -14.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-23 12:27:58,651 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 81.8MB. Free memory was 40.5MB in the beginning and 40.5MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 12:27:58,652 INFO L158 Benchmark]: CACSL2BoogieTranslator took 467.79ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 51.0MB in the beginning and 65.8MB in the end (delta: -14.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-23 12:27:58,653 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 81.8MB. Free memory was 40.5MB in the beginning and 40.5MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 467.79ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 51.0MB in the beginning and 65.8MB in the end (delta: -14.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1515]: 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/busybox-1.22.0/basename-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-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 64bit --witnessprinter.graph.data.programhash c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 12:28:00,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 12:28:00,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 12:28:00,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 12:28:00,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 12:28:00,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 12:28:00,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 12:28:00,246 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 12:28:00,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 12:28:00,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 12:28:00,253 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 12:28:00,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 12:28:00,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 12:28:00,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 12:28:00,257 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 12:28:00,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 12:28:00,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 12:28:00,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 12:28:00,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 12:28:00,269 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 12:28:00,270 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 12:28:00,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 12:28:00,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 12:28:00,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 12:28:00,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 12:28:00,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 12:28:00,277 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 12:28:00,277 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 12:28:00,278 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 12:28:00,278 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 12:28:00,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 12:28:00,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 12:28:00,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 12:28:00,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 12:28:00,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 12:28:00,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 12:28:00,282 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 12:28:00,283 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 12:28:00,283 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 12:28:00,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 12:28:00,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 12:28:00,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 12:28:00,285 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2022-07-23 12:28:00,317 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 12:28:00,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 12:28:00,318 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 12:28:00,318 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 12:28:00,318 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 12:28:00,319 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 12:28:00,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 12:28:00,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 12:28:00,320 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 12:28:00,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 12:28:00,321 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 12:28:00,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 12:28:00,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 12:28:00,321 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-23 12:28:00,321 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-23 12:28:00,321 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-23 12:28:00,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 12:28:00,322 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-23 12:28:00,322 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-23 12:28:00,322 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-23 12:28:00,322 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 12:28:00,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 12:28:00,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 12:28:00,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 12:28:00,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 12:28:00,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 12:28:00,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 12:28:00,323 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-23 12:28:00,324 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-23 12:28:00,324 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-23 12:28:00,324 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 [2022-07-23 12:28:00,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 12:28:00,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 12:28:00,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 12:28:00,602 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 12:28:00,603 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 12:28:00,604 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/busybox-1.22.0/basename-2.i [2022-07-23 12:28:00,664 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0104faf47/6b11b55d104a43cf90dd0061fe80276c/FLAG10e48c5d1 [2022-07-23 12:28:01,114 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 12:28:01,114 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2022-07-23 12:28:01,128 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0104faf47/6b11b55d104a43cf90dd0061fe80276c/FLAG10e48c5d1 [2022-07-23 12:28:01,639 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0104faf47/6b11b55d104a43cf90dd0061fe80276c [2022-07-23 12:28:01,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 12:28:01,642 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 12:28:01,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 12:28:01,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 12:28:01,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 12:28:01,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 12:28:01" (1/1) ... [2022-07-23 12:28:01,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cce904f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:28:01, skipping insertion in model container [2022-07-23 12:28:01,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 12:28:01" (1/1) ... [2022-07-23 12:28:01,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 12:28:01,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 12:28:02,203 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2022-07-23 12:28:02,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 12:28:02,271 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-23 12:28:02,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 12:28:02,309 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2022-07-23 12:28:02,342 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 12:28:02,349 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 12:28:02,387 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2022-07-23 12:28:02,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 12:28:02,485 INFO L208 MainTranslator]: Completed translation [2022-07-23 12:28:02,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:28:02 WrapperNode [2022-07-23 12:28:02,486 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 12:28:02,487 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 12:28:02,487 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 12:28:02,487 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 12:28:02,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:28:02" (1/1) ... [2022-07-23 12:28:02,513 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:28:02" (1/1) ... [2022-07-23 12:28:02,549 INFO L137 Inliner]: procedures = 353, calls = 114, calls flagged for inlining = 10, calls inlined = 9, statements flattened = 386 [2022-07-23 12:28:02,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 12:28:02,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 12:28:02,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 12:28:02,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 12:28:02,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:28:02" (1/1) ... [2022-07-23 12:28:02,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:28:02" (1/1) ... [2022-07-23 12:28:02,566 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:28:02" (1/1) ... [2022-07-23 12:28:02,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:28:02" (1/1) ... [2022-07-23 12:28:02,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:28:02" (1/1) ... [2022-07-23 12:28:02,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:28:02" (1/1) ... [2022-07-23 12:28:02,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:28:02" (1/1) ... [2022-07-23 12:28:02,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 12:28:02,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 12:28:02,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 12:28:02,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 12:28:02,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:28:02" (1/1) ... [2022-07-23 12:28:02,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 12:28:02,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 12:28:02,646 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-23 12:28:02,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-23 12:28:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-23 12:28:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-23 12:28:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-23 12:28:02,672 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-23 12:28:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-23 12:28:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-23 12:28:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-23 12:28:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-23 12:28:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-23 12:28:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-23 12:28:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-23 12:28:02,673 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2022-07-23 12:28:02,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 12:28:02,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-23 12:28:02,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 12:28:02,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 12:28:02,922 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 12:28:02,923 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 12:28:03,704 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 12:28:03,710 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 12:28:03,710 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-07-23 12:28:03,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 12:28:03 BoogieIcfgContainer [2022-07-23 12:28:03,712 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 12:28:03,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 12:28:03,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 12:28:03,715 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 12:28:03,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 12:28:01" (1/3) ... [2022-07-23 12:28:03,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76c71e45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 12:28:03, skipping insertion in model container [2022-07-23 12:28:03,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:28:02" (2/3) ... [2022-07-23 12:28:03,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76c71e45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 12:28:03, skipping insertion in model container [2022-07-23 12:28:03,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 12:28:03" (3/3) ... [2022-07-23 12:28:03,717 INFO L111 eAbstractionObserver]: Analyzing ICFG basename-2.i [2022-07-23 12:28:03,726 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 12:28:03,726 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 94 error locations. [2022-07-23 12:28:03,755 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 12:28:03,759 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@1625b60a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1080d711 [2022-07-23 12:28:03,759 INFO L358 AbstractCegarLoop]: Starting to check reachability of 94 error locations. [2022-07-23 12:28:03,762 INFO L276 IsEmpty]: Start isEmpty. Operand has 245 states, 147 states have (on average 1.945578231292517) internal successors, (286), 241 states have internal predecessors, (286), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 12:28:03,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-23 12:28:03,766 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:28:03,766 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-23 12:28:03,767 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-07-23 12:28:03,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:28:03,770 INFO L85 PathProgramCache]: Analyzing trace with hash 37801, now seen corresponding path program 1 times [2022-07-23 12:28:03,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:28:03,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502491525] [2022-07-23 12:28:03,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:28:03,779 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:28:03,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:28:03,781 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 12:28:03,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-23 12:28:03,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:28:03,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 12:28:03,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:28:03,985 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 12:28:03,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 12:28:03,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 12:28:03,996 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:28:03,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502491525] [2022-07-23 12:28:03,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502491525] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 12:28:03,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 12:28:03,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 12:28:03,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900025099] [2022-07-23 12:28:03,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 12:28:04,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 12:28:04,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:28:04,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 12:28:04,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 12:28:04,028 INFO L87 Difference]: Start difference. First operand has 245 states, 147 states have (on average 1.945578231292517) internal successors, (286), 241 states have internal predecessors, (286), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 12:28:04,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:28:04,361 INFO L93 Difference]: Finished difference Result 253 states and 287 transitions. [2022-07-23 12:28:04,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 12:28:04,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-07-23 12:28:04,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:28:04,370 INFO L225 Difference]: With dead ends: 253 [2022-07-23 12:28:04,370 INFO L226 Difference]: Without dead ends: 251 [2022-07-23 12:28:04,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 12:28:04,373 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 241 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 12:28:04,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 207 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 12:28:04,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-07-23 12:28:04,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 235. [2022-07-23 12:28:04,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 142 states have (on average 1.8591549295774648) internal successors, (264), 231 states have internal predecessors, (264), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 12:28:04,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 268 transitions. [2022-07-23 12:28:04,439 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 268 transitions. Word has length 3 [2022-07-23 12:28:04,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:28:04,439 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 268 transitions. [2022-07-23 12:28:04,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 12:28:04,440 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 268 transitions. [2022-07-23 12:28:04,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-23 12:28:04,440 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:28:04,440 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-23 12:28:04,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-23 12:28:04,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:28:04,651 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-07-23 12:28:04,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:28:04,652 INFO L85 PathProgramCache]: Analyzing trace with hash 37802, now seen corresponding path program 1 times [2022-07-23 12:28:04,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:28:04,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [978976543] [2022-07-23 12:28:04,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:28:04,653 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:28:04,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:28:04,654 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 12:28:04,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-23 12:28:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:28:04,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 12:28:04,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:28:04,748 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 12:28:04,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 12:28:04,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 12:28:04,756 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:28:04,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [978976543] [2022-07-23 12:28:04,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [978976543] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 12:28:04,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 12:28:04,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 12:28:04,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310664588] [2022-07-23 12:28:04,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 12:28:04,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 12:28:04,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:28:04,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 12:28:04,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 12:28:04,759 INFO L87 Difference]: Start difference. First operand 235 states and 268 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 12:28:05,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:28:05,256 INFO L93 Difference]: Finished difference Result 234 states and 267 transitions. [2022-07-23 12:28:05,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 12:28:05,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-07-23 12:28:05,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:28:05,258 INFO L225 Difference]: With dead ends: 234 [2022-07-23 12:28:05,258 INFO L226 Difference]: Without dead ends: 234 [2022-07-23 12:28:05,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 12:28:05,259 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 13 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-23 12:28:05,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 430 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-23 12:28:05,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-07-23 12:28:05,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2022-07-23 12:28:05,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 142 states have (on average 1.852112676056338) internal successors, (263), 230 states have internal predecessors, (263), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 12:28:05,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 267 transitions. [2022-07-23 12:28:05,273 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 267 transitions. Word has length 3 [2022-07-23 12:28:05,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:28:05,273 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 267 transitions. [2022-07-23 12:28:05,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 12:28:05,273 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 267 transitions. [2022-07-23 12:28:05,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-23 12:28:05,274 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:28:05,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-23 12:28:05,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-23 12:28:05,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:28:05,482 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-07-23 12:28:05,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:28:05,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1126113961, now seen corresponding path program 1 times [2022-07-23 12:28:05,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:28:05,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881838897] [2022-07-23 12:28:05,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:28:05,484 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:28:05,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:28:05,485 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 12:28:05,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-23 12:28:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:28:05,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 12:28:05,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:28:05,598 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 12:28:05,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 12:28:05,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 12:28:05,647 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:28:05,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881838897] [2022-07-23 12:28:05,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [881838897] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 12:28:05,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 12:28:05,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 12:28:05,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426936888] [2022-07-23 12:28:05,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 12:28:05,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 12:28:05,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:28:05,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 12:28:05,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-23 12:28:05,649 INFO L87 Difference]: Start difference. First operand 234 states and 267 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 12:28:06,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:28:06,244 INFO L93 Difference]: Finished difference Result 238 states and 271 transitions. [2022-07-23 12:28:06,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 12:28:06,245 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-07-23 12:28:06,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:28:06,246 INFO L225 Difference]: With dead ends: 238 [2022-07-23 12:28:06,246 INFO L226 Difference]: Without dead ends: 238 [2022-07-23 12:28:06,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-23 12:28:06,248 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 17 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-23 12:28:06,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 431 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-23 12:28:06,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-07-23 12:28:06,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 236. [2022-07-23 12:28:06,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 144 states have (on average 1.8402777777777777) internal successors, (265), 232 states have internal predecessors, (265), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 12:28:06,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 269 transitions. [2022-07-23 12:28:06,262 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 269 transitions. Word has length 6 [2022-07-23 12:28:06,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:28:06,262 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 269 transitions. [2022-07-23 12:28:06,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 12:28:06,262 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 269 transitions. [2022-07-23 12:28:06,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-23 12:28:06,263 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:28:06,263 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 12:28:06,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-23 12:28:06,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:28:06,475 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-07-23 12:28:06,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:28:06,475 INFO L85 PathProgramCache]: Analyzing trace with hash -2080656212, now seen corresponding path program 1 times [2022-07-23 12:28:06,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:28:06,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870737864] [2022-07-23 12:28:06,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:28:06,477 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:28:06,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:28:06,484 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 12:28:06,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-23 12:28:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:28:06,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-23 12:28:06,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:28:06,582 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 12:28:06,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 12:28:06,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 12:28:07,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 12:28:07,631 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:28:07,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870737864] [2022-07-23 12:28:07,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [870737864] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 12:28:07,631 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 12:28:07,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-07-23 12:28:07,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887005503] [2022-07-23 12:28:07,631 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 12:28:07,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 12:28:07,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:28:07,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 12:28:07,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-23 12:28:07,632 INFO L87 Difference]: Start difference. First operand 236 states and 269 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 12:28:10,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:28:10,845 INFO L93 Difference]: Finished difference Result 242 states and 275 transitions. [2022-07-23 12:28:10,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 12:28:10,846 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-23 12:28:10,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:28:10,847 INFO L225 Difference]: With dead ends: 242 [2022-07-23 12:28:10,847 INFO L226 Difference]: Without dead ends: 242 [2022-07-23 12:28:10,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-07-23 12:28:10,848 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 31 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-23 12:28:10,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1116 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-23 12:28:10,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-07-23 12:28:10,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2022-07-23 12:28:10,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 151 states have (on average 1.794701986754967) internal successors, (271), 238 states have internal predecessors, (271), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 12:28:10,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 275 transitions. [2022-07-23 12:28:10,854 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 275 transitions. Word has length 10 [2022-07-23 12:28:10,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:28:10,855 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 275 transitions. [2022-07-23 12:28:10,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 12:28:10,855 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 275 transitions. [2022-07-23 12:28:10,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-23 12:28:10,855 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:28:10,855 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 12:28:10,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-23 12:28:11,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:28:11,060 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-07-23 12:28:11,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:28:11,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1026813049, now seen corresponding path program 1 times [2022-07-23 12:28:11,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:28:11,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1919417717] [2022-07-23 12:28:11,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:28:11,061 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:28:11,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:28:11,063 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 12:28:11,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-23 12:28:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:28:11,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 12:28:11,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:28:11,244 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 12:28:11,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 12:28:11,321 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 12:28:11,322 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:28:11,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1919417717] [2022-07-23 12:28:11,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1919417717] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 12:28:11,322 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 12:28:11,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-07-23 12:28:11,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228365495] [2022-07-23 12:28:11,322 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 12:28:11,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-23 12:28:11,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:28:11,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-23 12:28:11,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-23 12:28:11,323 INFO L87 Difference]: Start difference. First operand 242 states and 275 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 12:28:11,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:28:11,517 INFO L93 Difference]: Finished difference Result 262 states and 295 transitions. [2022-07-23 12:28:11,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-23 12:28:11,517 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-23 12:28:11,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:28:11,518 INFO L225 Difference]: With dead ends: 262 [2022-07-23 12:28:11,518 INFO L226 Difference]: Without dead ends: 262 [2022-07-23 12:28:11,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-07-23 12:28:11,521 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 24 mSDsluCounter, 1569 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1835 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 12:28:11,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1835 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 12:28:11,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-07-23 12:28:11,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2022-07-23 12:28:11,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 171 states have (on average 1.7017543859649122) internal successors, (291), 258 states have internal predecessors, (291), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 12:28:11,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 295 transitions. [2022-07-23 12:28:11,529 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 295 transitions. Word has length 19 [2022-07-23 12:28:11,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:28:11,529 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 295 transitions. [2022-07-23 12:28:11,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 12:28:11,530 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 295 transitions. [2022-07-23 12:28:11,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-23 12:28:11,530 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:28:11,530 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 12:28:11,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-23 12:28:11,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:28:11,742 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-07-23 12:28:11,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:28:11,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1411098840, now seen corresponding path program 2 times [2022-07-23 12:28:11,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:28:11,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1076406362] [2022-07-23 12:28:11,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 12:28:11,744 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:28:11,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:28:11,745 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 12:28:11,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-23 12:28:11,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 12:28:11,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 12:28:11,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 12:28:11,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:28:11,896 INFO L356 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-07-23 12:28:11,896 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 [2022-07-23 12:28:12,028 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-07-23 12:28:12,029 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 12:28:12,029 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:28:12,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1076406362] [2022-07-23 12:28:12,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1076406362] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 12:28:12,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 12:28:12,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-23 12:28:12,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968246207] [2022-07-23 12:28:12,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 12:28:12,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 12:28:12,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:28:12,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 12:28:12,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 12:28:12,032 INFO L87 Difference]: Start difference. First operand 262 states and 295 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 12:28:12,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:28:12,302 INFO L93 Difference]: Finished difference Result 277 states and 311 transitions. [2022-07-23 12:28:12,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 12:28:12,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-07-23 12:28:12,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:28:12,303 INFO L225 Difference]: With dead ends: 277 [2022-07-23 12:28:12,303 INFO L226 Difference]: Without dead ends: 277 [2022-07-23 12:28:12,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 12:28:12,304 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 237 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 12:28:12,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 202 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 12:28:12,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-07-23 12:28:12,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 261. [2022-07-23 12:28:12,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 171 states have (on average 1.695906432748538) internal successors, (290), 257 states have internal predecessors, (290), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 12:28:12,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 294 transitions. [2022-07-23 12:28:12,310 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 294 transitions. Word has length 39 [2022-07-23 12:28:12,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:28:12,311 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 294 transitions. [2022-07-23 12:28:12,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 12:28:12,311 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 294 transitions. [2022-07-23 12:28:12,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-23 12:28:12,312 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:28:12,312 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 12:28:12,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-23 12:28:12,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:28:12,515 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-07-23 12:28:12,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:28:12,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1411098841, now seen corresponding path program 1 times [2022-07-23 12:28:12,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:28:12,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2007442703] [2022-07-23 12:28:12,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:28:12,516 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:28:12,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:28:12,518 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 12:28:12,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-23 12:28:12,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:28:12,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-23 12:28:12,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:28:12,752 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 12:28:12,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 12:28:12,955 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 12:28:12,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:28:12,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2007442703] [2022-07-23 12:28:12,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2007442703] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 12:28:12,956 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 12:28:12,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2022-07-23 12:28:12,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992479814] [2022-07-23 12:28:12,956 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 12:28:12,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-23 12:28:12,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:28:12,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-23 12:28:12,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2022-07-23 12:28:12,957 INFO L87 Difference]: Start difference. First operand 261 states and 294 transitions. Second operand has 20 states, 20 states have (on average 3.65) internal successors, (73), 20 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 12:28:13,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:28:13,312 INFO L93 Difference]: Finished difference Result 269 states and 302 transitions. [2022-07-23 12:28:13,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-23 12:28:13,313 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.65) internal successors, (73), 20 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-07-23 12:28:13,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:28:13,314 INFO L225 Difference]: With dead ends: 269 [2022-07-23 12:28:13,314 INFO L226 Difference]: Without dead ends: 269 [2022-07-23 12:28:13,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2022-07-23 12:28:13,315 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 30 mSDsluCounter, 3171 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3441 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 12:28:13,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3441 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 12:28:13,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-07-23 12:28:13,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2022-07-23 12:28:13,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 179 states have (on average 1.664804469273743) internal successors, (298), 265 states have internal predecessors, (298), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 12:28:13,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 302 transitions. [2022-07-23 12:28:13,327 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 302 transitions. Word has length 39 [2022-07-23 12:28:13,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:28:13,328 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 302 transitions. [2022-07-23 12:28:13,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.65) internal successors, (73), 20 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 12:28:13,328 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 302 transitions. [2022-07-23 12:28:13,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-23 12:28:13,330 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:28:13,330 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 12:28:13,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-23 12:28:13,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:28:13,541 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-07-23 12:28:13,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:28:13,541 INFO L85 PathProgramCache]: Analyzing trace with hash 233252627, now seen corresponding path program 2 times [2022-07-23 12:28:13,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:28:13,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985785251] [2022-07-23 12:28:13,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 12:28:13,542 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:28:13,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:28:13,543 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 12:28:13,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-23 12:28:13,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 12:28:13,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 12:28:13,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 12:28:13,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:28:13,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 12:28:13,701 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 [2022-07-23 12:28:13,936 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-07-23 12:28:13,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 12:28:13,936 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:28:13,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985785251] [2022-07-23 12:28:13,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1985785251] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 12:28:13,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 12:28:13,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 12:28:13,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311364181] [2022-07-23 12:28:13,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 12:28:13,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 12:28:13,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:28:13,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 12:28:13,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-23 12:28:13,937 INFO L87 Difference]: Start difference. First operand 269 states and 302 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 12:28:14,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:28:14,455 INFO L93 Difference]: Finished difference Result 284 states and 318 transitions. [2022-07-23 12:28:14,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 12:28:14,455 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-07-23 12:28:14,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:28:14,456 INFO L225 Difference]: With dead ends: 284 [2022-07-23 12:28:14,456 INFO L226 Difference]: Without dead ends: 284 [2022-07-23 12:28:14,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-23 12:28:14,457 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 275 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-23 12:28:14,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 158 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-23 12:28:14,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-07-23 12:28:14,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 268. [2022-07-23 12:28:14,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 179 states have (on average 1.6592178770949721) internal successors, (297), 264 states have internal predecessors, (297), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 12:28:14,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 301 transitions. [2022-07-23 12:28:14,464 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 301 transitions. Word has length 47 [2022-07-23 12:28:14,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:28:14,464 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 301 transitions. [2022-07-23 12:28:14,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 12:28:14,465 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 301 transitions. [2022-07-23 12:28:14,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-23 12:28:14,466 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:28:14,466 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 12:28:14,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-23 12:28:14,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:28:14,672 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-07-23 12:28:14,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:28:14,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1065773764, now seen corresponding path program 1 times [2022-07-23 12:28:14,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:28:14,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159049241] [2022-07-23 12:28:14,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:28:14,673 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:28:14,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:28:14,674 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 12:28:14,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-23 12:28:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:28:14,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 12:28:14,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:28:15,016 INFO L356 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-07-23 12:28:15,016 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 1 case distinctions, treesize of input 9 treesize of output 14 [2022-07-23 12:28:15,038 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-07-23 12:28:15,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 12:28:15,038 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:28:15,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [159049241] [2022-07-23 12:28:15,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [159049241] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 12:28:15,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 12:28:15,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 12:28:15,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089831038] [2022-07-23 12:28:15,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 12:28:15,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 12:28:15,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:28:15,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 12:28:15,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 12:28:15,039 INFO L87 Difference]: Start difference. First operand 268 states and 301 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 12:28:15,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:28:15,378 INFO L93 Difference]: Finished difference Result 279 states and 313 transitions. [2022-07-23 12:28:15,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 12:28:15,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2022-07-23 12:28:15,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:28:15,380 INFO L225 Difference]: With dead ends: 279 [2022-07-23 12:28:15,380 INFO L226 Difference]: Without dead ends: 279 [2022-07-23 12:28:15,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 12:28:15,382 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 222 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 12:28:15,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 211 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 12:28:15,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-07-23 12:28:15,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 263. [2022-07-23 12:28:15,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 179 states have (on average 1.6312849162011174) internal successors, (292), 259 states have internal predecessors, (292), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 12:28:15,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 296 transitions. [2022-07-23 12:28:15,386 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 296 transitions. Word has length 55 [2022-07-23 12:28:15,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:28:15,387 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 296 transitions. [2022-07-23 12:28:15,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 12:28:15,387 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 296 transitions. [2022-07-23 12:28:15,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-23 12:28:15,388 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:28:15,388 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 12:28:15,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-23 12:28:15,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:28:15,597 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-07-23 12:28:15,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:28:15,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1065773765, now seen corresponding path program 1 times [2022-07-23 12:28:15,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:28:15,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943336894] [2022-07-23 12:28:15,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:28:15,598 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:28:15,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:28:15,600 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 12:28:15,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-23 12:28:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:28:15,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-23 12:28:15,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:28:16,010 INFO L356 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2022-07-23 12:28:16,010 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 1 case distinctions, treesize of input 19 treesize of output 21 [2022-07-23 12:28:16,081 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-07-23 12:28:16,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 12:28:16,081 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:28:16,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1943336894] [2022-07-23 12:28:16,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1943336894] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 12:28:16,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 12:28:16,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 12:28:16,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862380747] [2022-07-23 12:28:16,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 12:28:16,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 12:28:16,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:28:16,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 12:28:16,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-23 12:28:16,082 INFO L87 Difference]: Start difference. First operand 263 states and 296 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 12:28:17,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:28:17,308 INFO L93 Difference]: Finished difference Result 443 states and 507 transitions. [2022-07-23 12:28:17,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 12:28:17,308 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2022-07-23 12:28:17,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:28:17,310 INFO L225 Difference]: With dead ends: 443 [2022-07-23 12:28:17,310 INFO L226 Difference]: Without dead ends: 443 [2022-07-23 12:28:17,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-23 12:28:17,310 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 642 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-23 12:28:17,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 778 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-23 12:28:17,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-07-23 12:28:17,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 367. [2022-07-23 12:28:17,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 283 states have (on average 1.7279151943462898) internal successors, (489), 362 states have internal predecessors, (489), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-23 12:28:17,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 495 transitions. [2022-07-23 12:28:17,316 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 495 transitions. Word has length 55 [2022-07-23 12:28:17,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:28:17,317 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 495 transitions. [2022-07-23 12:28:17,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 12:28:17,317 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 495 transitions. [2022-07-23 12:28:17,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-23 12:28:17,318 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:28:17,318 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 12:28:17,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-23 12:28:17,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:28:17,523 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-07-23 12:28:17,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:28:17,524 INFO L85 PathProgramCache]: Analyzing trace with hash 2067963466, now seen corresponding path program 1 times [2022-07-23 12:28:17,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:28:17,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453539180] [2022-07-23 12:28:17,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:28:17,525 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:28:17,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:28:17,526 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 12:28:17,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-23 12:28:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:28:17,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-23 12:28:17,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:28:18,005 INFO L356 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2022-07-23 12:28:18,005 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 1 case distinctions, treesize of input 19 treesize of output 21 [2022-07-23 12:28:18,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 12:28:18,291 INFO L356 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-07-23 12:28:18,292 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 36 [2022-07-23 12:28:18,308 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-23 12:28:18,308 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-23 12:28:18,424 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-07-23 12:28:18,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 12:28:18,424 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:28:18,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453539180] [2022-07-23 12:28:18,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453539180] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 12:28:18,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 12:28:18,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-23 12:28:18,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022678943] [2022-07-23 12:28:18,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 12:28:18,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-23 12:28:18,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:28:18,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-23 12:28:18,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-23 12:28:18,426 INFO L87 Difference]: Start difference. First operand 367 states and 495 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 12:28:18,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:28:18,523 INFO L93 Difference]: Finished difference Result 368 states and 496 transitions. [2022-07-23 12:28:18,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-23 12:28:18,528 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2022-07-23 12:28:18,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:28:18,529 INFO L225 Difference]: With dead ends: 368 [2022-07-23 12:28:18,529 INFO L226 Difference]: Without dead ends: 368 [2022-07-23 12:28:18,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-23 12:28:18,530 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 4 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 305 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 12:28:18,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1444 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 305 Unchecked, 0.0s Time] [2022-07-23 12:28:18,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-07-23 12:28:18,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2022-07-23 12:28:18,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 284 states have (on average 1.7253521126760563) internal successors, (490), 363 states have internal predecessors, (490), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-23 12:28:18,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 496 transitions. [2022-07-23 12:28:18,538 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 496 transitions. Word has length 58 [2022-07-23 12:28:18,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:28:18,538 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 496 transitions. [2022-07-23 12:28:18,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 12:28:18,538 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 496 transitions. [2022-07-23 12:28:18,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-23 12:28:18,543 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:28:18,543 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 12:28:18,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-23 12:28:18,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:28:18,755 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-07-23 12:28:18,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:28:18,756 INFO L85 PathProgramCache]: Analyzing trace with hash -317642580, now seen corresponding path program 1 times [2022-07-23 12:28:18,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:28:18,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [323654585] [2022-07-23 12:28:18,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:28:18,756 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:28:18,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:28:18,758 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 12:28:18,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-23 12:28:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:28:19,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 12:28:19,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:28:19,055 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-07-23 12:28:19,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 12:28:19,056 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:28:19,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [323654585] [2022-07-23 12:28:19,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [323654585] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 12:28:19,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 12:28:19,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-23 12:28:19,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599663295] [2022-07-23 12:28:19,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 12:28:19,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 12:28:19,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:28:19,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 12:28:19,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-23 12:28:19,057 INFO L87 Difference]: Start difference. First operand 368 states and 496 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 12:28:19,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:28:19,299 INFO L93 Difference]: Finished difference Result 286 states and 320 transitions. [2022-07-23 12:28:19,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 12:28:19,300 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 59 [2022-07-23 12:28:19,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:28:19,301 INFO L225 Difference]: With dead ends: 286 [2022-07-23 12:28:19,301 INFO L226 Difference]: Without dead ends: 286 [2022-07-23 12:28:19,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-23 12:28:19,302 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 263 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 12:28:19,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 952 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 12:28:19,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-07-23 12:28:19,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 264. [2022-07-23 12:28:19,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 181 states have (on average 1.6187845303867403) internal successors, (293), 260 states have internal predecessors, (293), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 12:28:19,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 297 transitions. [2022-07-23 12:28:19,309 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 297 transitions. Word has length 59 [2022-07-23 12:28:19,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:28:19,310 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 297 transitions. [2022-07-23 12:28:19,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 12:28:19,310 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 297 transitions. [2022-07-23 12:28:19,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-23 12:28:19,311 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:28:19,311 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 12:28:19,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-23 12:28:19,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:28:19,523 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-07-23 12:28:19,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:28:19,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1256967413, now seen corresponding path program 1 times [2022-07-23 12:28:19,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:28:19,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [443406494] [2022-07-23 12:28:19,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:28:19,525 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:28:19,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:28:19,526 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 12:28:19,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-23 12:28:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:28:19,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 12:28:19,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:28:19,821 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-07-23 12:28:19,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 12:28:19,821 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:28:19,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [443406494] [2022-07-23 12:28:19,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [443406494] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 12:28:19,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 12:28:19,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 12:28:19,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955486912] [2022-07-23 12:28:19,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 12:28:19,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 12:28:19,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:28:19,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 12:28:19,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-23 12:28:19,822 INFO L87 Difference]: Start difference. First operand 264 states and 297 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 12:28:20,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:28:20,408 INFO L93 Difference]: Finished difference Result 282 states and 316 transitions. [2022-07-23 12:28:20,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 12:28:20,409 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 60 [2022-07-23 12:28:20,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:28:20,410 INFO L225 Difference]: With dead ends: 282 [2022-07-23 12:28:20,410 INFO L226 Difference]: Without dead ends: 282 [2022-07-23 12:28:20,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-23 12:28:20,411 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 277 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-23 12:28:20,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 631 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-23 12:28:20,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-07-23 12:28:20,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 275. [2022-07-23 12:28:20,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 193 states have (on average 1.61139896373057) internal successors, (311), 271 states have internal predecessors, (311), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 12:28:20,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 315 transitions. [2022-07-23 12:28:20,415 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 315 transitions. Word has length 60 [2022-07-23 12:28:20,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:28:20,415 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 315 transitions. [2022-07-23 12:28:20,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 12:28:20,416 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 315 transitions. [2022-07-23 12:28:20,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-23 12:28:20,416 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:28:20,416 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 12:28:20,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-07-23 12:28:20,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:28:20,628 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-07-23 12:28:20,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:28:20,628 INFO L85 PathProgramCache]: Analyzing trace with hash -311284142, now seen corresponding path program 1 times [2022-07-23 12:28:20,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:28:20,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934287421] [2022-07-23 12:28:20,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:28:20,629 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:28:20,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:28:20,635 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 12:28:20,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-23 12:28:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:28:21,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-23 12:28:21,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:28:21,109 INFO L356 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2022-07-23 12:28:21,109 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 1 case distinctions, treesize of input 9 treesize of output 18 [2022-07-23 12:28:21,128 INFO L356 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-07-23 12:28:21,128 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 [2022-07-23 12:28:21,156 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-07-23 12:28:21,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 12:28:21,156 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:28:21,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934287421] [2022-07-23 12:28:21,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934287421] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 12:28:21,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 12:28:21,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 12:28:21,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746051] [2022-07-23 12:28:21,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 12:28:21,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 12:28:21,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:28:21,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 12:28:21,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-23 12:28:21,158 INFO L87 Difference]: Start difference. First operand 275 states and 315 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 12:28:21,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:28:21,555 INFO L93 Difference]: Finished difference Result 282 states and 322 transitions. [2022-07-23 12:28:21,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 12:28:21,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 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 61 [2022-07-23 12:28:21,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:28:21,556 INFO L225 Difference]: With dead ends: 282 [2022-07-23 12:28:21,556 INFO L226 Difference]: Without dead ends: 282 [2022-07-23 12:28:21,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-23 12:28:21,557 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 214 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 12:28:21,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 373 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-23 12:28:21,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-07-23 12:28:21,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 279. [2022-07-23 12:28:21,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 198 states have (on average 1.606060606060606) internal successors, (318), 275 states have internal predecessors, (318), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 12:28:21,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 322 transitions. [2022-07-23 12:28:21,561 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 322 transitions. Word has length 61 [2022-07-23 12:28:21,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:28:21,561 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 322 transitions. [2022-07-23 12:28:21,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 12:28:21,562 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 322 transitions. [2022-07-23 12:28:21,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-23 12:28:21,562 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:28:21,562 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 12:28:21,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-23 12:28:21,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:28:21,777 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-07-23 12:28:21,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:28:21,777 INFO L85 PathProgramCache]: Analyzing trace with hash -311284141, now seen corresponding path program 1 times [2022-07-23 12:28:21,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:28:21,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834523451] [2022-07-23 12:28:21,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:28:21,778 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:28:21,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:28:21,780 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 12:28:21,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-23 12:28:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:28:22,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-23 12:28:22,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:28:22,294 INFO L356 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-07-23 12:28:22,294 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 1 case distinctions, treesize of input 14 treesize of output 20 [2022-07-23 12:28:22,322 INFO L356 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2022-07-23 12:28:22,323 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 1 case distinctions, treesize of input 9 treesize of output 18 [2022-07-23 12:28:22,491 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-23 12:28:22,492 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-23 12:28:22,499 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 17 treesize of output 19 [2022-07-23 12:28:22,666 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-07-23 12:28:22,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 12:28:22,666 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:28:22,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [834523451] [2022-07-23 12:28:22,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [834523451] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 12:28:22,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 12:28:22,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-23 12:28:22,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626731318] [2022-07-23 12:28:22,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 12:28:22,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-23 12:28:22,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:28:22,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-23 12:28:22,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-23 12:28:22,668 INFO L87 Difference]: Start difference. First operand 279 states and 322 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 12:28:22,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:28:22,766 INFO L93 Difference]: Finished difference Result 279 states and 321 transitions. [2022-07-23 12:28:22,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-23 12:28:22,767 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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 61 [2022-07-23 12:28:22,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:28:22,768 INFO L225 Difference]: With dead ends: 279 [2022-07-23 12:28:22,768 INFO L226 Difference]: Without dead ends: 279 [2022-07-23 12:28:22,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-23 12:28:22,769 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 4 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 303 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 12:28:22,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1426 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 303 Unchecked, 0.0s Time] [2022-07-23 12:28:22,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-07-23 12:28:22,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2022-07-23 12:28:22,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 198 states have (on average 1.601010101010101) internal successors, (317), 275 states have internal predecessors, (317), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 12:28:22,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 321 transitions. [2022-07-23 12:28:22,773 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 321 transitions. Word has length 61 [2022-07-23 12:28:22,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:28:22,774 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 321 transitions. [2022-07-23 12:28:22,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 12:28:22,774 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 321 transitions. [2022-07-23 12:28:22,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-23 12:28:22,774 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:28:22,774 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 12:28:22,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-07-23 12:28:22,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:28:22,987 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-07-23 12:28:22,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:28:22,988 INFO L85 PathProgramCache]: Analyzing trace with hash -631451440, now seen corresponding path program 1 times [2022-07-23 12:28:22,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:28:22,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1148653725] [2022-07-23 12:28:22,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:28:22,988 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:28:22,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:28:22,989 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 12:28:22,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-23 12:28:23,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:28:23,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-23 12:28:23,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:28:23,495 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 12:28:23,513 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-07-23 12:28:23,598 INFO L356 Elim1Store]: treesize reduction 46, result has 20.7 percent of original size [2022-07-23 12:28:23,598 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 28 [2022-07-23 12:28:23,663 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 12 [2022-07-23 12:28:23,673 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-07-23 12:28:23,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 12:28:23,674 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:28:23,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1148653725] [2022-07-23 12:28:23,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1148653725] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 12:28:23,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 12:28:23,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-23 12:28:23,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016638102] [2022-07-23 12:28:23,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 12:28:23,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 12:28:23,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:28:23,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 12:28:23,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-23 12:28:23,675 INFO L87 Difference]: Start difference. First operand 279 states and 321 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 12:28:24,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:28:24,608 INFO L93 Difference]: Finished difference Result 277 states and 317 transitions. [2022-07-23 12:28:24,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-23 12:28:24,608 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2022-07-23 12:28:24,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:28:24,609 INFO L225 Difference]: With dead ends: 277 [2022-07-23 12:28:24,609 INFO L226 Difference]: Without dead ends: 277 [2022-07-23 12:28:24,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-23 12:28:24,610 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 232 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-23 12:28:24,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 1042 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-23 12:28:24,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-07-23 12:28:24,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2022-07-23 12:28:24,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 198 states have (on average 1.5808080808080809) internal successors, (313), 273 states have internal predecessors, (313), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 12:28:24,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 317 transitions. [2022-07-23 12:28:24,614 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 317 transitions. Word has length 64 [2022-07-23 12:28:24,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:28:24,615 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 317 transitions. [2022-07-23 12:28:24,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 12:28:24,615 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 317 transitions. [2022-07-23 12:28:24,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-23 12:28:24,615 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:28:24,615 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 12:28:24,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-23 12:28:24,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:28:24,827 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-07-23 12:28:24,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:28:24,828 INFO L85 PathProgramCache]: Analyzing trace with hash -631451439, now seen corresponding path program 1 times [2022-07-23 12:28:24,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:28:24,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315326765] [2022-07-23 12:28:24,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:28:24,829 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:28:24,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:28:24,830 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 12:28:24,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-23 12:28:25,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:28:25,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-23 12:28:25,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:28:25,369 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-23 12:28:25,383 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 12:28:25,405 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-07-23 12:28:25,416 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-07-23 12:28:25,469 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-07-23 12:28:25,476 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-07-23 12:28:25,521 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2022-07-23 12:28:25,525 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 9 [2022-07-23 12:28:25,540 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-07-23 12:28:25,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 12:28:25,540 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:28:25,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315326765] [2022-07-23 12:28:25,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315326765] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 12:28:25,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 12:28:25,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-23 12:28:25,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792778460] [2022-07-23 12:28:25,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 12:28:25,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 12:28:25,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:28:25,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 12:28:25,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-23 12:28:25,541 INFO L87 Difference]: Start difference. First operand 277 states and 317 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 12:28:26,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:28:26,500 INFO L93 Difference]: Finished difference Result 276 states and 315 transitions. [2022-07-23 12:28:26,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-23 12:28:26,500 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2022-07-23 12:28:26,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:28:26,501 INFO L225 Difference]: With dead ends: 276 [2022-07-23 12:28:26,501 INFO L226 Difference]: Without dead ends: 276 [2022-07-23 12:28:26,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-07-23 12:28:26,502 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 240 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-23 12:28:26,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 734 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-23 12:28:26,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-07-23 12:28:26,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2022-07-23 12:28:26,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 198 states have (on average 1.5707070707070707) internal successors, (311), 272 states have internal predecessors, (311), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 12:28:26,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 315 transitions. [2022-07-23 12:28:26,507 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 315 transitions. Word has length 64 [2022-07-23 12:28:26,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:28:26,508 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 315 transitions. [2022-07-23 12:28:26,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 12:28:26,508 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 315 transitions. [2022-07-23 12:28:26,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-23 12:28:26,508 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:28:26,509 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 12:28:26,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-23 12:28:26,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:28:26,709 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-07-23 12:28:26,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:28:26,710 INFO L85 PathProgramCache]: Analyzing trace with hash -889593477, now seen corresponding path program 1 times [2022-07-23 12:28:26,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:28:26,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [590381048] [2022-07-23 12:28:26,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:28:26,710 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:28:26,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:28:26,712 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 12:28:26,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-23 12:28:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:28:27,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-23 12:28:27,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:28:27,289 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-23 12:28:27,322 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-23 12:28:27,322 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 24 [2022-07-23 12:28:27,344 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-07-23 12:28:27,415 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 34 [2022-07-23 12:28:27,515 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 12:28:27,516 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 44 [2022-07-23 12:28:27,543 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 13 [2022-07-23 12:28:27,601 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-07-23 12:28:27,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 12:28:27,601 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:28:27,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [590381048] [2022-07-23 12:28:27,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [590381048] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 12:28:27,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 12:28:27,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-23 12:28:27,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575828462] [2022-07-23 12:28:27,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 12:28:27,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-23 12:28:27,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:28:27,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-23 12:28:27,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-23 12:28:27,603 INFO L87 Difference]: Start difference. First operand 276 states and 315 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 12:28:28,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:28:28,417 INFO L93 Difference]: Finished difference Result 297 states and 337 transitions. [2022-07-23 12:28:28,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-23 12:28:28,418 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 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 68 [2022-07-23 12:28:28,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:28:28,419 INFO L225 Difference]: With dead ends: 297 [2022-07-23 12:28:28,419 INFO L226 Difference]: Without dead ends: 297 [2022-07-23 12:28:28,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-07-23 12:28:28,419 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 493 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-23 12:28:28,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 649 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 282 Invalid, 0 Unknown, 107 Unchecked, 0.7s Time] [2022-07-23 12:28:28,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-07-23 12:28:28,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 285. [2022-07-23 12:28:28,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 207 states have (on average 1.5748792270531402) internal successors, (326), 281 states have internal predecessors, (326), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 12:28:28,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 330 transitions. [2022-07-23 12:28:28,423 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 330 transitions. Word has length 68 [2022-07-23 12:28:28,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:28:28,423 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 330 transitions. [2022-07-23 12:28:28,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 12:28:28,423 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 330 transitions. [2022-07-23 12:28:28,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-23 12:28:28,424 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:28:28,424 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 12:28:28,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-07-23 12:28:28,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:28:28,624 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-07-23 12:28:28,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:28:28,624 INFO L85 PathProgramCache]: Analyzing trace with hash -889593476, now seen corresponding path program 1 times [2022-07-23 12:28:28,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:28:28,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338557940] [2022-07-23 12:28:28,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:28:28,625 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:28:28,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:28:28,626 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 12:28:28,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-23 12:28:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:28:29,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-23 12:28:29,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:28:29,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-23 12:28:29,195 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 12:28:29,206 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-23 12:28:29,208 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-23 12:28:29,230 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-07-23 12:28:29,243 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-07-23 12:28:29,312 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 34 [2022-07-23 12:28:29,325 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-07-23 12:28:29,434 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 12:28:29,434 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 57 [2022-07-23 12:28:29,442 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-07-23 12:28:29,521 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 13 [2022-07-23 12:28:29,525 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2022-07-23 12:28:29,548 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-07-23 12:28:29,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 12:28:29,548 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:28:29,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338557940] [2022-07-23 12:28:29,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1338557940] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 12:28:29,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 12:28:29,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-23 12:28:29,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948471962] [2022-07-23 12:28:29,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 12:28:29,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-23 12:28:29,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:28:29,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-23 12:28:29,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-23 12:28:29,549 INFO L87 Difference]: Start difference. First operand 285 states and 330 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 12:28:31,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:28:31,218 INFO L93 Difference]: Finished difference Result 297 states and 334 transitions. [2022-07-23 12:28:31,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-23 12:28:31,219 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 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 68 [2022-07-23 12:28:31,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:28:31,220 INFO L225 Difference]: With dead ends: 297 [2022-07-23 12:28:31,220 INFO L226 Difference]: Without dead ends: 297 [2022-07-23 12:28:31,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-07-23 12:28:31,221 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 482 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-23 12:28:31,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 669 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-23 12:28:31,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-07-23 12:28:31,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 285. [2022-07-23 12:28:31,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 207 states have (on average 1.5555555555555556) internal successors, (322), 281 states have internal predecessors, (322), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 12:28:31,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 326 transitions. [2022-07-23 12:28:31,225 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 326 transitions. Word has length 68 [2022-07-23 12:28:31,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:28:31,225 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 326 transitions. [2022-07-23 12:28:31,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 12:28:31,225 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 326 transitions. [2022-07-23 12:28:31,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-23 12:28:31,226 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:28:31,226 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 12:28:31,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-07-23 12:28:31,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:28:31,447 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-07-23 12:28:31,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:28:31,448 INFO L85 PathProgramCache]: Analyzing trace with hash -269261804, now seen corresponding path program 1 times [2022-07-23 12:28:31,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:28:31,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271716550] [2022-07-23 12:28:31,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:28:31,449 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:28:31,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:28:31,450 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 12:28:31,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-23 12:28:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:28:32,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-23 12:28:32,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:28:32,126 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-23 12:28:32,158 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-23 12:28:32,159 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 24 [2022-07-23 12:28:32,181 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-07-23 12:28:32,240 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 34 [2022-07-23 12:28:32,335 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 12:28:32,336 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 44 [2022-07-23 12:28:32,414 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 12:28:32,414 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 44 [2022-07-23 12:28:32,446 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 13 [2022-07-23 12:28:32,507 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-07-23 12:28:32,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 12:28:32,702 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1548 (Array (_ BitVec 64) (_ BitVec 64)))) (= (select |c_#valid| (let ((.cse0 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0) v_ArrVal_1548) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0))) (_ bv1 1))) is different from false [2022-07-23 12:28:32,743 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1547 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1548 (Array (_ BitVec 64) (_ BitVec 64)))) (= (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem126#1.base| v_ArrVal_1547))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1548)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1))) is different from false [2022-07-23 12:28:32,760 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1547 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1548 (Array (_ BitVec 64) (_ BitVec 64)))) (= (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1547))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1548)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1))) is different from false [2022-07-23 12:28:32,783 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1547 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1546 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1548 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1546))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1547)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1548)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))))) is different from false [2022-07-23 12:28:32,807 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 12:28:32,808 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 76 [2022-07-23 12:28:32,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2665 treesize of output 1963 [2022-07-23 12:28:32,828 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1959 treesize of output 1644 [2022-07-23 12:28:32,857 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1644 treesize of output 1294 [2022-07-23 12:28:32,866 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1294 treesize of output 1266 [2022-07-23 12:28:36,842 INFO L356 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2022-07-23 12:28:36,842 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 29 [2022-07-23 12:28:36,851 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 190 trivial. 2 not checked. [2022-07-23 12:28:36,852 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 12:28:36,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271716550] [2022-07-23 12:28:36,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [271716550] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 12:28:36,852 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 12:28:36,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 18 [2022-07-23 12:28:36,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974792355] [2022-07-23 12:28:36,852 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 12:28:36,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-23 12:28:36,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 12:28:36,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-23 12:28:36,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=164, Unknown=7, NotChecked=116, Total=342 [2022-07-23 12:28:36,854 INFO L87 Difference]: Start difference. First operand 285 states and 326 transitions. Second operand has 19 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 19 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 12:28:38,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 12:28:38,325 INFO L93 Difference]: Finished difference Result 287 states and 326 transitions. [2022-07-23 12:28:38,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-23 12:28:38,326 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 19 states have internal predecessors, (53), 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 73 [2022-07-23 12:28:38,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 12:28:38,327 INFO L225 Difference]: With dead ends: 287 [2022-07-23 12:28:38,327 INFO L226 Difference]: Without dead ends: 287 [2022-07-23 12:28:38,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 127 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=74, Invalid=207, Unknown=7, NotChecked=132, Total=420 [2022-07-23 12:28:38,327 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 20 mSDsluCounter, 2076 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2318 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 802 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-23 12:28:38,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2318 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 306 Invalid, 0 Unknown, 802 Unchecked, 1.0s Time] [2022-07-23 12:28:38,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-07-23 12:28:38,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 285. [2022-07-23 12:28:38,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 207 states have (on average 1.5507246376811594) internal successors, (321), 281 states have internal predecessors, (321), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 12:28:38,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 325 transitions. [2022-07-23 12:28:38,333 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 325 transitions. Word has length 73 [2022-07-23 12:28:38,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 12:28:38,333 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 325 transitions. [2022-07-23 12:28:38,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 19 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 12:28:38,334 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 325 transitions. [2022-07-23 12:28:38,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-23 12:28:38,334 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 12:28:38,334 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 12:28:38,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-07-23 12:28:38,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 12:28:38,546 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-07-23 12:28:38,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 12:28:38,546 INFO L85 PathProgramCache]: Analyzing trace with hash -269261803, now seen corresponding path program 1 times [2022-07-23 12:28:38,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 12:28:38,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907531708] [2022-07-23 12:28:38,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 12:28:38,547 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 12:28:38,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 12:28:38,548 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 12:28:38,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-23 12:28:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 12:28:39,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-23 12:28:39,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 12:28:39,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-23 12:28:39,194 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 12:28:39,213 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-23 12:28:39,213 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-23 12:28:39,234 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-07-23 12:28:39,244 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-07-23 12:28:39,328 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 34 [2022-07-23 12:28:39,335 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-07-23 12:28:39,469 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 12:28:39,470 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 57 [2022-07-23 12:28:39,475 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-07-23 12:28:39,618 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 12:28:39,618 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 57 [2022-07-23 12:28:39,630 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-07-23 12:28:39,728 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 13 [2022-07-23 12:28:39,731 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2022-07-23 12:28:39,758 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-07-23 12:28:39,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 12:28:40,922 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1681 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1680 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (bvule (bvadd (_ bv1 64) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem128#1.base| v_ArrVal_1680) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0) ((_ sign_extend 32) (bvadd |c_ULTIMATE.start_main_~j~0#1| (_ bv1 32)))) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128#1.base| v_ArrVal_1681) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0))))) (forall ((v_ArrVal_1680 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem128#1.base| v_ArrVal_1680) |c_ULTIMATE.start_main_~argv~0#1.base|) (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (.cse2 ((_ sign_extend 32) (bvadd |c_ULTIMATE.start_main_~j~0#1| (_ bv1 32))))) (bvule (bvadd .cse1 .cse2) (bvadd (_ bv1 64) .cse1 .cse2))))) is different from false [2022-07-23 12:28:41,046 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1681 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1680 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (bvule (bvadd (_ bv1 64) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1680) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) ((_ sign_extend 32) (bvadd |c_ULTIMATE.start_main_~j~0#1| (_ bv1 32)))) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1681) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1)))))) (forall ((v_ArrVal_1680 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse2 (let ((.cse4 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4) v_ArrVal_1680) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4))) (.cse3 ((_ sign_extend 32) (bvadd |c_ULTIMATE.start_main_~j~0#1| (_ bv1 32))))) (bvule (bvadd .cse2 .cse3) (bvadd (_ bv1 64) .cse2 .cse3))))) is different from false [2022-07-23 12:28:41,177 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1681 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1680 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (bvule (bvadd ((_ sign_extend 32) (_ bv1 32)) (_ bv1 64) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1680) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1681) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1)))))) (forall ((v_ArrVal_1680 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse2 ((_ sign_extend 32) (_ bv1 32))) (.cse3 (let ((.cse4 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4) v_ArrVal_1680) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4)))) (bvule (bvadd .cse2 .cse3) (bvadd .cse2 (_ bv1 64) .cse3))))) is different from false [2022-07-23 12:28:41,258 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1679 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1678 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1681 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1680 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem126#1.base| v_ArrVal_1678)) (.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem126#1.base| v_ArrVal_1679) .cse0 v_ArrVal_1680) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) ((_ sign_extend 32) (_ bv1 32)) (_ bv1 64)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_1681) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1)))))) (forall ((v_ArrVal_1679 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1678 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1680 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse3 (let ((.cse5 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem126#1.base| v_ArrVal_1679) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem126#1.base| v_ArrVal_1678) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse5) v_ArrVal_1680) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse5))) (.cse4 ((_ sign_extend 32) (_ bv1 32)))) (bvule (bvadd .cse3 .cse4) (bvadd .cse3 .cse4 (_ bv1 64)))))) is different from false [2022-07-23 12:28:41,650 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1679 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1678 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1681 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1680 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse2 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1678))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1679) .cse1 v_ArrVal_1680) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2) ((_ sign_extend 32) (_ bv1 32)) (_ bv1 64)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_1681) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_1679 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1678 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1680 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse4 (let ((.cse7 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse6 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7))) (store (store |c_#memory_$Pointer$.offset| .cse6 v_ArrVal_1679) (select (select (store |c_#memory_$Pointer$.base| .cse6 v_ArrVal_1678) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7) v_ArrVal_1680)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7))) (.cse5 ((_ sign_extend 32) (_ bv1 32)))) (bvule (bvadd .cse4 .cse5) (bvadd .cse4 .cse5 (_ bv1 64)))))) is different from false [2022-07-23 12:28:41,858 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1679 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1678 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1677 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1676 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1680 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 ((_ sign_extend 32) (_ bv1 32))) (.cse1 (let ((.cse4 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1676))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1677) .cse2 v_ArrVal_1679) (select (select (store .cse3 .cse2 v_ArrVal_1678) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4) v_ArrVal_1680))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4)))) (bvule (bvadd .cse0 .cse1) (bvadd .cse0 .cse1 (_ bv1 64))))) (forall ((v_ArrVal_1679 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1678 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1677 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1676 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1681 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1680 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse9 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1676)) (.cse7 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse5 (select (select .cse9 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7))) (let ((.cse8 (store .cse9 .cse5 v_ArrVal_1678))) (let ((.cse6 (select (select .cse8 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7))) (bvule (bvadd ((_ sign_extend 32) (_ bv1 32)) (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1677) .cse5 v_ArrVal_1679) .cse6 v_ArrVal_1680) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7) (_ bv1 64)) (select |c_#length| (select (select (store .cse8 .cse6 v_ArrVal_1681) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7))))))))) is different from false [2022-07-23 12:28:41,935 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 12:28:41,935 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 227 treesize of output 228 [2022-07-23 12:28:41,958 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 12:28:41,958 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 214 treesize of output 137 [2022-07-23 12:28:41,970 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5607 treesize of output 4554 [2022-07-23 12:28:42,011 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92771 treesize of output 89882 [2022-07-23 12:28:42,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89878 treesize of output 81366 [2022-07-23 12:28:42,545 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81366 treesize of output 79126 [2022-07-23 12:28:42,717 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79126 treesize of output 70054 [2022-07-23 12:28:42,908 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70054 treesize of output 61542 [2022-07-23 12:28:43,081 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61542 treesize of output 50874 [2022-07-23 12:28:43,260 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50874 treesize of output 46842