./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/busybox-1.22.0/dirname-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b 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/dirname-1.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 90eaf2e76e590922119d90e478fc764e383193134f46d6fe59bc98f3ce7c6611 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 22:23:31,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 22:23:31,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 22:23:31,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 22:23:31,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 22:23:31,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 22:23:31,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 22:23:31,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 22:23:31,251 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 22:23:31,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 22:23:31,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 22:23:31,258 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 22:23:31,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 22:23:31,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 22:23:31,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 22:23:31,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 22:23:31,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 22:23:31,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 22:23:31,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 22:23:31,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 22:23:31,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 22:23:31,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 22:23:31,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 22:23:31,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 22:23:31,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 22:23:31,284 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 22:23:31,284 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 22:23:31,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 22:23:31,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 22:23:31,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 22:23:31,286 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 22:23:31,287 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 22:23:31,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 22:23:31,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 22:23:31,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 22:23:31,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 22:23:31,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 22:23:31,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 22:23:31,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 22:23:31,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 22:23:31,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 22:23:31,294 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2021-12-14 22:23:31,333 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 22:23:31,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 22:23:31,334 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 22:23:31,334 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 22:23:31,335 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 22:23:31,335 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 22:23:31,336 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 22:23:31,336 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 22:23:31,336 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 22:23:31,336 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 22:23:31,337 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 22:23:31,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 22:23:31,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 22:23:31,338 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-14 22:23:31,338 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-14 22:23:31,338 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-14 22:23:31,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 22:23:31,338 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-14 22:23:31,339 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 22:23:31,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 22:23:31,339 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 22:23:31,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 22:23:31,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 22:23:31,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 22:23:31,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 22:23:31,340 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 22:23:31,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 22:23:31,341 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 22:23:31,341 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90eaf2e76e590922119d90e478fc764e383193134f46d6fe59bc98f3ce7c6611 [2021-12-14 22:23:31,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 22:23:31,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 22:23:31,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 22:23:31,579 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 22:23:31,579 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 22:23:31,580 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/busybox-1.22.0/dirname-1.i [2021-12-14 22:23:31,636 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ec571c28/94d3f578fe7f4fcbb76f746ebfc4cefb/FLAG572d55447 [2021-12-14 22:23:32,104 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 22:23:32,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/dirname-1.i [2021-12-14 22:23:32,121 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ec571c28/94d3f578fe7f4fcbb76f746ebfc4cefb/FLAG572d55447 [2021-12-14 22:23:32,131 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ec571c28/94d3f578fe7f4fcbb76f746ebfc4cefb [2021-12-14 22:23:32,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 22:23:32,134 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 22:23:32,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 22:23:32,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 22:23:32,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 22:23:32,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:23:32" (1/1) ... [2021-12-14 22:23:32,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58ac1201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:23:32, skipping insertion in model container [2021-12-14 22:23:32,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:23:32" (1/1) ... [2021-12-14 22:23:32,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 22:23:32,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 22:23:32,683 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 22:23:32,705 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-12-14 22:23:32,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@55f486bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:23:32, skipping insertion in model container [2021-12-14 22:23:32,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 22:23:32,706 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-14 22:23:32,709 INFO L158 Benchmark]: Toolchain (without parser) took 573.75ms. Allocated memory is still 100.7MB. Free memory was 68.1MB in the beginning and 66.7MB in the end (delta: 1.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-14 22:23:32,711 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 100.7MB. Free memory was 57.6MB in the beginning and 57.5MB in the end (delta: 48.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 22:23:32,712 INFO L158 Benchmark]: CACSL2BoogieTranslator took 571.48ms. Allocated memory is still 100.7MB. Free memory was 67.9MB in the beginning and 66.7MB in the end (delta: 1.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-14 22:23:32,714 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 100.7MB. Free memory was 57.6MB in the beginning and 57.5MB in the end (delta: 48.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 571.48ms. Allocated memory is still 100.7MB. Free memory was 67.9MB in the beginning and 66.7MB in the end (delta: 1.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1162]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type 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/dirname-1.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 90eaf2e76e590922119d90e478fc764e383193134f46d6fe59bc98f3ce7c6611 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 22:23:34,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 22:23:34,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 22:23:34,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 22:23:34,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 22:23:34,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 22:23:34,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 22:23:34,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 22:23:34,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 22:23:34,487 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 22:23:34,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 22:23:34,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 22:23:34,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 22:23:34,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 22:23:34,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 22:23:34,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 22:23:34,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 22:23:34,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 22:23:34,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 22:23:34,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 22:23:34,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 22:23:34,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 22:23:34,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 22:23:34,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 22:23:34,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 22:23:34,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 22:23:34,528 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 22:23:34,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 22:23:34,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 22:23:34,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 22:23:34,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 22:23:34,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 22:23:34,533 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 22:23:34,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 22:23:34,535 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 22:23:34,535 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 22:23:34,536 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 22:23:34,536 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 22:23:34,536 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 22:23:34,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 22:23:34,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 22:23:34,539 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2021-12-14 22:23:34,571 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 22:23:34,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 22:23:34,572 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 22:23:34,573 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 22:23:34,573 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 22:23:34,574 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 22:23:34,574 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 22:23:34,575 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 22:23:34,575 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 22:23:34,575 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 22:23:34,576 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 22:23:34,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 22:23:34,576 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 22:23:34,576 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-14 22:23:34,577 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-14 22:23:34,577 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-14 22:23:34,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 22:23:34,577 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-14 22:23:34,577 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-14 22:23:34,578 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-14 22:23:34,578 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 22:23:34,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 22:23:34,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 22:23:34,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 22:23:34,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 22:23:34,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 22:23:34,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 22:23:34,579 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-14 22:23:34,579 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-14 22:23:34,580 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 22:23:34,580 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-14 22:23:34,580 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90eaf2e76e590922119d90e478fc764e383193134f46d6fe59bc98f3ce7c6611 [2021-12-14 22:23:34,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 22:23:34,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 22:23:34,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 22:23:34,888 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 22:23:34,888 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 22:23:34,890 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/busybox-1.22.0/dirname-1.i [2021-12-14 22:23:34,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee0bde692/c9209f25bbbe4573bffd50b088db6a38/FLAGcd29a7c3a [2021-12-14 22:23:35,495 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 22:23:35,496 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/dirname-1.i [2021-12-14 22:23:35,512 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee0bde692/c9209f25bbbe4573bffd50b088db6a38/FLAGcd29a7c3a [2021-12-14 22:23:35,760 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee0bde692/c9209f25bbbe4573bffd50b088db6a38 [2021-12-14 22:23:35,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 22:23:35,763 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 22:23:35,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 22:23:35,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 22:23:35,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 22:23:35,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:23:35" (1/1) ... [2021-12-14 22:23:35,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30f785c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:23:35, skipping insertion in model container [2021-12-14 22:23:35,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:23:35" (1/1) ... [2021-12-14 22:23:35,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 22:23:35,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 22:23:36,359 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 22:23:36,374 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-14 22:23:36,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 22:23:36,487 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 22:23:36,498 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 22:23:36,584 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 22:23:36,656 INFO L208 MainTranslator]: Completed translation [2021-12-14 22:23:36,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:23:36 WrapperNode [2021-12-14 22:23:36,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 22:23:36,659 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 22:23:36,659 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 22:23:36,659 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 22:23:36,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:23:36" (1/1) ... [2021-12-14 22:23:36,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:23:36" (1/1) ... [2021-12-14 22:23:36,747 INFO L137 Inliner]: procedures = 350, calls = 111, calls flagged for inlining = 8, calls inlined = 7, statements flattened = 265 [2021-12-14 22:23:36,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 22:23:36,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 22:23:36,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 22:23:36,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 22:23:36,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:23:36" (1/1) ... [2021-12-14 22:23:36,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:23:36" (1/1) ... [2021-12-14 22:23:36,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:23:36" (1/1) ... [2021-12-14 22:23:36,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:23:36" (1/1) ... [2021-12-14 22:23:36,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:23:36" (1/1) ... [2021-12-14 22:23:36,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:23:36" (1/1) ... [2021-12-14 22:23:36,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:23:36" (1/1) ... [2021-12-14 22:23:36,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 22:23:36,804 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 22:23:36,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 22:23:36,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 22:23:36,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:23:36" (1/1) ... [2021-12-14 22:23:36,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 22:23:36,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:23:36,844 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) [2021-12-14 22:23:36,852 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 [2021-12-14 22:23:36,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-14 22:23:36,877 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 22:23:36,878 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 22:23:36,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 22:23:36,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-14 22:23:36,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 22:23:36,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-14 22:23:36,878 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-14 22:23:36,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 22:23:36,878 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2021-12-14 22:23:36,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 22:23:36,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 22:23:36,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 22:23:36,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 22:23:36,992 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 22:23:36,993 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 22:23:37,756 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 22:23:37,762 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 22:23:37,762 INFO L301 CfgBuilder]: Removed 7 assume(true) statements. [2021-12-14 22:23:37,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:23:37 BoogieIcfgContainer [2021-12-14 22:23:37,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 22:23:37,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 22:23:37,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 22:23:37,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 22:23:37,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:23:35" (1/3) ... [2021-12-14 22:23:37,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d15aa25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:23:37, skipping insertion in model container [2021-12-14 22:23:37,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:23:36" (2/3) ... [2021-12-14 22:23:37,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d15aa25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:23:37, skipping insertion in model container [2021-12-14 22:23:37,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:23:37" (3/3) ... [2021-12-14 22:23:37,768 INFO L111 eAbstractionObserver]: Analyzing ICFG dirname-1.i [2021-12-14 22:23:37,772 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 22:23:37,772 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 73 error locations. [2021-12-14 22:23:37,804 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 22:23:37,810 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 22:23:37,810 INFO L340 AbstractCegarLoop]: Starting to check reachability of 73 error locations. [2021-12-14 22:23:37,824 INFO L276 IsEmpty]: Start isEmpty. Operand has 181 states, 105 states have (on average 1.9428571428571428) internal successors, (204), 178 states have internal predecessors, (204), 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) [2021-12-14 22:23:37,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-14 22:23:37,829 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:23:37,830 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-14 22:23:37,830 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-12-14 22:23:37,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:23:37,835 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-12-14 22:23:37,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:23:37,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134809615] [2021-12-14 22:23:37,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:23:37,848 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:23:37,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:23:37,855 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) [2021-12-14 22:23:37,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-14 22:23:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:23:37,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 22:23:37,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:23:38,063 INFO L388 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 [2021-12-14 22:23:38,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:23:38,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 22:23:38,080 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:23:38,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2134809615] [2021-12-14 22:23:38,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2134809615] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:23:38,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:23:38,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 22:23:38,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908664107] [2021-12-14 22:23:38,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:23:38,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 22:23:38,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:23:38,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 22:23:38,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 22:23:38,125 INFO L87 Difference]: Start difference. First operand has 181 states, 105 states have (on average 1.9428571428571428) internal successors, (204), 178 states have internal predecessors, (204), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand has 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) [2021-12-14 22:23:38,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:23:38,606 INFO L93 Difference]: Finished difference Result 189 states and 206 transitions. [2021-12-14 22:23:38,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 22:23:38,609 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 [2021-12-14 22:23:38,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:23:38,619 INFO L225 Difference]: With dead ends: 189 [2021-12-14 22:23:38,620 INFO L226 Difference]: Without dead ends: 187 [2021-12-14 22:23:38,621 INFO L932 BasicCegarLoop]: 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 [2021-12-14 22:23:38,625 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 162 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-14 22:23:38,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 146 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-14 22:23:38,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-12-14 22:23:38,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 171. [2021-12-14 22:23:38,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 100 states have (on average 1.85) internal successors, (185), 168 states have internal predecessors, (185), 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) [2021-12-14 22:23:38,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 187 transitions. [2021-12-14 22:23:38,681 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 187 transitions. Word has length 3 [2021-12-14 22:23:38,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:23:38,682 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 187 transitions. [2021-12-14 22:23:38,682 INFO L471 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) [2021-12-14 22:23:38,682 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 187 transitions. [2021-12-14 22:23:38,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-14 22:23:38,683 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:23:38,683 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-14 22:23:38,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-14 22:23:38,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:23:38,893 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-12-14 22:23:38,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:23:38,894 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-12-14 22:23:38,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:23:38,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324487529] [2021-12-14 22:23:38,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:23:38,895 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:23:38,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:23:38,897 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) [2021-12-14 22:23:38,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-14 22:23:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:23:38,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:23:38,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:23:38,998 INFO L388 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 [2021-12-14 22:23:39,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:23:39,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 22:23:39,012 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:23:39,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324487529] [2021-12-14 22:23:39,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [324487529] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:23:39,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:23:39,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 22:23:39,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872653257] [2021-12-14 22:23:39,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:23:39,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 22:23:39,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:23:39,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 22:23:39,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 22:23:39,019 INFO L87 Difference]: Start difference. First operand 171 states and 187 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) [2021-12-14 22:23:39,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:23:39,533 INFO L93 Difference]: Finished difference Result 170 states and 186 transitions. [2021-12-14 22:23:39,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 22:23:39,534 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 [2021-12-14 22:23:39,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:23:39,535 INFO L225 Difference]: With dead ends: 170 [2021-12-14 22:23:39,535 INFO L226 Difference]: Without dead ends: 170 [2021-12-14 22:23:39,536 INFO L932 BasicCegarLoop]: 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 [2021-12-14 22:23:39,537 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 9 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-14 22:23:39,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 292 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-14 22:23:39,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-12-14 22:23:39,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-12-14 22:23:39,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 100 states have (on average 1.84) internal successors, (184), 167 states have internal predecessors, (184), 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) [2021-12-14 22:23:39,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 186 transitions. [2021-12-14 22:23:39,546 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 186 transitions. Word has length 3 [2021-12-14 22:23:39,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:23:39,546 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 186 transitions. [2021-12-14 22:23:39,546 INFO L471 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) [2021-12-14 22:23:39,546 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 186 transitions. [2021-12-14 22:23:39,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-14 22:23:39,547 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:23:39,547 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-14 22:23:39,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-14 22:23:39,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:23:39,756 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-12-14 22:23:39,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:23:39,757 INFO L85 PathProgramCache]: Analyzing trace with hash 889446313, now seen corresponding path program 1 times [2021-12-14 22:23:39,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:23:39,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [118311806] [2021-12-14 22:23:39,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:23:39,757 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:23:39,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:23:39,758 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) [2021-12-14 22:23:39,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-14 22:23:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:23:39,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 22:23:39,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:23:39,853 INFO L388 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 [2021-12-14 22:23:39,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:23:39,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 22:23:39,909 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:23:39,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [118311806] [2021-12-14 22:23:39,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [118311806] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:23:39,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:23:39,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 22:23:39,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215147174] [2021-12-14 22:23:39,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:23:39,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 22:23:39,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:23:39,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 22:23:39,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-14 22:23:39,911 INFO L87 Difference]: Start difference. First operand 170 states and 186 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) [2021-12-14 22:23:40,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:23:40,370 INFO L93 Difference]: Finished difference Result 174 states and 190 transitions. [2021-12-14 22:23:40,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 22:23:40,371 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 [2021-12-14 22:23:40,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:23:40,372 INFO L225 Difference]: With dead ends: 174 [2021-12-14 22:23:40,372 INFO L226 Difference]: Without dead ends: 174 [2021-12-14 22:23:40,372 INFO L932 BasicCegarLoop]: 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 [2021-12-14 22:23:40,373 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 13 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-14 22:23:40,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 291 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-14 22:23:40,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-12-14 22:23:40,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 172. [2021-12-14 22:23:40,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 102 states have (on average 1.8235294117647058) internal successors, (186), 169 states have internal predecessors, (186), 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) [2021-12-14 22:23:40,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 188 transitions. [2021-12-14 22:23:40,382 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 188 transitions. Word has length 6 [2021-12-14 22:23:40,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:23:40,382 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 188 transitions. [2021-12-14 22:23:40,382 INFO L471 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) [2021-12-14 22:23:40,383 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 188 transitions. [2021-12-14 22:23:40,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-14 22:23:40,383 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:23:40,383 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 22:23:40,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-14 22:23:40,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:23:40,591 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-12-14 22:23:40,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:23:40,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1261842348, now seen corresponding path program 1 times [2021-12-14 22:23:40,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:23:40,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713577958] [2021-12-14 22:23:40,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:23:40,592 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:23:40,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:23:40,593 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) [2021-12-14 22:23:40,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-14 22:23:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:23:40,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 22:23:40,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:23:40,689 INFO L388 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 [2021-12-14 22:23:40,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:23:40,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 22:23:41,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:23:41,645 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:23:41,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713577958] [2021-12-14 22:23:41,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1713577958] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 22:23:41,645 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-14 22:23:41,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-12-14 22:23:41,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541274781] [2021-12-14 22:23:41,646 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-14 22:23:41,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 22:23:41,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:23:41,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 22:23:41,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 22:23:41,647 INFO L87 Difference]: Start difference. First operand 172 states and 188 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) [2021-12-14 22:23:44,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:23:44,085 INFO L93 Difference]: Finished difference Result 178 states and 194 transitions. [2021-12-14 22:23:44,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 22:23:44,085 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 [2021-12-14 22:23:44,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:23:44,086 INFO L225 Difference]: With dead ends: 178 [2021-12-14 22:23:44,086 INFO L226 Difference]: Without dead ends: 178 [2021-12-14 22:23:44,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-12-14 22:23:44,087 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 32 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-14 22:23:44,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 625 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-14 22:23:44,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-12-14 22:23:44,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2021-12-14 22:23:44,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 109 states have (on average 1.761467889908257) internal successors, (192), 175 states have internal predecessors, (192), 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) [2021-12-14 22:23:44,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 194 transitions. [2021-12-14 22:23:44,094 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 194 transitions. Word has length 10 [2021-12-14 22:23:44,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:23:44,094 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 194 transitions. [2021-12-14 22:23:44,094 INFO L471 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) [2021-12-14 22:23:44,095 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 194 transitions. [2021-12-14 22:23:44,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-14 22:23:44,095 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:23:44,095 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 22:23:44,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-14 22:23:44,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:23:44,303 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-12-14 22:23:44,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:23:44,304 INFO L85 PathProgramCache]: Analyzing trace with hash 2007736717, now seen corresponding path program 1 times [2021-12-14 22:23:44,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:23:44,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [942432011] [2021-12-14 22:23:44,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:23:44,305 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:23:44,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:23:44,308 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) [2021-12-14 22:23:44,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-14 22:23:44,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:23:44,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 22:23:44,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:23:44,513 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:23:44,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 22:23:44,614 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:23:44,614 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:23:44,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [942432011] [2021-12-14 22:23:44,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [942432011] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 22:23:44,615 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-14 22:23:44,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-12-14 22:23:44,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864534973] [2021-12-14 22:23:44,615 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-14 22:23:44,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 22:23:44,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:23:44,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 22:23:44,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-12-14 22:23:44,616 INFO L87 Difference]: Start difference. First operand 178 states and 194 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 22:23:44,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:23:44,798 INFO L93 Difference]: Finished difference Result 198 states and 214 transitions. [2021-12-14 22:23:44,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 22:23:44,799 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2021-12-14 22:23:44,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:23:44,800 INFO L225 Difference]: With dead ends: 198 [2021-12-14 22:23:44,800 INFO L226 Difference]: Without dead ends: 198 [2021-12-14 22:23:44,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-12-14 22:23:44,801 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 27 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1268 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 [2021-12-14 22:23:44,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 1268 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 22:23:44,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-12-14 22:23:44,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-12-14 22:23:44,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 129 states have (on average 1.6434108527131783) internal successors, (212), 195 states have internal predecessors, (212), 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) [2021-12-14 22:23:44,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 214 transitions. [2021-12-14 22:23:44,808 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 214 transitions. Word has length 25 [2021-12-14 22:23:44,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:23:44,809 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 214 transitions. [2021-12-14 22:23:44,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 22:23:44,809 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 214 transitions. [2021-12-14 22:23:44,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-14 22:23:44,810 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:23:44,810 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 22:23:44,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-14 22:23:45,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:23:45,020 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-12-14 22:23:45,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:23:45,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1499348962, now seen corresponding path program 2 times [2021-12-14 22:23:45,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:23:45,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [702961461] [2021-12-14 22:23:45,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 22:23:45,021 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:23:45,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:23:45,022 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) [2021-12-14 22:23:45,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-14 22:23:45,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-14 22:23:45,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 22:23:45,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:23:45,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:23:45,206 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 22:23:45,230 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-14 22:23:45,230 INFO L388 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 [2021-12-14 22:23:45,252 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-12-14 22:23:45,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 22:23:45,254 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:23:45,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [702961461] [2021-12-14 22:23:45,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [702961461] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:23:45,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:23:45,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 22:23:45,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371766870] [2021-12-14 22:23:45,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:23:45,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 22:23:45,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:23:45,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 22:23:45,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 22:23:45,261 INFO L87 Difference]: Start difference. First operand 198 states and 214 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 22:23:45,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:23:45,656 INFO L93 Difference]: Finished difference Result 209 states and 226 transitions. [2021-12-14 22:23:45,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 22:23:45,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2021-12-14 22:23:45,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:23:45,657 INFO L225 Difference]: With dead ends: 209 [2021-12-14 22:23:45,658 INFO L226 Difference]: Without dead ends: 209 [2021-12-14 22:23:45,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 22:23:45,659 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 147 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-14 22:23:45,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 149 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-14 22:23:45,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-12-14 22:23:45,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 193. [2021-12-14 22:23:45,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 129 states have (on average 1.6046511627906976) internal successors, (207), 190 states have internal predecessors, (207), 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) [2021-12-14 22:23:45,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 209 transitions. [2021-12-14 22:23:45,665 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 209 transitions. Word has length 45 [2021-12-14 22:23:45,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:23:45,665 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 209 transitions. [2021-12-14 22:23:45,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 22:23:45,666 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 209 transitions. [2021-12-14 22:23:45,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-14 22:23:45,666 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:23:45,667 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 22:23:45,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-14 22:23:45,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:23:45,875 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-12-14 22:23:45,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:23:45,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1499348961, now seen corresponding path program 1 times [2021-12-14 22:23:45,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:23:45,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [986477469] [2021-12-14 22:23:45,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:23:45,877 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:23:45,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:23:45,877 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) [2021-12-14 22:23:45,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-14 22:23:46,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:23:46,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-14 22:23:46,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:23:46,161 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:23:46,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 22:23:46,439 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:23:46,439 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:23:46,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [986477469] [2021-12-14 22:23:46,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [986477469] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 22:23:46,439 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-14 22:23:46,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-12-14 22:23:46,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682384153] [2021-12-14 22:23:46,439 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-14 22:23:46,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-14 22:23:46,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:23:46,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-14 22:23:46,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2021-12-14 22:23:46,441 INFO L87 Difference]: Start difference. First operand 193 states and 209 transitions. Second operand has 20 states, 20 states have (on average 4.0) internal successors, (80), 20 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 22:23:46,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:23:46,781 INFO L93 Difference]: Finished difference Result 201 states and 217 transitions. [2021-12-14 22:23:46,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 22:23:46,781 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.0) internal successors, (80), 20 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45 [2021-12-14 22:23:46,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:23:46,782 INFO L225 Difference]: With dead ends: 201 [2021-12-14 22:23:46,782 INFO L226 Difference]: Without dead ends: 201 [2021-12-14 22:23:46,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2021-12-14 22:23:46,783 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 33 mSDsluCounter, 1628 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 22:23:46,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 1813 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 22:23:46,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-12-14 22:23:46,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2021-12-14 22:23:46,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 137 states have (on average 1.5693430656934306) internal successors, (215), 198 states have internal predecessors, (215), 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) [2021-12-14 22:23:46,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 217 transitions. [2021-12-14 22:23:46,789 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 217 transitions. Word has length 45 [2021-12-14 22:23:46,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:23:46,789 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 217 transitions. [2021-12-14 22:23:46,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.0) internal successors, (80), 20 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 22:23:46,789 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 217 transitions. [2021-12-14 22:23:46,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-14 22:23:46,790 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:23:46,790 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 22:23:46,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-14 22:23:46,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:23:46,991 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-12-14 22:23:46,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:23:46,991 INFO L85 PathProgramCache]: Analyzing trace with hash 621817561, now seen corresponding path program 2 times [2021-12-14 22:23:46,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:23:46,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761319455] [2021-12-14 22:23:46,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 22:23:46,992 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:23:46,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:23:46,994 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) [2021-12-14 22:23:46,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-14 22:23:47,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-14 22:23:47,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 22:23:47,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 22:23:47,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:23:47,272 INFO L354 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2021-12-14 22:23:47,272 INFO L388 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 [2021-12-14 22:23:47,320 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-14 22:23:47,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 22:23:47,320 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:23:47,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761319455] [2021-12-14 22:23:47,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761319455] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:23:47,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:23:47,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 22:23:47,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164972673] [2021-12-14 22:23:47,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:23:47,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 22:23:47,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:23:47,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 22:23:47,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-14 22:23:47,322 INFO L87 Difference]: Start difference. First operand 201 states and 217 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 22:23:48,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:23:48,413 INFO L93 Difference]: Finished difference Result 321 states and 351 transitions. [2021-12-14 22:23:48,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 22:23:48,414 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-12-14 22:23:48,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:23:48,415 INFO L225 Difference]: With dead ends: 321 [2021-12-14 22:23:48,415 INFO L226 Difference]: Without dead ends: 321 [2021-12-14 22:23:48,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-14 22:23:48,416 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 436 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-14 22:23:48,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 484 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-14 22:23:48,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-12-14 22:23:48,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 265. [2021-12-14 22:23:48,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 202 states have (on average 1.6732673267326732) internal successors, (338), 262 states have internal predecessors, (338), 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) [2021-12-14 22:23:48,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 340 transitions. [2021-12-14 22:23:48,421 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 340 transitions. Word has length 53 [2021-12-14 22:23:48,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:23:48,421 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 340 transitions. [2021-12-14 22:23:48,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 22:23:48,421 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 340 transitions. [2021-12-14 22:23:48,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-14 22:23:48,422 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:23:48,422 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 22:23:48,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-14 22:23:48,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:23:48,623 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-12-14 22:23:48,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:23:48,623 INFO L85 PathProgramCache]: Analyzing trace with hash 372982570, now seen corresponding path program 1 times [2021-12-14 22:23:48,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:23:48,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123813703] [2021-12-14 22:23:48,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:23:48,624 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:23:48,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:23:48,625 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) [2021-12-14 22:23:48,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-14 22:23:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:23:49,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-14 22:23:49,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:23:49,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 22:23:49,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 14 treesize of output 16 [2021-12-14 22:23:49,155 INFO L388 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 22 treesize of output 20 [2021-12-14 22:23:49,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 22:23:49,329 INFO L388 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 [2021-12-14 22:23:49,344 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-14 22:23:49,344 INFO L388 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 18 treesize of output 18 [2021-12-14 22:23:49,395 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-14 22:23:49,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 22:23:49,395 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:23:49,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123813703] [2021-12-14 22:23:49,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123813703] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:23:49,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:23:49,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 22:23:49,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189745044] [2021-12-14 22:23:49,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:23:49,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 22:23:49,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:23:49,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 22:23:49,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-14 22:23:49,397 INFO L87 Difference]: Start difference. First operand 265 states and 340 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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) [2021-12-14 22:23:49,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:23:49,462 INFO L93 Difference]: Finished difference Result 266 states and 341 transitions. [2021-12-14 22:23:49,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 22:23:49,463 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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 56 [2021-12-14 22:23:49,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:23:49,464 INFO L225 Difference]: With dead ends: 266 [2021-12-14 22:23:49,464 INFO L226 Difference]: Without dead ends: 266 [2021-12-14 22:23:49,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-12-14 22:23:49,465 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 4 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 166 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 22:23:49,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 864 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 166 Unchecked, 0.0s Time] [2021-12-14 22:23:49,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-12-14 22:23:49,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2021-12-14 22:23:49,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 203 states have (on average 1.6699507389162562) internal successors, (339), 263 states have internal predecessors, (339), 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) [2021-12-14 22:23:49,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 341 transitions. [2021-12-14 22:23:49,471 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 341 transitions. Word has length 56 [2021-12-14 22:23:49,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:23:49,471 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 341 transitions. [2021-12-14 22:23:49,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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) [2021-12-14 22:23:49,472 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 341 transitions. [2021-12-14 22:23:49,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-14 22:23:49,472 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:23:49,473 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 22:23:49,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-14 22:23:49,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:23:49,687 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-12-14 22:23:49,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:23:49,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1322442817, now seen corresponding path program 1 times [2021-12-14 22:23:49,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:23:49,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197660100] [2021-12-14 22:23:49,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:23:49,688 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:23:49,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:23:49,689 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) [2021-12-14 22:23:49,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-14 22:23:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:23:49,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 22:23:49,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:23:50,042 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-14 22:23:50,042 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 22:23:50,043 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:23:50,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [197660100] [2021-12-14 22:23:50,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [197660100] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:23:50,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:23:50,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 22:23:50,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647874266] [2021-12-14 22:23:50,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:23:50,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 22:23:50,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:23:50,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 22:23:50,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 22:23:50,045 INFO L87 Difference]: Start difference. First operand 266 states and 341 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 22:23:50,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:23:50,448 INFO L93 Difference]: Finished difference Result 284 states and 363 transitions. [2021-12-14 22:23:50,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 22:23:50,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2021-12-14 22:23:50,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:23:50,449 INFO L225 Difference]: With dead ends: 284 [2021-12-14 22:23:50,450 INFO L226 Difference]: Without dead ends: 284 [2021-12-14 22:23:50,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 22:23:50,450 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 246 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-14 22:23:50,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 186 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-14 22:23:50,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-12-14 22:23:50,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 260. [2021-12-14 22:23:50,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 203 states have (on average 1.6108374384236452) internal successors, (327), 257 states have internal predecessors, (327), 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) [2021-12-14 22:23:50,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 329 transitions. [2021-12-14 22:23:50,456 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 329 transitions. Word has length 57 [2021-12-14 22:23:50,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:23:50,457 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 329 transitions. [2021-12-14 22:23:50,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 22:23:50,457 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 329 transitions. [2021-12-14 22:23:50,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-14 22:23:50,461 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:23:50,461 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 22:23:50,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-12-14 22:23:50,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:23:50,674 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-12-14 22:23:50,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:23:50,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1322442816, now seen corresponding path program 1 times [2021-12-14 22:23:50,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:23:50,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [748804870] [2021-12-14 22:23:50,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:23:50,675 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:23:50,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:23:50,676 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) [2021-12-14 22:23:50,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-14 22:23:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:23:50,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 22:23:50,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:23:51,132 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-14 22:23:51,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 22:23:51,132 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:23:51,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [748804870] [2021-12-14 22:23:51,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [748804870] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:23:51,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:23:51,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 22:23:51,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194953383] [2021-12-14 22:23:51,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:23:51,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 22:23:51,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:23:51,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 22:23:51,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-14 22:23:51,134 INFO L87 Difference]: Start difference. First operand 260 states and 329 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 22:23:51,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:23:51,441 INFO L93 Difference]: Finished difference Result 218 states and 235 transitions. [2021-12-14 22:23:51,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 22:23:51,441 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2021-12-14 22:23:51,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:23:51,442 INFO L225 Difference]: With dead ends: 218 [2021-12-14 22:23:51,443 INFO L226 Difference]: Without dead ends: 218 [2021-12-14 22:23:51,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-14 22:23:51,443 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 182 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 22:23:51,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 617 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 22:23:51,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-12-14 22:23:51,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 196. [2021-12-14 22:23:51,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 139 states have (on average 1.5107913669064748) internal successors, (210), 193 states have internal predecessors, (210), 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) [2021-12-14 22:23:51,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 212 transitions. [2021-12-14 22:23:51,448 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 212 transitions. Word has length 57 [2021-12-14 22:23:51,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:23:51,448 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 212 transitions. [2021-12-14 22:23:51,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 22:23:51,448 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 212 transitions. [2021-12-14 22:23:51,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-14 22:23:51,449 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:23:51,449 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 22:23:51,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-12-14 22:23:51,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:23:51,661 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-12-14 22:23:51,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:23:51,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1953963627, now seen corresponding path program 1 times [2021-12-14 22:23:51,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:23:51,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [262183028] [2021-12-14 22:23:51,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:23:51,662 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:23:51,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:23:51,664 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) [2021-12-14 22:23:51,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-14 22:23:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:23:51,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:23:51,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:23:51,993 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-14 22:23:51,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 22:23:51,993 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:23:51,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [262183028] [2021-12-14 22:23:51,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [262183028] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:23:51,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:23:51,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 22:23:51,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372212711] [2021-12-14 22:23:51,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:23:51,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 22:23:51,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:23:51,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 22:23:51,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-14 22:23:51,995 INFO L87 Difference]: Start difference. First operand 196 states and 212 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 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) [2021-12-14 22:23:52,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:23:52,229 INFO L93 Difference]: Finished difference Result 214 states and 231 transitions. [2021-12-14 22:23:52,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 22:23:52,230 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 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 [2021-12-14 22:23:52,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:23:52,231 INFO L225 Difference]: With dead ends: 214 [2021-12-14 22:23:52,231 INFO L226 Difference]: Without dead ends: 214 [2021-12-14 22:23:52,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-14 22:23:52,232 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 214 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 22:23:52,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 306 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 22:23:52,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-12-14 22:23:52,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 207. [2021-12-14 22:23:52,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 151 states have (on average 1.509933774834437) internal successors, (228), 204 states have internal predecessors, (228), 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) [2021-12-14 22:23:52,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 230 transitions. [2021-12-14 22:23:52,236 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 230 transitions. Word has length 58 [2021-12-14 22:23:52,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:23:52,236 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 230 transitions. [2021-12-14 22:23:52,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 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) [2021-12-14 22:23:52,236 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 230 transitions. [2021-12-14 22:23:52,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-14 22:23:52,236 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:23:52,236 INFO L514 BasicCegarLoop]: 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] [2021-12-14 22:23:52,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-12-14 22:23:52,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:23:52,437 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-12-14 22:23:52,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:23:52,437 INFO L85 PathProgramCache]: Analyzing trace with hash 443330279, now seen corresponding path program 1 times [2021-12-14 22:23:52,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:23:52,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444077028] [2021-12-14 22:23:52,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:23:52,438 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:23:52,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:23:52,440 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) [2021-12-14 22:23:52,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-14 22:23:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:23:52,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-14 22:23:52,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:23:52,929 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-12-14 22:23:52,930 INFO L388 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 [2021-12-14 22:23:52,954 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-12-14 22:23:52,955 INFO L388 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 [2021-12-14 22:23:53,144 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-14 22:23:53,145 INFO L388 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 17 treesize of output 23 [2021-12-14 22:23:53,187 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-14 22:23:53,187 INFO L388 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 16 treesize of output 16 [2021-12-14 22:23:53,315 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-14 22:23:53,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 22:23:53,315 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:23:53,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444077028] [2021-12-14 22:23:53,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444077028] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:23:53,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:23:53,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 22:23:53,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544210402] [2021-12-14 22:23:53,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:23:53,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 22:23:53,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:23:53,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 22:23:53,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-14 22:23:53,317 INFO L87 Difference]: Start difference. First operand 207 states and 230 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 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) [2021-12-14 22:23:53,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:23:53,386 INFO L93 Difference]: Finished difference Result 207 states and 229 transitions. [2021-12-14 22:23:53,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 22:23:53,386 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 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 [2021-12-14 22:23:53,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:23:53,387 INFO L225 Difference]: With dead ends: 207 [2021-12-14 22:23:53,387 INFO L226 Difference]: Without dead ends: 207 [2021-12-14 22:23:53,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-14 22:23:53,388 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 4 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 246 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 22:23:53,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 896 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 246 Unchecked, 0.0s Time] [2021-12-14 22:23:53,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-12-14 22:23:53,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2021-12-14 22:23:53,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 151 states have (on average 1.5033112582781456) internal successors, (227), 204 states have internal predecessors, (227), 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) [2021-12-14 22:23:53,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 229 transitions. [2021-12-14 22:23:53,392 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 229 transitions. Word has length 59 [2021-12-14 22:23:53,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:23:53,393 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 229 transitions. [2021-12-14 22:23:53,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 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) [2021-12-14 22:23:53,393 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 229 transitions. [2021-12-14 22:23:53,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-14 22:23:53,395 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:23:53,396 INFO L514 BasicCegarLoop]: 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] [2021-12-14 22:23:53,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-12-14 22:23:53,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:23:53,606 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-12-14 22:23:53,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:23:53,607 INFO L85 PathProgramCache]: Analyzing trace with hash 443330278, now seen corresponding path program 1 times [2021-12-14 22:23:53,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:23:53,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221367189] [2021-12-14 22:23:53,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:23:53,607 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:23:53,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:23:53,609 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) [2021-12-14 22:23:53,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-14 22:23:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:23:53,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 22:23:53,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:23:54,031 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-12-14 22:23:54,032 INFO L388 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 [2021-12-14 22:23:54,058 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-14 22:23:54,059 INFO L388 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 20 treesize of output 25 [2021-12-14 22:23:54,084 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-14 22:23:54,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 22:23:54,085 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:23:54,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221367189] [2021-12-14 22:23:54,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221367189] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:23:54,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:23:54,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 22:23:54,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782982655] [2021-12-14 22:23:54,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:23:54,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 22:23:54,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:23:54,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 22:23:54,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 22:23:54,087 INFO L87 Difference]: Start difference. First operand 207 states and 229 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 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) [2021-12-14 22:23:54,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:23:54,384 INFO L93 Difference]: Finished difference Result 214 states and 236 transitions. [2021-12-14 22:23:54,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 22:23:54,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 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 [2021-12-14 22:23:54,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:23:54,386 INFO L225 Difference]: With dead ends: 214 [2021-12-14 22:23:54,386 INFO L226 Difference]: Without dead ends: 214 [2021-12-14 22:23:54,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 22:23:54,387 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 132 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 22:23:54,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 145 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 22:23:54,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-12-14 22:23:54,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 211. [2021-12-14 22:23:54,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 156 states have (on average 1.5) internal successors, (234), 208 states have internal predecessors, (234), 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) [2021-12-14 22:23:54,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 236 transitions. [2021-12-14 22:23:54,391 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 236 transitions. Word has length 59 [2021-12-14 22:23:54,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:23:54,391 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 236 transitions. [2021-12-14 22:23:54,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 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) [2021-12-14 22:23:54,391 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 236 transitions. [2021-12-14 22:23:54,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-14 22:23:54,392 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:23:54,392 INFO L514 BasicCegarLoop]: 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] [2021-12-14 22:23:54,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-12-14 22:23:54,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:23:54,592 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-12-14 22:23:54,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:23:54,593 INFO L85 PathProgramCache]: Analyzing trace with hash 227895600, now seen corresponding path program 1 times [2021-12-14 22:23:54,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:23:54,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240467084] [2021-12-14 22:23:54,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:23:54,593 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:23:54,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:23:54,595 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) [2021-12-14 22:23:54,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-14 22:23:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:23:55,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-14 22:23:55,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:23:55,191 INFO L388 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 [2021-12-14 22:23:55,220 INFO L388 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 [2021-12-14 22:23:55,319 INFO L354 Elim1Store]: treesize reduction 46, result has 20.7 percent of original size [2021-12-14 22:23:55,319 INFO L388 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 41 treesize of output 31 [2021-12-14 22:23:55,378 INFO L388 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 13 [2021-12-14 22:23:55,391 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-14 22:23:55,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 22:23:55,391 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:23:55,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240467084] [2021-12-14 22:23:55,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1240467084] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:23:55,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:23:55,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 22:23:55,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471482828] [2021-12-14 22:23:55,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:23:55,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 22:23:55,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:23:55,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 22:23:55,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-14 22:23:55,393 INFO L87 Difference]: Start difference. First operand 211 states and 236 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 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) [2021-12-14 22:23:55,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:23:55,923 INFO L93 Difference]: Finished difference Result 209 states and 232 transitions. [2021-12-14 22:23:55,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 22:23:55,924 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 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 62 [2021-12-14 22:23:55,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:23:55,925 INFO L225 Difference]: With dead ends: 209 [2021-12-14 22:23:55,925 INFO L226 Difference]: Without dead ends: 209 [2021-12-14 22:23:55,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 22:23:55,925 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 154 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-14 22:23:55,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 551 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-14 22:23:55,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-12-14 22:23:55,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2021-12-14 22:23:55,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 156 states have (on average 1.4743589743589745) internal successors, (230), 206 states have internal predecessors, (230), 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) [2021-12-14 22:23:55,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 232 transitions. [2021-12-14 22:23:55,931 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 232 transitions. Word has length 62 [2021-12-14 22:23:55,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:23:55,931 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 232 transitions. [2021-12-14 22:23:55,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 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) [2021-12-14 22:23:55,931 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 232 transitions. [2021-12-14 22:23:55,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-14 22:23:55,932 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:23:55,932 INFO L514 BasicCegarLoop]: 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] [2021-12-14 22:23:55,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-12-14 22:23:56,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:23:56,148 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-12-14 22:23:56,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:23:56,149 INFO L85 PathProgramCache]: Analyzing trace with hash 227895601, now seen corresponding path program 1 times [2021-12-14 22:23:56,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:23:56,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426494084] [2021-12-14 22:23:56,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:23:56,149 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:23:56,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:23:56,150 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) [2021-12-14 22:23:56,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-14 22:23:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:23:56,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-14 22:23:56,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:23:56,576 INFO L388 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 22 treesize of output 20 [2021-12-14 22:23:56,602 INFO L388 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 [2021-12-14 22:23:56,628 INFO L388 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 [2021-12-14 22:23:56,641 INFO L388 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 [2021-12-14 22:23:56,721 INFO L388 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 [2021-12-14 22:23:56,729 INFO L388 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 [2021-12-14 22:23:56,779 INFO L388 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 [2021-12-14 22:23:56,783 INFO L388 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 [2021-12-14 22:23:56,798 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-14 22:23:56,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 22:23:56,798 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:23:56,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426494084] [2021-12-14 22:23:56,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426494084] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:23:56,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:23:56,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 22:23:56,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121538611] [2021-12-14 22:23:56,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:23:56,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 22:23:56,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:23:56,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 22:23:56,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-14 22:23:56,799 INFO L87 Difference]: Start difference. First operand 209 states and 232 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 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) [2021-12-14 22:23:57,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:23:57,628 INFO L93 Difference]: Finished difference Result 208 states and 230 transitions. [2021-12-14 22:23:57,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 22:23:57,629 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 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 62 [2021-12-14 22:23:57,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:23:57,630 INFO L225 Difference]: With dead ends: 208 [2021-12-14 22:23:57,630 INFO L226 Difference]: Without dead ends: 208 [2021-12-14 22:23:57,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-12-14 22:23:57,631 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 161 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 22:23:57,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 439 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 22:23:57,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-12-14 22:23:57,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2021-12-14 22:23:57,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 156 states have (on average 1.4615384615384615) internal successors, (228), 205 states have internal predecessors, (228), 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) [2021-12-14 22:23:57,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 230 transitions. [2021-12-14 22:23:57,636 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 230 transitions. Word has length 62 [2021-12-14 22:23:57,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:23:57,636 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 230 transitions. [2021-12-14 22:23:57,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 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) [2021-12-14 22:23:57,636 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 230 transitions. [2021-12-14 22:23:57,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-14 22:23:57,637 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:23:57,637 INFO L514 BasicCegarLoop]: 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] [2021-12-14 22:23:57,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-12-14 22:23:57,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:23:57,838 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-12-14 22:23:57,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:23:57,838 INFO L85 PathProgramCache]: Analyzing trace with hash 90810075, now seen corresponding path program 1 times [2021-12-14 22:23:57,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:23:57,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628697981] [2021-12-14 22:23:57,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:23:57,839 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:23:57,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:23:57,840 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) [2021-12-14 22:23:57,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-14 22:23:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:23:58,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-14 22:23:58,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:23:58,282 INFO L388 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 22 treesize of output 20 [2021-12-14 22:23:58,340 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-14 22:23:58,340 INFO L388 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 23 treesize of output 30 [2021-12-14 22:23:58,369 INFO L388 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 [2021-12-14 22:23:58,443 INFO L388 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 39 treesize of output 39 [2021-12-14 22:23:58,557 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-14 22:23:58,557 INFO L388 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 48 treesize of output 49 [2021-12-14 22:23:58,594 INFO L388 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 45 treesize of output 18 [2021-12-14 22:23:58,619 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-14 22:23:58,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 22:23:58,620 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:23:58,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628697981] [2021-12-14 22:23:58,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [628697981] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:23:58,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:23:58,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 22:23:58,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349863869] [2021-12-14 22:23:58,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:23:58,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 22:23:58,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:23:58,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 22:23:58,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-14 22:23:58,622 INFO L87 Difference]: Start difference. First operand 208 states and 230 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 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) [2021-12-14 22:23:59,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:23:59,617 INFO L93 Difference]: Finished difference Result 229 states and 252 transitions. [2021-12-14 22:23:59,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 22:23:59,617 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 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 66 [2021-12-14 22:23:59,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:23:59,618 INFO L225 Difference]: With dead ends: 229 [2021-12-14 22:23:59,618 INFO L226 Difference]: Without dead ends: 229 [2021-12-14 22:23:59,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-12-14 22:23:59,619 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 185 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-14 22:23:59,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 592 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 322 Invalid, 0 Unknown, 80 Unchecked, 0.9s Time] [2021-12-14 22:23:59,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-12-14 22:23:59,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 217. [2021-12-14 22:23:59,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 165 states have (on average 1.4727272727272727) internal successors, (243), 214 states have internal predecessors, (243), 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) [2021-12-14 22:23:59,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 245 transitions. [2021-12-14 22:23:59,624 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 245 transitions. Word has length 66 [2021-12-14 22:23:59,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:23:59,624 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 245 transitions. [2021-12-14 22:23:59,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 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) [2021-12-14 22:23:59,625 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 245 transitions. [2021-12-14 22:23:59,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-14 22:23:59,625 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:23:59,625 INFO L514 BasicCegarLoop]: 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] [2021-12-14 22:23:59,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-12-14 22:23:59,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:23:59,842 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-12-14 22:23:59,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:23:59,842 INFO L85 PathProgramCache]: Analyzing trace with hash 90810076, now seen corresponding path program 1 times [2021-12-14 22:23:59,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:23:59,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1499747290] [2021-12-14 22:23:59,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:23:59,843 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:23:59,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:23:59,844 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) [2021-12-14 22:23:59,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-14 22:24:00,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:24:00,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-14 22:24:00,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:24:00,324 INFO L388 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 24 treesize of output 22 [2021-12-14 22:24:00,373 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-14 22:24:00,374 INFO L388 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 16 treesize of output 16 [2021-12-14 22:24:00,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-12-14 22:24:00,416 INFO L388 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 [2021-12-14 22:24:00,431 INFO L388 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 [2021-12-14 22:24:00,529 INFO L388 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 [2021-12-14 22:24:00,536 INFO L388 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 [2021-12-14 22:24:00,647 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-14 22:24:00,647 INFO L388 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 [2021-12-14 22:24:00,654 INFO L388 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 [2021-12-14 22:24:00,735 INFO L388 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 [2021-12-14 22:24:00,746 INFO L388 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 [2021-12-14 22:24:00,778 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-14 22:24:00,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 22:24:00,778 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:24:00,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1499747290] [2021-12-14 22:24:00,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1499747290] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:24:00,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:24:00,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 22:24:00,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993160288] [2021-12-14 22:24:00,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:24:00,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 22:24:00,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:24:00,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 22:24:00,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-14 22:24:00,780 INFO L87 Difference]: Start difference. First operand 217 states and 245 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 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) [2021-12-14 22:24:01,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:24:01,847 INFO L93 Difference]: Finished difference Result 229 states and 249 transitions. [2021-12-14 22:24:01,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 22:24:01,847 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 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 66 [2021-12-14 22:24:01,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:24:01,848 INFO L225 Difference]: With dead ends: 229 [2021-12-14 22:24:01,848 INFO L226 Difference]: Without dead ends: 229 [2021-12-14 22:24:01,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-12-14 22:24:01,849 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 191 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-14 22:24:01,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 385 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-14 22:24:01,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-12-14 22:24:01,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 217. [2021-12-14 22:24:01,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 165 states have (on average 1.4484848484848485) internal successors, (239), 214 states have internal predecessors, (239), 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) [2021-12-14 22:24:01,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 241 transitions. [2021-12-14 22:24:01,853 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 241 transitions. Word has length 66 [2021-12-14 22:24:01,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:24:01,854 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 241 transitions. [2021-12-14 22:24:01,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 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) [2021-12-14 22:24:01,854 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 241 transitions. [2021-12-14 22:24:01,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-14 22:24:01,855 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:24:01,855 INFO L514 BasicCegarLoop]: 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] [2021-12-14 22:24:01,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-12-14 22:24:02,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:24:02,059 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-12-14 22:24:02,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:24:02,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1330037336, now seen corresponding path program 1 times [2021-12-14 22:24:02,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:24:02,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [224583337] [2021-12-14 22:24:02,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:24:02,060 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:24:02,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:24:02,061 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) [2021-12-14 22:24:02,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-14 22:24:02,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:24:02,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-14 22:24:02,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:24:02,597 INFO L388 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 24 treesize of output 22 [2021-12-14 22:24:02,650 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-14 22:24:02,650 INFO L388 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 22 treesize of output 29 [2021-12-14 22:24:02,683 INFO L388 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 [2021-12-14 22:24:02,752 INFO L388 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 37 treesize of output 37 [2021-12-14 22:24:02,858 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-14 22:24:02,858 INFO L388 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 46 treesize of output 47 [2021-12-14 22:24:02,961 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-14 22:24:02,961 INFO L388 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 46 treesize of output 47 [2021-12-14 22:24:03,007 INFO L388 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 43 treesize of output 16 [2021-12-14 22:24:03,034 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-12-14 22:24:03,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 22:24:03,180 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1338 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0) v_ArrVal_1338) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0))))) (_ bv1 1)))) is different from false [2021-12-14 22:24:03,211 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1338 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1337 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem144#1.base| v_ArrVal_1337))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1338)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))))))) (_ bv1 1)))) is different from false [2021-12-14 22:24:03,244 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1338 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1337 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1337))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1338)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1)))))))))) (_ bv1 1)))) is different from false [2021-12-14 22:24:03,288 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1338 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1337 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1336 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1336))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1337)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1338)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))))))))))))) is different from false [2021-12-14 22:24:03,337 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 22:24:03,338 INFO L388 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 124 treesize of output 86 [2021-12-14 22:24:03,342 INFO L388 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 1705 treesize of output 1363 [2021-12-14 22:24:03,359 INFO L388 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 1359 treesize of output 1100 [2021-12-14 22:24:03,374 INFO L388 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 1100 treesize of output 862 [2021-12-14 22:24:03,384 INFO L388 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 862 treesize of output 834 [2021-12-14 22:24:23,476 INFO L354 Elim1Store]: treesize reduction -11, result has 113.6 percent of original size [2021-12-14 22:24:23,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 273 treesize of output 350 [2021-12-14 22:24:25,771 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 190 trivial. 2 not checked. [2021-12-14 22:24:25,772 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 22:24:25,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [224583337] [2021-12-14 22:24:25,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [224583337] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 22:24:25,772 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-14 22:24:25,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 18 [2021-12-14 22:24:25,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34313880] [2021-12-14 22:24:25,773 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-14 22:24:25,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-14 22:24:25,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 22:24:25,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-14 22:24:25,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=164, Unknown=7, NotChecked=116, Total=342 [2021-12-14 22:24:25,774 INFO L87 Difference]: Start difference. First operand 217 states and 241 transitions. Second operand has 19 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 19 states have internal predecessors, (51), 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) [2021-12-14 22:24:26,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:24:26,966 INFO L93 Difference]: Finished difference Result 225 states and 245 transitions. [2021-12-14 22:24:26,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 22:24:26,966 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 19 states have internal predecessors, (51), 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 71 [2021-12-14 22:24:26,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 22:24:26,967 INFO L225 Difference]: With dead ends: 225 [2021-12-14 22:24:26,967 INFO L226 Difference]: Without dead ends: 225 [2021-12-14 22:24:26,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 124 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=86, Invalid=229, Unknown=7, NotChecked=140, Total=462 [2021-12-14 22:24:26,968 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 457 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 874 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 22:24:26,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 657 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 260 Invalid, 0 Unknown, 874 Unchecked, 0.8s Time] [2021-12-14 22:24:26,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-12-14 22:24:26,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 216. [2021-12-14 22:24:26,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 165 states have (on average 1.4363636363636363) internal successors, (237), 213 states have internal predecessors, (237), 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) [2021-12-14 22:24:26,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 239 transitions. [2021-12-14 22:24:26,972 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 239 transitions. Word has length 71 [2021-12-14 22:24:26,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 22:24:26,972 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 239 transitions. [2021-12-14 22:24:26,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 19 states have internal predecessors, (51), 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) [2021-12-14 22:24:26,973 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 239 transitions. [2021-12-14 22:24:26,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-14 22:24:26,973 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 22:24:26,973 INFO L514 BasicCegarLoop]: 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] [2021-12-14 22:24:26,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-12-14 22:24:27,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 22:24:27,174 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-12-14 22:24:27,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:24:27,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1330037335, now seen corresponding path program 1 times [2021-12-14 22:24:27,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 22:24:27,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [740600594] [2021-12-14 22:24:27,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:24:27,175 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 22:24:27,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 22:24:27,176 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) [2021-12-14 22:24:27,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-14 22:24:27,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:24:27,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-14 22:24:27,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:24:28,018 INFO L388 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 22 treesize of output 20 [2021-12-14 22:24:28,060 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-14 22:24:28,060 INFO L388 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 16 treesize of output 16 [2021-12-14 22:24:28,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-12-14 22:24:28,092 INFO L388 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 [2021-12-14 22:24:28,103 INFO L388 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 [2021-12-14 22:24:28,180 INFO L388 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 [2021-12-14 22:24:28,187 INFO L388 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 [2021-12-14 22:24:28,300 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-14 22:24:28,301 INFO L388 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 [2021-12-14 22:24:28,307 INFO L388 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 [2021-12-14 22:24:28,461 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-14 22:24:28,461 INFO L388 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 [2021-12-14 22:24:28,466 INFO L388 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 [2021-12-14 22:24:28,574 INFO L388 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 [2021-12-14 22:24:28,577 INFO L388 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 [2021-12-14 22:24:28,612 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-12-14 22:24:28,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 22:24:29,714 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1458 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 ((_ sign_extend 32) (bvadd |c_ULTIMATE.start_main_~j~0#1| (_ bv1 32)))) (.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem146#1.base| v_ArrVal_1458) |c_ULTIMATE.start_main_~argv~0#1.base|) (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|)))) (bvule (bvadd .cse0 .cse1) (bvadd .cse0 (_ bv1 64) .cse1)))) (forall ((v_ArrVal_1458 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1457 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse2 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (bvule (bvadd ((_ sign_extend 32) (bvadd |c_ULTIMATE.start_main_~j~0#1| (_ bv1 32))) (_ bv1 64) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem146#1.base| v_ArrVal_1458) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem146#1.base| v_ArrVal_1457) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)))))) is different from false [2021-12-14 22:24:29,813 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1458 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1457 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse1 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (bvule (bvadd ((_ sign_extend 32) (bvadd |c_ULTIMATE.start_main_~j~0#1| (_ bv1 32))) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1458) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) (_ bv1 64)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1457) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1)))))) (forall ((v_ArrVal_1458 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse2 ((_ sign_extend 32) (bvadd |c_ULTIMATE.start_main_~j~0#1| (_ bv1 32)))) (.cse3 (let ((.cse4 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4) v_ArrVal_1458) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4)))) (bvule (bvadd .cse2 .cse3) (bvadd .cse2 .cse3 (_ bv1 64)))))) is different from false [2021-12-14 22:24:29,965 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1458 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (let ((.cse2 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2) v_ArrVal_1458) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (.cse1 ((_ sign_extend 32) (_ bv1 32)))) (bvule (bvadd .cse0 .cse1) (bvadd .cse0 .cse1 (_ bv1 64))))) (forall ((v_ArrVal_1458 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1457 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse4 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_1458) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4) ((_ sign_extend 32) (_ bv1 32)) (_ bv1 64)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_1457) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4))))))) is different from false [2021-12-14 22:24:30,061 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1458 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1455 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1457 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1456 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem144#1.base| v_ArrVal_1455)) (.cse1 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem144#1.base| v_ArrVal_1456) .cse0 v_ArrVal_1458) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) ((_ sign_extend 32) (_ bv1 32)) (_ bv1 64)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_1457) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1)))))) (forall ((v_ArrVal_1458 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1455 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1456 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse3 (let ((.cse5 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem144#1.base| v_ArrVal_1456) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem144#1.base| v_ArrVal_1455) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse5) v_ArrVal_1458) |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 [2021-12-14 22:24:30,169 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1458 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1455 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1456 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 ((_ sign_extend 32) (_ bv1 32))) (.cse1 (let ((.cse3 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))) (store (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_1456) (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_1455) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3) v_ArrVal_1458)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3)))) (bvule (bvadd .cse0 .cse1) (bvadd .cse0 (_ bv1 64) .cse1)))) (forall ((v_ArrVal_1458 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1455 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1457 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1456 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse6 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse4 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse6))) (let ((.cse7 (store |c_#memory_$Pointer$.base| .cse4 v_ArrVal_1455))) (let ((.cse5 (select (select .cse7 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse6))) (bvule (bvadd ((_ sign_extend 32) (_ bv1 32)) (_ bv1 64) (select (select (store (store |c_#memory_$Pointer$.offset| .cse4 v_ArrVal_1456) .cse5 v_ArrVal_1458) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse6)) (select |c_#length| (select (select (store .cse7 .cse5 v_ArrVal_1457) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse6))))))))) is different from false [2021-12-14 22:24:30,363 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1458 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1455 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1454 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1456 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1453 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 ((_ sign_extend 32) (_ bv1 32))) (.cse1 (let ((.cse4 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1454))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1453) .cse2 v_ArrVal_1456) (select (select (store .cse3 .cse2 v_ArrVal_1455) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4) v_ArrVal_1458))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4)))) (bvule (bvadd .cse0 .cse1) (bvadd .cse0 (_ bv1 64) .cse1)))) (forall ((v_ArrVal_1458 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1455 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1454 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1457 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1456 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1453 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse9 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1454)) (.cse7 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse5 (select (select .cse9 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7))) (let ((.cse8 (store .cse9 .cse5 v_ArrVal_1455))) (let ((.cse6 (select (select .cse8 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7))) (bvule (bvadd ((_ sign_extend 32) (_ bv1 32)) (_ bv1 64) (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1453) .cse5 v_ArrVal_1456) .cse6 v_ArrVal_1458) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7)) (select |c_#length| (select (select (store .cse8 .cse6 v_ArrVal_1457) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7))))))))) is different from false [2021-12-14 22:24:30,439 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 22:24:30,440 INFO L388 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 228 treesize of output 216 [2021-12-14 22:24:30,452 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 22:24:30,452 INFO L388 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 202 treesize of output 138 [2021-12-14 22:24:30,458 INFO L388 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 771 treesize of output 636 [2021-12-14 22:24:30,469 INFO L388 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 16521 treesize of output 15504 [2021-12-14 22:24:30,554 INFO L388 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 15500 treesize of output 14716 [2021-12-14 22:24:30,600 INFO L388 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 14716 treesize of output 13260 [2021-12-14 22:24:30,641 INFO L388 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 13260 treesize of output 12448 [2021-12-14 22:24:30,686 INFO L388 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 12448 treesize of output 9424 [2021-12-14 22:24:30,726 INFO L388 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 9424 treesize of output 8682