./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-properties/list_search-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list_search-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1ea7ddff382751fa0e11562333bdb4981cac7bdbf1d356a007804e7e2e5a289 ................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list_search-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1ea7ddff382751fa0e11562333bdb4981cac7bdbf1d356a007804e7e2e5a289 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:16:49,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:16:49,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:16:49,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:16:49,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:16:49,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:16:49,243 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:16:49,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:16:49,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:16:49,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:16:49,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:16:49,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:16:49,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:16:49,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:16:49,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:16:49,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:16:49,269 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:16:49,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:16:49,281 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:16:49,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:16:49,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:16:49,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:16:49,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:16:49,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:16:49,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:16:49,303 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:16:49,303 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:16:49,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:16:49,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:16:49,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:16:49,307 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:16:49,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:16:49,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:16:49,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:16:49,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:16:49,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:16:49,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:16:49,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:16:49,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:16:49,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:16:49,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:16:49,316 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-10-28 09:16:49,343 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:16:49,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:16:49,344 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:16:49,345 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:16:49,346 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:16:49,347 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:16:49,347 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:16:49,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:16:49,348 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:16:49,349 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:16:49,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:16:49,349 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:16:49,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:16:49,350 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:16:49,351 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:16:49,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:16:49,352 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:16:49,352 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:16:49,352 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:16:49,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:16:49,353 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:16:49,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:16:49,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:16:49,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:16:49,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:16:49,355 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:16:49,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:16:49,356 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:16:49,356 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1ea7ddff382751fa0e11562333bdb4981cac7bdbf1d356a007804e7e2e5a289 [2021-10-28 09:16:49,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:16:49,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:16:49,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:16:49,770 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:16:49,772 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:16:49,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/list-properties/list_search-2.i [2021-10-28 09:16:49,863 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/data/b89673ccc/03bf0f4d054d4408b733247e73a7a596/FLAG6602372aa [2021-10-28 09:16:50,483 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:16:50,484 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/sv-benchmarks/c/list-properties/list_search-2.i [2021-10-28 09:16:50,519 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/data/b89673ccc/03bf0f4d054d4408b733247e73a7a596/FLAG6602372aa [2021-10-28 09:16:50,753 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/data/b89673ccc/03bf0f4d054d4408b733247e73a7a596 [2021-10-28 09:16:50,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:16:50,758 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:16:50,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:16:50,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:16:50,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:16:50,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:16:50" (1/1) ... [2021-10-28 09:16:50,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fae742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:50, skipping insertion in model container [2021-10-28 09:16:50,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:16:50" (1/1) ... [2021-10-28 09:16:50,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:16:50,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:16:51,145 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/sv-benchmarks/c/list-properties/list_search-2.i[813,826] [2021-10-28 09:16:51,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:16:51,549 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) [2021-10-28 09:16:51,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@31669055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:51, skipping insertion in model container [2021-10-28 09:16:51,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:16:51,550 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-28 09:16:51,553 INFO L168 Benchmark]: Toolchain (without parser) took 793.24 ms. Allocated memory is still 121.6 MB. Free memory was 79.5 MB in the beginning and 92.0 MB in the end (delta: -12.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:16:51,554 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 121.6 MB. Free memory is still 97.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:16:51,560 INFO L168 Benchmark]: CACSL2BoogieTranslator took 781.50 ms. Allocated memory is still 121.6 MB. Free memory was 79.3 MB in the beginning and 92.0 MB in the end (delta: -12.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:16:51,563 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 121.6 MB. Free memory is still 97.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 781.50 ms. Allocated memory is still 121.6 MB. Free memory was 79.3 MB in the beginning and 92.0 MB in the end (delta: -12.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 792]: 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:16:54,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:16:54,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:16:54,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:16:54,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:16:54,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:16:54,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:16:54,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:16:54,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:16:54,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:16:54,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:16:54,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:16:54,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:16:54,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:16:54,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:16:54,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:16:54,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:16:54,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:16:54,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:16:54,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:16:54,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:16:54,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:16:54,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:16:54,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:16:54,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:16:54,330 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:16:54,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:16:54,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:16:54,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:16:54,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:16:54,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:16:54,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:16:54,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:16:54,353 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:16:54,356 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:16:54,356 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:16:54,357 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:16:54,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:16:54,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:16:54,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:16:54,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:16:54,375 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2021-10-28 09:16:54,437 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:16:54,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:16:54,438 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:16:54,438 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:16:54,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:16:54,441 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:16:54,442 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:16:54,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:16:54,442 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:16:54,443 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:16:54,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:16:54,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:16:54,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:16:54,445 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:16:54,445 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:16:54,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:16:54,446 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:16:54,446 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 09:16:54,446 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 09:16:54,447 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:16:54,447 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:16:54,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:16:54,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:16:54,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:16:54,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:16:54,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:16:54,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:16:54,449 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 09:16:54,449 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 09:16:54,450 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:16:54,450 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 09:16:54,450 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1ea7ddff382751fa0e11562333bdb4981cac7bdbf1d356a007804e7e2e5a289 [2021-10-28 09:16:54,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:16:54,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:16:54,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:16:54,920 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:16:54,921 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:16:54,923 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/list-properties/list_search-2.i [2021-10-28 09:16:55,019 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/data/cbdfd7735/bd6e0003c69f423eb94b5de4d755dda7/FLAG5bcd54cf1 [2021-10-28 09:16:55,779 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:16:55,780 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/sv-benchmarks/c/list-properties/list_search-2.i [2021-10-28 09:16:55,802 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/data/cbdfd7735/bd6e0003c69f423eb94b5de4d755dda7/FLAG5bcd54cf1 [2021-10-28 09:16:55,936 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/data/cbdfd7735/bd6e0003c69f423eb94b5de4d755dda7 [2021-10-28 09:16:55,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:16:55,944 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:16:55,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:16:55,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:16:55,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:16:55,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:16:55" (1/1) ... [2021-10-28 09:16:55,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@506bfd5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:55, skipping insertion in model container [2021-10-28 09:16:55,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:16:55" (1/1) ... [2021-10-28 09:16:55,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:16:56,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:16:56,335 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/sv-benchmarks/c/list-properties/list_search-2.i[813,826] [2021-10-28 09:16:56,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:16:56,889 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-28 09:16:56,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:16:56,918 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/sv-benchmarks/c/list-properties/list_search-2.i[813,826] [2021-10-28 09:16:56,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:16:57,003 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:16:57,030 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/sv-benchmarks/c/list-properties/list_search-2.i[813,826] [2021-10-28 09:16:57,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:16:57,183 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:16:57,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:57 WrapperNode [2021-10-28 09:16:57,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:16:57,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:16:57,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:16:57,186 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:16:57,200 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:57" (1/1) ... [2021-10-28 09:16:57,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:57" (1/1) ... [2021-10-28 09:16:57,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:57" (1/1) ... [2021-10-28 09:16:57,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:57" (1/1) ... [2021-10-28 09:16:57,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:57" (1/1) ... [2021-10-28 09:16:57,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:57" (1/1) ... [2021-10-28 09:16:57,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:57" (1/1) ... [2021-10-28 09:16:57,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:16:57,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:16:57,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:16:57,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:16:57,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:57" (1/1) ... [2021-10-28 09:16:57,328 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:16:57,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:16:57,358 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:16:57,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:16:57,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:16:57,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:16:57,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 09:16:57,425 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 09:16:57,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-10-28 09:16:57,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 09:16:57,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 09:16:57,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 09:16:57,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 09:16:57,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 09:16:57,427 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2021-10-28 09:16:57,428 INFO L138 BoogieDeclarations]: Found implementation of procedure delete_list [2021-10-28 09:16:57,429 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2021-10-28 09:16:57,429 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:16:57,429 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 09:16:57,430 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 09:16:57,430 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 09:16:57,430 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 09:16:57,431 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 09:16:57,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:16:57,431 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-10-28 09:16:57,432 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2021-10-28 09:16:57,432 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2021-10-28 09:16:57,432 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2021-10-28 09:16:57,432 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2021-10-28 09:16:57,433 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2021-10-28 09:16:57,433 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2021-10-28 09:16:57,433 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2021-10-28 09:16:57,433 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2021-10-28 09:16:57,434 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2021-10-28 09:16:57,434 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2021-10-28 09:16:57,434 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2021-10-28 09:16:57,435 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2021-10-28 09:16:57,435 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2021-10-28 09:16:57,435 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2021-10-28 09:16:57,435 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2021-10-28 09:16:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2021-10-28 09:16:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2021-10-28 09:16:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2021-10-28 09:16:57,437 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2021-10-28 09:16:57,437 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2021-10-28 09:16:57,438 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2021-10-28 09:16:57,438 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2021-10-28 09:16:57,439 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2021-10-28 09:16:57,440 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2021-10-28 09:16:57,440 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2021-10-28 09:16:57,440 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2021-10-28 09:16:57,440 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2021-10-28 09:16:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2021-10-28 09:16:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-10-28 09:16:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2021-10-28 09:16:57,442 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2021-10-28 09:16:57,442 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2021-10-28 09:16:57,443 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2021-10-28 09:16:57,443 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2021-10-28 09:16:57,443 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2021-10-28 09:16:57,444 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2021-10-28 09:16:57,444 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2021-10-28 09:16:57,444 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2021-10-28 09:16:57,445 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-10-28 09:16:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2021-10-28 09:16:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2021-10-28 09:16:57,449 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2021-10-28 09:16:57,449 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2021-10-28 09:16:57,450 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2021-10-28 09:16:57,450 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2021-10-28 09:16:57,450 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2021-10-28 09:16:57,451 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2021-10-28 09:16:57,451 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2021-10-28 09:16:57,451 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2021-10-28 09:16:57,452 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2021-10-28 09:16:57,452 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2021-10-28 09:16:57,452 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2021-10-28 09:16:57,452 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2021-10-28 09:16:57,453 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2021-10-28 09:16:57,453 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2021-10-28 09:16:57,454 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2021-10-28 09:16:57,455 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2021-10-28 09:16:57,455 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2021-10-28 09:16:57,455 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2021-10-28 09:16:57,455 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2021-10-28 09:16:57,456 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2021-10-28 09:16:57,456 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2021-10-28 09:16:57,456 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2021-10-28 09:16:57,457 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2021-10-28 09:16:57,457 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2021-10-28 09:16:57,457 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2021-10-28 09:16:57,457 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2021-10-28 09:16:57,458 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2021-10-28 09:16:57,458 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2021-10-28 09:16:57,458 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2021-10-28 09:16:57,458 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2021-10-28 09:16:57,459 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2021-10-28 09:16:57,459 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-10-28 09:16:57,459 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2021-10-28 09:16:57,460 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2021-10-28 09:16:57,460 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2021-10-28 09:16:57,460 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2021-10-28 09:16:57,461 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2021-10-28 09:16:57,461 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2021-10-28 09:16:57,461 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2021-10-28 09:16:57,462 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2021-10-28 09:16:57,463 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2021-10-28 09:16:57,464 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2021-10-28 09:16:57,464 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2021-10-28 09:16:57,464 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2021-10-28 09:16:57,464 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2021-10-28 09:16:57,465 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2021-10-28 09:16:57,465 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2021-10-28 09:16:57,465 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2021-10-28 09:16:57,465 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2021-10-28 09:16:57,466 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2021-10-28 09:16:57,466 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2021-10-28 09:16:57,466 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2021-10-28 09:16:57,466 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2021-10-28 09:16:57,467 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2021-10-28 09:16:57,467 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2021-10-28 09:16:57,468 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2021-10-28 09:16:57,468 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2021-10-28 09:16:57,468 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2021-10-28 09:16:57,469 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2021-10-28 09:16:57,470 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 09:16:57,474 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 09:16:57,474 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 09:16:57,476 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 09:16:57,476 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 09:16:57,476 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 09:16:57,478 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 09:16:57,478 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 09:16:57,478 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 09:16:57,479 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 09:16:57,485 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 09:16:57,486 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 09:16:57,486 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 09:16:57,486 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 09:16:57,487 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 09:16:57,487 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 09:16:57,487 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 09:16:57,487 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 09:16:57,488 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 09:16:57,488 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 09:16:57,488 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 09:16:57,488 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 09:16:57,489 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 09:16:57,489 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 09:16:57,489 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 09:16:57,489 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 09:16:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 09:16:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 09:16:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 09:16:57,490 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 09:16:57,491 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 09:16:57,491 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 09:16:57,491 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 09:16:57,491 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 09:16:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 09:16:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 09:16:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 09:16:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 09:16:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 09:16:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 09:16:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 09:16:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 09:16:57,494 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 09:16:57,494 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 09:16:57,494 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 09:16:57,494 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 09:16:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 09:16:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 09:16:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 09:16:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 09:16:57,496 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 09:16:57,496 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 09:16:57,496 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 09:16:57,496 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 09:16:57,497 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 09:16:57,497 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 09:16:57,497 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 09:16:57,497 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 09:16:57,498 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 09:16:57,498 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 09:16:57,498 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 09:16:57,498 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 09:16:57,499 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 09:16:57,499 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 09:16:57,499 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 09:16:57,499 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 09:16:57,500 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 09:16:57,500 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 09:16:57,500 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 09:16:57,500 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 09:16:57,501 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 09:16:57,501 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 09:16:57,501 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 09:16:57,501 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 09:16:57,502 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 09:16:57,502 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 09:16:57,502 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 09:16:57,502 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 09:16:57,503 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 09:16:57,503 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 09:16:57,503 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 09:16:57,503 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 09:16:57,504 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 09:16:57,504 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 09:16:57,504 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 09:16:57,504 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 09:16:57,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 09:16:57,505 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 09:16:57,505 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 09:16:57,505 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 09:16:57,506 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 09:16:57,506 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 09:16:57,506 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 09:16:57,506 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 09:16:57,507 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 09:16:57,507 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 09:16:57,507 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 09:16:57,507 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 09:16:57,508 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 09:16:57,508 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 09:16:57,508 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 09:16:57,508 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 09:16:57,509 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 09:16:57,509 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 09:16:57,509 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 09:16:57,509 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 09:16:57,510 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2021-10-28 09:16:57,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 09:16:57,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 09:16:57,510 INFO L130 BoogieDeclarations]: Found specification of procedure delete_list [2021-10-28 09:16:57,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 09:16:57,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:16:57,511 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2021-10-28 09:16:57,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:16:57,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 09:16:57,512 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:16:57,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:16:57,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 09:16:57,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:16:57,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 09:16:57,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-28 09:16:57,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-28 09:16:58,732 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:16:58,732 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-28 09:16:58,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:16:58 BoogieIcfgContainer [2021-10-28 09:16:58,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:16:58,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:16:58,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:16:58,742 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:16:58,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:16:55" (1/3) ... [2021-10-28 09:16:58,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@101aea2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:16:58, skipping insertion in model container [2021-10-28 09:16:58,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:57" (2/3) ... [2021-10-28 09:16:58,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@101aea2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:16:58, skipping insertion in model container [2021-10-28 09:16:58,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:16:58" (3/3) ... [2021-10-28 09:16:58,746 INFO L111 eAbstractionObserver]: Analyzing ICFG list_search-2.i [2021-10-28 09:16:58,753 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:16:58,754 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 33 error locations. [2021-10-28 09:16:58,815 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:16:58,823 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 [2021-10-28 09:16:58,827 INFO L340 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2021-10-28 09:16:58,854 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 57 states have (on average 1.7894736842105263) internal successors, (102), 90 states have internal predecessors, (102), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-10-28 09:16:58,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 09:16:58,898 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:16:58,899 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:16:58,900 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting insert_listErr0REQUIRES_VIOLATION === [search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION (and 29 more)] === [2021-10-28 09:16:58,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:58,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1929349250, now seen corresponding path program 1 times [2021-10-28 09:16:58,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:16:58,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478057888] [2021-10-28 09:16:58,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:58,925 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:16:58,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:16:58,932 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:16:58,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 09:16:59,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:59,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:16:59,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:16:59,391 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 [2021-10-28 09:16:59,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:59,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:16:59,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:59,525 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:16:59,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478057888] [2021-10-28 09:16:59,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1478057888] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:59,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:59,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 09:16:59,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392942531] [2021-10-28 09:16:59,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:16:59,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:16:59,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:16:59,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:16:59,565 INFO L87 Difference]: Start difference. First operand has 106 states, 57 states have (on average 1.7894736842105263) internal successors, (102), 90 states have internal predecessors, (102), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:16:59,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:16:59,815 INFO L93 Difference]: Finished difference Result 102 states and 111 transitions. [2021-10-28 09:16:59,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:16:59,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-28 09:16:59,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:16:59,832 INFO L225 Difference]: With dead ends: 102 [2021-10-28 09:16:59,832 INFO L226 Difference]: Without dead ends: 99 [2021-10-28 09:16:59,834 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:16:59,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-10-28 09:16:59,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-10-28 09:16:59,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 56 states have (on average 1.625) internal successors, (91), 84 states have internal predecessors, (91), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-10-28 09:16:59,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 108 transitions. [2021-10-28 09:16:59,931 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 108 transitions. Word has length 10 [2021-10-28 09:16:59,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:16:59,932 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 108 transitions. [2021-10-28 09:16:59,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:16:59,933 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 108 transitions. [2021-10-28 09:16:59,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 09:16:59,934 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:16:59,934 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:16:59,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:00,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:17:00,149 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting insert_listErr1REQUIRES_VIOLATION === [search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION (and 29 more)] === [2021-10-28 09:17:00,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:00,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1929349251, now seen corresponding path program 1 times [2021-10-28 09:17:00,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:17:00,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410199024] [2021-10-28 09:17:00,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:00,152 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:17:00,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:17:00,153 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:17:00,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 09:17:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:00,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:17:00,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:17:00,464 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 [2021-10-28 09:17:00,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:17:00,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:17:00,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:17:00,640 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:17:00,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [410199024] [2021-10-28 09:17:00,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [410199024] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:17:00,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:17:00,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-28 09:17:00,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130655558] [2021-10-28 09:17:00,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:17:00,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:17:00,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:17:00,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:17:00,649 INFO L87 Difference]: Start difference. First operand 99 states and 108 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:17:01,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:17:01,077 INFO L93 Difference]: Finished difference Result 95 states and 104 transitions. [2021-10-28 09:17:01,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:17:01,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-28 09:17:01,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:17:01,083 INFO L225 Difference]: With dead ends: 95 [2021-10-28 09:17:01,083 INFO L226 Difference]: Without dead ends: 95 [2021-10-28 09:17:01,084 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:17:01,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-10-28 09:17:01,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-10-28 09:17:01,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 56 states have (on average 1.5535714285714286) internal successors, (87), 80 states have internal predecessors, (87), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-10-28 09:17:01,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 104 transitions. [2021-10-28 09:17:01,110 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 104 transitions. Word has length 10 [2021-10-28 09:17:01,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:17:01,111 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 104 transitions. [2021-10-28 09:17:01,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:17:01,112 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 104 transitions. [2021-10-28 09:17:01,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-28 09:17:01,114 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:17:01,115 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:17:01,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:01,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:17:01,330 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0REQUIRES_VIOLATION === [search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION (and 29 more)] === [2021-10-28 09:17:01,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:01,331 INFO L85 PathProgramCache]: Analyzing trace with hash -841914658, now seen corresponding path program 1 times [2021-10-28 09:17:01,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:17:01,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1339663079] [2021-10-28 09:17:01,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:01,334 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:17:01,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:17:01,345 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:17:01,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 09:17:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:01,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:17:01,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:17:01,976 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-28 09:17:01,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:17:02,234 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 1 proven. 32 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-28 09:17:02,234 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:17:02,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1339663079] [2021-10-28 09:17:02,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1339663079] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 09:17:02,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:17:02,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-10-28 09:17:02,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131773804] [2021-10-28 09:17:02,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:17:02,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:17:02,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:17:02,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:17:02,247 INFO L87 Difference]: Start difference. First operand 95 states and 104 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-10-28 09:17:02,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:17:02,753 INFO L93 Difference]: Finished difference Result 165 states and 182 transitions. [2021-10-28 09:17:02,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:17:02,754 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 44 [2021-10-28 09:17:02,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:17:02,757 INFO L225 Difference]: With dead ends: 165 [2021-10-28 09:17:02,757 INFO L226 Difference]: Without dead ends: 165 [2021-10-28 09:17:02,757 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:17:02,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-10-28 09:17:02,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 100. [2021-10-28 09:17:02,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 60 states have (on average 1.5166666666666666) internal successors, (91), 84 states have internal predecessors, (91), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2021-10-28 09:17:02,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 109 transitions. [2021-10-28 09:17:02,775 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 109 transitions. Word has length 44 [2021-10-28 09:17:02,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:17:02,775 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 109 transitions. [2021-10-28 09:17:02,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-10-28 09:17:02,776 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 109 transitions. [2021-10-28 09:17:02,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-28 09:17:02,778 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:17:02,778 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:17:02,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:02,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:17:02,995 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0REQUIRES_VIOLATION === [search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION (and 29 more)] === [2021-10-28 09:17:02,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:02,995 INFO L85 PathProgramCache]: Analyzing trace with hash 124950246, now seen corresponding path program 1 times [2021-10-28 09:17:02,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:17:02,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1565732214] [2021-10-28 09:17:02,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:02,997 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:17:02,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:17:02,998 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:17:03,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 09:17:03,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:03,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:17:03,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:17:03,525 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 [2021-10-28 09:17:03,592 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-28 09:17:03,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:17:03,778 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-28 09:17:03,778 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:17:03,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1565732214] [2021-10-28 09:17:03,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1565732214] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:17:03,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:17:03,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 09:17:03,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173841044] [2021-10-28 09:17:03,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:17:03,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:17:03,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:17:03,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:17:03,781 INFO L87 Difference]: Start difference. First operand 100 states and 109 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 09:17:04,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:17:04,229 INFO L93 Difference]: Finished difference Result 127 states and 140 transitions. [2021-10-28 09:17:04,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:17:04,230 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 44 [2021-10-28 09:17:04,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:17:04,234 INFO L225 Difference]: With dead ends: 127 [2021-10-28 09:17:04,234 INFO L226 Difference]: Without dead ends: 127 [2021-10-28 09:17:04,234 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:17:04,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-28 09:17:04,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 102. [2021-10-28 09:17:04,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 62 states have (on average 1.532258064516129) internal successors, (95), 86 states have internal predecessors, (95), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2021-10-28 09:17:04,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 113 transitions. [2021-10-28 09:17:04,250 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 113 transitions. Word has length 44 [2021-10-28 09:17:04,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:17:04,251 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 113 transitions. [2021-10-28 09:17:04,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 09:17:04,251 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 113 transitions. [2021-10-28 09:17:04,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-28 09:17:04,253 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:17:04,253 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:17:04,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:04,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:17:04,472 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr1REQUIRES_VIOLATION === [search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION (and 29 more)] === [2021-10-28 09:17:04,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:04,472 INFO L85 PathProgramCache]: Analyzing trace with hash 124950247, now seen corresponding path program 1 times [2021-10-28 09:17:04,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:17:04,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668449460] [2021-10-28 09:17:04,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:04,473 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:17:04,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:17:04,474 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:17:04,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 09:17:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:04,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:17:04,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:17:04,999 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 [2021-10-28 09:17:05,157 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-28 09:17:05,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:17:05,653 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-28 09:17:05,654 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:17:05,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668449460] [2021-10-28 09:17:05,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668449460] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:17:05,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:17:05,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-28 09:17:05,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174498832] [2021-10-28 09:17:05,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:17:05,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:17:05,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:17:05,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:17:05,657 INFO L87 Difference]: Start difference. First operand 102 states and 113 transitions. Second operand has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-28 09:17:06,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:17:06,621 INFO L93 Difference]: Finished difference Result 147 states and 161 transitions. [2021-10-28 09:17:06,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:17:06,622 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 44 [2021-10-28 09:17:06,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:17:06,624 INFO L225 Difference]: With dead ends: 147 [2021-10-28 09:17:06,625 INFO L226 Difference]: Without dead ends: 147 [2021-10-28 09:17:06,625 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:17:06,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-10-28 09:17:06,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 113. [2021-10-28 09:17:06,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 72 states have (on average 1.5694444444444444) internal successors, (113), 96 states have internal predecessors, (113), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2021-10-28 09:17:06,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 132 transitions. [2021-10-28 09:17:06,637 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 132 transitions. Word has length 44 [2021-10-28 09:17:06,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:17:06,638 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 132 transitions. [2021-10-28 09:17:06,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-28 09:17:06,638 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 132 transitions. [2021-10-28 09:17:06,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-28 09:17:06,640 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:17:06,641 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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] [2021-10-28 09:17:06,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-28 09:17:06,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:17:06,857 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting search_listErr0REQUIRES_VIOLATION === [search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION (and 29 more)] === [2021-10-28 09:17:06,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:06,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1335329181, now seen corresponding path program 1 times [2021-10-28 09:17:06,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:17:06,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593890681] [2021-10-28 09:17:06,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:06,859 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:17:06,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:17:06,860 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:17:06,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 09:17:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:07,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:17:07,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:17:07,374 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-28 09:17:07,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:17:07,552 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-28 09:17:07,552 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:17:07,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [593890681] [2021-10-28 09:17:07,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [593890681] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:17:07,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:17:07,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-28 09:17:07,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930379026] [2021-10-28 09:17:07,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:17:07,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:17:07,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:17:07,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:17:07,556 INFO L87 Difference]: Start difference. First operand 113 states and 132 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 09:17:07,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:17:07,777 INFO L93 Difference]: Finished difference Result 134 states and 143 transitions. [2021-10-28 09:17:07,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:17:07,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 48 [2021-10-28 09:17:07,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:17:07,780 INFO L225 Difference]: With dead ends: 134 [2021-10-28 09:17:07,781 INFO L226 Difference]: Without dead ends: 134 [2021-10-28 09:17:07,781 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:17:07,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-28 09:17:07,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 113. [2021-10-28 09:17:07,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 72 states have (on average 1.5416666666666667) internal successors, (111), 96 states have internal predecessors, (111), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2021-10-28 09:17:07,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 130 transitions. [2021-10-28 09:17:07,790 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 130 transitions. Word has length 48 [2021-10-28 09:17:07,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:17:07,791 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 130 transitions. [2021-10-28 09:17:07,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 09:17:07,791 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 130 transitions. [2021-10-28 09:17:07,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-28 09:17:07,793 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:17:07,794 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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] [2021-10-28 09:17:07,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:08,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:17:08,010 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0REQUIRES_VIOLATION === [search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION (and 29 more)] === [2021-10-28 09:17:08,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:08,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1343794684, now seen corresponding path program 1 times [2021-10-28 09:17:08,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:17:08,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [541708774] [2021-10-28 09:17:08,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:08,011 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:17:08,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:17:08,013 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:17:08,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 09:17:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:08,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 09:17:08,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:17:08,608 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 [2021-10-28 09:17:08,828 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 13 treesize of output 9 [2021-10-28 09:17:09,005 INFO L354 Elim1Store]: treesize reduction 33, result has 43.1 percent of original size [2021-10-28 09:17:09,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 41 [2021-10-28 09:17:09,260 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 48 treesize of output 36 [2021-10-28 09:17:09,465 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-28 09:17:09,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:17:25,608 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-28 09:17:25,609 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:17:25,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [541708774] [2021-10-28 09:17:25,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [541708774] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 09:17:25,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:17:25,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-28 09:17:25,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651849386] [2021-10-28 09:17:25,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-28 09:17:25,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:17:25,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-28 09:17:25,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=384, Unknown=6, NotChecked=0, Total=462 [2021-10-28 09:17:25,613 INFO L87 Difference]: Start difference. First operand 113 states and 130 transitions. Second operand has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-10-28 09:17:39,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:17:39,292 INFO L93 Difference]: Finished difference Result 144 states and 159 transitions. [2021-10-28 09:17:39,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-28 09:17:39,293 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 47 [2021-10-28 09:17:39,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:17:39,295 INFO L225 Difference]: With dead ends: 144 [2021-10-28 09:17:39,296 INFO L226 Difference]: Without dead ends: 144 [2021-10-28 09:17:39,297 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=232, Invalid=952, Unknown=6, NotChecked=0, Total=1190 [2021-10-28 09:17:39,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-28 09:17:39,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2021-10-28 09:17:39,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 77 states have (on average 1.5324675324675325) internal successors, (118), 101 states have internal predecessors, (118), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-10-28 09:17:39,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2021-10-28 09:17:39,308 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 47 [2021-10-28 09:17:39,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:17:39,326 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2021-10-28 09:17:39,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-10-28 09:17:39,327 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2021-10-28 09:17:39,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-28 09:17:39,329 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:17:39,330 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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] [2021-10-28 09:17:39,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:39,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:17:39,537 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr1REQUIRES_VIOLATION === [search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION (and 29 more)] === [2021-10-28 09:17:39,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:39,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1343794683, now seen corresponding path program 1 times [2021-10-28 09:17:39,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:17:39,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587051704] [2021-10-28 09:17:39,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:39,539 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:17:39,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:17:39,540 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:17:39,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-28 09:17:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:40,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-28 09:17:40,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:17:40,158 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 [2021-10-28 09:17:40,166 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 [2021-10-28 09:17:40,548 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 13 treesize of output 9 [2021-10-28 09:17:40,569 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 13 treesize of output 9 [2021-10-28 09:17:40,817 INFO L354 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-10-28 09:17:40,818 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 22 treesize of output 22 [2021-10-28 09:17:40,835 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 18 treesize of output 20 [2021-10-28 09:17:41,035 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 44 treesize of output 32 [2021-10-28 09:17:41,040 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 29 treesize of output 21 [2021-10-28 09:17:41,243 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-28 09:17:41,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:17:52,785 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_~head~0.base_133 (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| v_~head~0.base_133))))))) (let ((.cse0 (bvadd (_ bv8 32) |c_old(~head~0.offset)|))) (or (not (bvule .cse0 (select (store |c_old(#length)| v_~head~0.base_133 (_ bv8 32)) |c_old(~head~0.base)|))) (not (bvule (bvadd (_ bv4 32) |c_old(~head~0.offset)|) .cse0)))))) (forall ((v_insert_list_~l.base_88 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_insert_list_~l.base_88))))))) (let ((.cse1 (bvadd (_ bv8 32) c_~head~0.offset))) (and (bvule .cse1 (select (store |c_#length| v_insert_list_~l.base_88 (_ bv8 32)) c_~head~0.base)) (bvule (bvadd (_ bv4 32) c_~head~0.offset) .cse1)))))) is different from true [2021-10-28 09:17:54,444 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-28 09:17:54,445 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:17:54,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587051704] [2021-10-28 09:17:54,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587051704] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 09:17:54,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:17:54,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-28 09:17:54,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535555639] [2021-10-28 09:17:54,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-28 09:17:54,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:17:54,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-28 09:17:54,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=360, Unknown=3, NotChecked=38, Total=462 [2021-10-28 09:17:54,448 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-10-28 09:18:25,247 WARN L207 SmtUtils]: Spent 12.29 s on a formula simplification that was a NOOP. DAG size: 48 [2021-10-28 09:18:41,887 WARN L207 SmtUtils]: Spent 14.29 s on a formula simplification that was a NOOP. DAG size: 61 [2021-10-28 09:18:57,981 WARN L207 SmtUtils]: Spent 12.36 s on a formula simplification that was a NOOP. DAG size: 55 [2021-10-28 09:19:01,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:19:01,261 INFO L93 Difference]: Finished difference Result 154 states and 169 transitions. [2021-10-28 09:19:01,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-28 09:19:01,263 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 47 [2021-10-28 09:19:01,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:19:01,265 INFO L225 Difference]: With dead ends: 154 [2021-10-28 09:19:01,265 INFO L226 Difference]: Without dead ends: 154 [2021-10-28 09:19:01,266 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 57.1s TimeCoverageRelationStatistics Valid=297, Invalid=1344, Unknown=3, NotChecked=78, Total=1722 [2021-10-28 09:19:01,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-28 09:19:01,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 118. [2021-10-28 09:19:01,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 77 states have (on average 1.5194805194805194) internal successors, (117), 101 states have internal predecessors, (117), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-10-28 09:19:01,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 135 transitions. [2021-10-28 09:19:01,276 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 135 transitions. Word has length 47 [2021-10-28 09:19:01,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:19:01,277 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 135 transitions. [2021-10-28 09:19:01,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-10-28 09:19:01,278 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 135 transitions. [2021-10-28 09:19:01,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-28 09:19:01,281 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:19:01,281 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:01,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:19:01,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:19:01,488 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting search_listErr0REQUIRES_VIOLATION === [search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION (and 29 more)] === [2021-10-28 09:19:01,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:01,489 INFO L85 PathProgramCache]: Analyzing trace with hash -354583109, now seen corresponding path program 1 times [2021-10-28 09:19:01,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:19:01,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116857412] [2021-10-28 09:19:01,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:19:01,489 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:19:01,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:19:01,490 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:19:01,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-28 09:19:01,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:19:01,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 09:19:01,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:19:02,135 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 13 treesize of output 9 [2021-10-28 09:19:02,361 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 16 treesize of output 8 [2021-10-28 09:19:02,446 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-28 09:19:02,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:19:03,069 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-28 09:19:03,069 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:19:03,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116857412] [2021-10-28 09:19:03,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1116857412] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 09:19:03,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:19:03,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 17 [2021-10-28 09:19:03,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313620773] [2021-10-28 09:19:03,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-28 09:19:03,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:19:03,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-28 09:19:03,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-10-28 09:19:03,071 INFO L87 Difference]: Start difference. First operand 118 states and 135 transitions. Second operand has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 14 states have internal predecessors, (45), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-28 09:19:05,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:19:05,549 INFO L93 Difference]: Finished difference Result 146 states and 155 transitions. [2021-10-28 09:19:05,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-28 09:19:05,550 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 14 states have internal predecessors, (45), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 51 [2021-10-28 09:19:05,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:19:05,552 INFO L225 Difference]: With dead ends: 146 [2021-10-28 09:19:05,552 INFO L226 Difference]: Without dead ends: 146 [2021-10-28 09:19:05,554 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=241, Invalid=1019, Unknown=0, NotChecked=0, Total=1260 [2021-10-28 09:19:05,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-28 09:19:05,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 118. [2021-10-28 09:19:05,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 77 states have (on average 1.5064935064935066) internal successors, (116), 101 states have internal predecessors, (116), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-10-28 09:19:05,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 134 transitions. [2021-10-28 09:19:05,561 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 134 transitions. Word has length 51 [2021-10-28 09:19:05,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:19:05,562 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 134 transitions. [2021-10-28 09:19:05,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 14 states have internal predecessors, (45), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-28 09:19:05,562 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 134 transitions. [2021-10-28 09:19:05,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-28 09:19:05,564 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:19:05,564 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:19:05,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-28 09:19:05,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:19:05,780 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0REQUIRES_VIOLATION === [search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION (and 29 more)] === [2021-10-28 09:19:05,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:19:05,780 INFO L85 PathProgramCache]: Analyzing trace with hash 402807334, now seen corresponding path program 2 times [2021-10-28 09:19:05,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:19:05,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986442056] [2021-10-28 09:19:05,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:19:05,781 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:19:05,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:19:05,782 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:19:05,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-28 09:19:06,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:19:06,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:19:06,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-28 09:19:06,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:19:06,441 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 [2021-10-28 09:19:06,671 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 13 treesize of output 9 [2021-10-28 09:19:06,840 INFO L354 Elim1Store]: treesize reduction 33, result has 43.1 percent of original size [2021-10-28 09:19:06,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 42 [2021-10-28 09:19:07,382 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 13 treesize of output 9 [2021-10-28 09:19:11,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:19:11,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:19:11,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:19:11,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:19:11,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:19:11,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:19:11,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:19:11,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:19:11,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:19:11,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:19:11,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:19:11,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:19:11,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:19:11,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:19:11,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:19:11,765 INFO L354 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2021-10-28 09:19:11,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 14 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 102 [2021-10-28 09:19:11,827 INFO L354 Elim1Store]: treesize reduction 144, result has 30.4 percent of original size [2021-10-28 09:19:11,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 92 treesize of output 123 [2021-10-28 09:19:12,343 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 125 treesize of output 105 [2021-10-28 09:19:13,025 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 09:19:13,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 71 [2021-10-28 09:19:13,604 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 35 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:19:13,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:19:17,287 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_~head~0.base_175 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_~head~0.base_175 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_~head~0.base_175 (store (store (store (store (store (select |c_#memory_$Pointer$.base| v_~head~0.base_175) (_ bv0 32) v_DerPreprocessor_5) (_ bv1 32) v_DerPreprocessor_6) (_ bv2 32) v_DerPreprocessor_7) (_ bv3 32) v_DerPreprocessor_8) (_ bv4 32) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset)))))))))))) (_ bv1 1))) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_~head~0.base_175)))))) is different from false [2021-10-28 09:19:19,364 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_~head~0.base_175 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (select |c_old(#valid)| v_~head~0.base_175))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_175 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_175 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_175) (_ bv0 32) v_DerPreprocessor_5) (_ bv1 32) v_DerPreprocessor_6) (_ bv2 32) v_DerPreprocessor_7) (_ bv3 32) v_DerPreprocessor_8) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|)))))))))))))) (_ bv1 1)))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvadd (_ bv4 32) c_~head~0.offset))) (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| c_~head~0.base) .cse0)) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$.offset| c_~head~0.base) .cse0)))))))) (_ bv1 1)))) is different from true [2021-10-28 09:19:21,483 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_~head~0.base_175 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (select |c_old(#valid)| v_~head~0.base_175))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_175 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_175 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_175) (_ bv0 32) v_DerPreprocessor_5) (_ bv1 32) v_DerPreprocessor_6) (_ bv2 32) v_DerPreprocessor_7) (_ bv3 32) v_DerPreprocessor_8) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|)))))))))))))) (_ bv1 1)))))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvadd (_ bv4 32) c_insert_list_~l.offset))) (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| c_insert_list_~l.base) .cse0)) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$.offset| c_insert_list_~l.base) .cse0))))))))))) is different from true [2021-10-28 09:19:23,552 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_~head~0.base_175 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (select |c_old(#valid)| v_~head~0.base_175))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_175 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_175 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_175) (_ bv0 32) v_DerPreprocessor_5) (_ bv1 32) v_DerPreprocessor_6) (_ bv2 32) v_DerPreprocessor_7) (_ bv3 32) v_DerPreprocessor_8) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|)))))))))))))) (_ bv1 1)))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| c_insert_list_~l.base (store (select |c_#memory_$Pointer$.base| c_insert_list_~l.base) (bvadd (_ bv4 32) c_insert_list_~l.offset) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset))))))) (_ bv1 1)))) is different from true [2021-10-28 09:19:25,701 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_~head~0.base_175 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (select |c_old(#valid)| v_~head~0.base_175))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_175 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_175 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_175) (_ bv0 32) v_DerPreprocessor_5) (_ bv1 32) v_DerPreprocessor_6) (_ bv2 32) v_DerPreprocessor_7) (_ bv3 32) v_DerPreprocessor_8) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|)))))))))))))) (_ bv1 1)))))) (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| c_insert_list_~l.base (store (store (store (store (store (select |c_#memory_$Pointer$.base| c_insert_list_~l.base) c_insert_list_~l.offset v_DerPreprocessor_9) (bvadd (_ bv1 32) c_insert_list_~l.offset) v_DerPreprocessor_10) (bvadd (_ bv2 32) c_insert_list_~l.offset) v_DerPreprocessor_11) (bvadd (_ bv3 32) c_insert_list_~l.offset) v_DerPreprocessor_12) (bvadd (_ bv4 32) c_insert_list_~l.offset) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset)))))))))) (_ bv1 1))))) is different from true [2021-10-28 09:19:27,877 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_~head~0.base_175 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (select |c_old(#valid)| v_~head~0.base_175))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_175 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_175 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_175) (_ bv0 32) v_DerPreprocessor_5) (_ bv1 32) v_DerPreprocessor_6) (_ bv2 32) v_DerPreprocessor_7) (_ bv3 32) v_DerPreprocessor_8) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|)))))))))))))) (_ bv1 1)))))) (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_insert_list_~l.base_116 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_insert_list_~l.base_116))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_insert_list_~l.base_116 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_insert_list_~l.base_116 (store (store (store (store (store (select |c_#memory_$Pointer$.base| v_insert_list_~l.base_116) (_ bv0 32) v_DerPreprocessor_9) (_ bv1 32) v_DerPreprocessor_10) (_ bv2 32) v_DerPreprocessor_11) (_ bv3 32) v_DerPreprocessor_12) (_ bv4 32) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset)))))))))))) (_ bv1 1)))))) is different from true [2021-10-28 09:19:46,009 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:19:46,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986442056] [2021-10-28 09:19:46,010 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-28 09:19:46,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [389263634] [2021-10-28 09:19:46,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:19:46,011 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-28 09:19:46,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/cvc4 [2021-10-28 09:19:46,016 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-28 09:19:46,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-10-28 09:19:46,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:19:46,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:19:46,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-28 09:19:46,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:19:46,870 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 [2021-10-28 09:19:47,001 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 13 treesize of output 9 [2021-10-28 09:19:47,112 INFO L354 Elim1Store]: treesize reduction 33, result has 43.1 percent of original size [2021-10-28 09:19:47,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 43 [2021-10-28 09:19:47,444 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 13 treesize of output 9 [2021-10-28 09:19:47,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:19:47,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:19:47,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:19:47,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:19:47,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:19:47,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:19:47,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:19:47,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:19:47,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:19:47,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:19:47,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:19:47,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:19:47,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:19:47,690 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:19:47,724 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-10-28 09:19:47,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 14 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 100 [2021-10-28 09:19:47,828 INFO L354 Elim1Store]: treesize reduction 112, result has 29.6 percent of original size [2021-10-28 09:19:47,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 82 treesize of output 105 [2021-10-28 09:19:48,147 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 125 treesize of output 105 [2021-10-28 09:19:48,756 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 09:19:48,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 71 [2021-10-28 09:19:49,161 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 35 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:19:49,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:19:52,552 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (v_~head~0.base_189 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_~head~0.base_189))))))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_~head~0.base_189 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_~head~0.base_189 (store (store (store (store (store (select |c_#memory_$Pointer$.base| v_~head~0.base_189) (_ bv0 32) v_DerPreprocessor_17) (_ bv1 32) v_DerPreprocessor_18) (_ bv2 32) v_DerPreprocessor_19) (_ bv3 32) v_DerPreprocessor_20) (_ bv4 32) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset))))))))))) is different from false [2021-10-28 09:19:54,618 WARN L860 $PredicateComparison]: unable to prove that (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvadd (_ bv4 32) c_~head~0.offset))) (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| c_~head~0.base) .cse0)) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$.offset| c_~head~0.base) .cse0)))))))) (_ bv1 1))) (exists ((v_DerPreprocessor_19 (_ BitVec 32)) (v_~head~0.base_189 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (and (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_189 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_189 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_189) (_ bv0 32) v_DerPreprocessor_17) (_ bv1 32) v_DerPreprocessor_18) (_ bv2 32) v_DerPreprocessor_19) (_ bv3 32) v_DerPreprocessor_20) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|))))))))) (_ bv1 1)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| v_~head~0.base_189)))))))))) is different from true [2021-10-28 09:19:56,739 WARN L860 $PredicateComparison]: unable to prove that (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvadd (_ bv4 32) c_insert_list_~l.offset))) (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| c_insert_list_~l.base) .cse0)) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$.offset| c_insert_list_~l.base) .cse0))))))))) (_ bv1 1))) (exists ((v_DerPreprocessor_19 (_ BitVec 32)) (v_~head~0.base_189 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (and (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_189 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_189 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_189) (_ bv0 32) v_DerPreprocessor_17) (_ bv1 32) v_DerPreprocessor_18) (_ bv2 32) v_DerPreprocessor_19) (_ bv3 32) v_DerPreprocessor_20) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|))))))))) (_ bv1 1)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| v_~head~0.base_189)))))))))) is different from true [2021-10-28 09:19:58,846 WARN L860 $PredicateComparison]: unable to prove that (or (not (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| c_insert_list_~l.base)) (_ bv1 1)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| c_insert_list_~l.base (store (select |c_#memory_$Pointer$.base| c_insert_list_~l.base) (bvadd (_ bv4 32) c_insert_list_~l.offset) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset)))))))))) (_ bv1 1))) (exists ((v_DerPreprocessor_19 (_ BitVec 32)) (v_~head~0.base_189 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (and (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_189 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_189 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_189) (_ bv0 32) v_DerPreprocessor_17) (_ bv1 32) v_DerPreprocessor_18) (_ bv2 32) v_DerPreprocessor_19) (_ bv3 32) v_DerPreprocessor_20) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|))))))))) (_ bv1 1)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| v_~head~0.base_189)))))))))) is different from true [2021-10-28 09:20:00,971 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((v_DerPreprocessor_21 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| c_insert_list_~l.base (store (store (store (store (store (select |c_#memory_$Pointer$.base| c_insert_list_~l.base) c_insert_list_~l.offset v_DerPreprocessor_21) (bvadd (_ bv1 32) c_insert_list_~l.offset) v_DerPreprocessor_22) (bvadd (_ bv2 32) c_insert_list_~l.offset) v_DerPreprocessor_23) (bvadd (_ bv3 32) c_insert_list_~l.offset) v_DerPreprocessor_24) (bvadd (_ bv4 32) c_insert_list_~l.offset) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset))))))))))) (_ bv1 1)))) (not (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| c_insert_list_~l.base)) (_ bv1 1)))) (exists ((v_DerPreprocessor_19 (_ BitVec 32)) (v_~head~0.base_189 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (and (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_189 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_189 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_189) (_ bv0 32) v_DerPreprocessor_17) (_ bv1 32) v_DerPreprocessor_18) (_ bv2 32) v_DerPreprocessor_19) (_ bv3 32) v_DerPreprocessor_20) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|))))))))) (_ bv1 1)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| v_~head~0.base_189)))))))))) is different from true [2021-10-28 09:20:03,106 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((v_DerPreprocessor_21 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_insert_list_~l.base_123 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_insert_list_~l.base_123 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_insert_list_~l.base_123 (store (store (store (store (store (select |c_#memory_$Pointer$.base| v_insert_list_~l.base_123) (_ bv0 32) v_DerPreprocessor_21) (_ bv1 32) v_DerPreprocessor_22) (_ bv2 32) v_DerPreprocessor_23) (_ bv3 32) v_DerPreprocessor_24) (_ bv4 32) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset)))))))))))))))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_insert_list_~l.base_123))))))) (exists ((v_DerPreprocessor_19 (_ BitVec 32)) (v_~head~0.base_189 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (and (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_189 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_189 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_189) (_ bv0 32) v_DerPreprocessor_17) (_ bv1 32) v_DerPreprocessor_18) (_ bv2 32) v_DerPreprocessor_19) (_ bv3 32) v_DerPreprocessor_20) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|))))))))) (_ bv1 1)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| v_~head~0.base_189)))))))))) is different from true [2021-10-28 09:20:08,629 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-28 09:20:08,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524411943] [2021-10-28 09:20:08,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:20:08,630 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:20:08,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:20:08,639 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:20:08,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-28 09:20:09,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:20:09,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:20:09,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-28 09:20:09,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:20:09,401 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 13 treesize of output 9 [2021-10-28 09:20:09,495 INFO L354 Elim1Store]: treesize reduction 33, result has 43.1 percent of original size [2021-10-28 09:20:09,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 46 [2021-10-28 09:20:09,769 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 13 treesize of output 9 [2021-10-28 09:20:10,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:10,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:10,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:10,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:10,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:10,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:10,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:10,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:10,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:10,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:10,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:10,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:10,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:20:10,026 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:20:10,052 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-10-28 09:20:10,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 14 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 96 [2021-10-28 09:20:10,109 INFO L354 Elim1Store]: treesize reduction 112, result has 29.6 percent of original size [2021-10-28 09:20:10,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 78 treesize of output 101 [2021-10-28 09:20:10,424 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 125 treesize of output 105 [2021-10-28 09:20:11,051 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 09:20:11,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 71 [2021-10-28 09:20:11,488 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 34 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 09:20:11,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:20:14,583 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_~head~0.base_203 (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (v_DerPreprocessor_29 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_~head~0.base_203)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_~head~0.base_203 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_~head~0.base_203 (store (store (store (store (store (select |c_#memory_$Pointer$.base| v_~head~0.base_203) (_ bv0 32) v_DerPreprocessor_29) (_ bv1 32) v_DerPreprocessor_30) (_ bv2 32) v_DerPreprocessor_31) (_ bv3 32) v_DerPreprocessor_32) (_ bv4 32) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset))))))))) (_ bv1 1))))) is different from false [2021-10-28 09:20:16,656 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_~head~0.base_203 (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (v_DerPreprocessor_29 (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| v_~head~0.base_203)))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_203 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_203 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_203) (_ bv0 32) v_DerPreprocessor_29) (_ bv1 32) v_DerPreprocessor_30) (_ bv2 32) v_DerPreprocessor_31) (_ bv3 32) v_DerPreprocessor_32) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|)))))))))) (_ bv1 1)))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvadd (_ bv4 32) c_~head~0.offset))) (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| c_~head~0.base) .cse0)) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$.offset| c_~head~0.base) .cse0)))))))) (_ bv1 1)))) is different from true [2021-10-28 09:20:18,782 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_~head~0.base_203 (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (v_DerPreprocessor_29 (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| v_~head~0.base_203)))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_203 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_203 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_203) (_ bv0 32) v_DerPreprocessor_29) (_ bv1 32) v_DerPreprocessor_30) (_ bv2 32) v_DerPreprocessor_31) (_ bv3 32) v_DerPreprocessor_32) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|)))))))))) (_ bv1 1)))))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvadd (_ bv4 32) c_insert_list_~l.offset))) (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| c_insert_list_~l.base) .cse0)) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$.offset| c_insert_list_~l.base) .cse0))))))))))) is different from true [2021-10-28 09:20:20,877 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_~head~0.base_203 (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (v_DerPreprocessor_29 (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| v_~head~0.base_203)))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_203 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_203 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_203) (_ bv0 32) v_DerPreprocessor_29) (_ bv1 32) v_DerPreprocessor_30) (_ bv2 32) v_DerPreprocessor_31) (_ bv3 32) v_DerPreprocessor_32) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|)))))))))) (_ bv1 1)))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| c_insert_list_~l.base (store (select |c_#memory_$Pointer$.base| c_insert_list_~l.base) (bvadd (_ bv4 32) c_insert_list_~l.offset) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset))))))) (_ bv1 1)))) is different from true [2021-10-28 09:20:22,971 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_~head~0.base_203 (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (v_DerPreprocessor_29 (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| v_~head~0.base_203)))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_203 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_203 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_203) (_ bv0 32) v_DerPreprocessor_29) (_ bv1 32) v_DerPreprocessor_30) (_ bv2 32) v_DerPreprocessor_31) (_ bv3 32) v_DerPreprocessor_32) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|)))))))))) (_ bv1 1)))))) (forall ((v_DerPreprocessor_35 (_ BitVec 32)) (v_DerPreprocessor_36 (_ BitVec 32)) (v_DerPreprocessor_33 (_ BitVec 32)) (v_DerPreprocessor_34 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| c_insert_list_~l.base (store (store (store (store (store (select |c_#memory_$Pointer$.base| c_insert_list_~l.base) c_insert_list_~l.offset v_DerPreprocessor_33) (bvadd (_ bv1 32) c_insert_list_~l.offset) v_DerPreprocessor_34) (bvadd (_ bv2 32) c_insert_list_~l.offset) v_DerPreprocessor_35) (bvadd (_ bv3 32) c_insert_list_~l.offset) v_DerPreprocessor_36) (bvadd (_ bv4 32) c_insert_list_~l.offset) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset))))))) (_ bv1 1))))) is different from true [2021-10-28 09:20:25,120 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_~head~0.base_203 (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (v_DerPreprocessor_29 (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| v_~head~0.base_203)))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_203 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_203 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_203) (_ bv0 32) v_DerPreprocessor_29) (_ bv1 32) v_DerPreprocessor_30) (_ bv2 32) v_DerPreprocessor_31) (_ bv3 32) v_DerPreprocessor_32) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|)))))))))) (_ bv1 1)))))) (forall ((v_insert_list_~l.base_130 (_ BitVec 32)) (v_DerPreprocessor_35 (_ BitVec 32)) (v_DerPreprocessor_36 (_ BitVec 32)) (v_DerPreprocessor_33 (_ BitVec 32)) (v_DerPreprocessor_34 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_insert_list_~l.base_130))))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_insert_list_~l.base_130 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_insert_list_~l.base_130 (store (store (store (store (store (select |c_#memory_$Pointer$.base| v_insert_list_~l.base_130) (_ bv0 32) v_DerPreprocessor_33) (_ bv1 32) v_DerPreprocessor_34) (_ bv2 32) v_DerPreprocessor_35) (_ bv3 32) v_DerPreprocessor_36) (_ bv4 32) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset)))))))) (_ bv1 1)))))) is different from true [2021-10-28 09:20:43,838 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-28 09:20:43,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:20:43,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-28 09:20:43,838 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-28 09:20:43,839 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-10-28 09:20:43,844 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 09:20:43,846 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location search_listErr0REQUIRES_VIOLATION [2021-10-28 09:20:43,846 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location search_listErr1REQUIRES_VIOLATION [2021-10-28 09:20:43,846 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location search_listErr2REQUIRES_VIOLATION [2021-10-28 09:20:43,846 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location search_listErr3REQUIRES_VIOLATION [2021-10-28 09:20:43,847 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 09:20:43,847 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 09:20:43,847 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 09:20:43,847 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 09:20:43,847 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 09:20:43,848 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 09:20:43,848 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 09:20:43,848 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr0REQUIRES_VIOLATION [2021-10-28 09:20:43,848 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr1REQUIRES_VIOLATION [2021-10-28 09:20:43,848 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr2REQUIRES_VIOLATION [2021-10-28 09:20:43,848 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr3REQUIRES_VIOLATION [2021-10-28 09:20:43,848 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr4REQUIRES_VIOLATION [2021-10-28 09:20:43,848 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr5REQUIRES_VIOLATION [2021-10-28 09:20:43,849 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr6REQUIRES_VIOLATION [2021-10-28 09:20:43,849 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr7REQUIRES_VIOLATION [2021-10-28 09:20:43,849 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr8REQUIRES_VIOLATION [2021-10-28 09:20:43,849 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr9REQUIRES_VIOLATION [2021-10-28 09:20:43,849 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr10ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:20:43,849 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr11ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:20:43,850 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr12ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:20:43,850 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_listErr0REQUIRES_VIOLATION [2021-10-28 09:20:43,850 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_listErr1REQUIRES_VIOLATION [2021-10-28 09:20:43,850 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_listErr2REQUIRES_VIOLATION [2021-10-28 09:20:43,850 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_listErr3REQUIRES_VIOLATION [2021-10-28 09:20:43,850 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_listErr4REQUIRES_VIOLATION [2021-10-28 09:20:43,851 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_listErr5REQUIRES_VIOLATION [2021-10-28 09:20:43,851 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_listErr6REQUIRES_VIOLATION [2021-10-28 09:20:43,851 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_listErr7REQUIRES_VIOLATION [2021-10-28 09:20:43,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-28 09:20:44,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-10-28 09:20:44,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-28 09:20:44,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:20:44,459 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:20:44,461 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:20:44,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:20:44 BoogieIcfgContainer [2021-10-28 09:20:44,478 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:20:44,479 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:20:44,480 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:20:44,480 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:20:44,480 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:16:58" (3/4) ... [2021-10-28 09:20:44,485 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:20:44,485 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:20:44,486 INFO L168 Benchmark]: Toolchain (without parser) took 228541.66 ms. Allocated memory was 60.8 MB in the beginning and 111.1 MB in the end (delta: 50.3 MB). Free memory was 37.7 MB in the beginning and 32.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 55.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:20:44,486 INFO L168 Benchmark]: CDTParser took 2.57 ms. Allocated memory is still 60.8 MB. Free memory is still 41.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:20:44,487 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1231.81 ms. Allocated memory was 60.8 MB in the beginning and 86.0 MB in the end (delta: 25.2 MB). Free memory was 37.6 MB in the beginning and 62.8 MB in the end (delta: -25.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:20:44,487 INFO L168 Benchmark]: Boogie Preprocessor took 127.96 ms. Allocated memory is still 86.0 MB. Free memory was 62.8 MB in the beginning and 58.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:20:44,487 INFO L168 Benchmark]: RCFGBuilder took 1421.20 ms. Allocated memory is still 86.0 MB. Free memory was 58.7 MB in the beginning and 46.0 MB in the end (delta: 12.7 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:20:44,488 INFO L168 Benchmark]: TraceAbstraction took 225740.29 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 45.6 MB in the beginning and 32.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 49.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:20:44,489 INFO L168 Benchmark]: Witness Printer took 5.53 ms. Allocated memory is still 111.1 MB. Free memory is still 32.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:20:44,491 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.57 ms. Allocated memory is still 60.8 MB. Free memory is still 41.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1231.81 ms. Allocated memory was 60.8 MB in the beginning and 86.0 MB in the end (delta: 25.2 MB). Free memory was 37.6 MB in the beginning and 62.8 MB in the end (delta: -25.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 127.96 ms. Allocated memory is still 86.0 MB. Free memory was 62.8 MB in the beginning and 58.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1421.20 ms. Allocated memory is still 86.0 MB. Free memory was 58.7 MB in the beginning and 46.0 MB in the end (delta: 12.7 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 225740.29 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 45.6 MB in the beginning and 32.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 49.3 MB. Max. memory is 16.1 GB. * Witness Printer took 5.53 ms. Allocated memory is still 111.1 MB. Free memory is still 32.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 813]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L769] mlist *head; [L804] int i; [L805] mlist *mylist = 0; [L806] mlist *temp; [L807] CALL insert_list(mylist,2) [L792] l = (mlist*)malloc(sizeof(mlist)) [L793] COND TRUE head==((void *)0) [L794] l->key = k [L795] l->next = ((void *)0) [L800] head = l [L801] return 0; [L807] RET insert_list(mylist,2) [L808] CALL insert_list(mylist,5) [L792] l = (mlist*)malloc(sizeof(mlist)) [L793] COND FALSE !(head==((void *)0)) [L797] l->key = k [L798] l->next = head [L800] head = l [L801] return 0; [L808] RET insert_list(mylist,5) [L809] CALL insert_list(mylist,1) [L792] l = (mlist*)malloc(sizeof(mlist)) [L793] COND FALSE !(head==((void *)0)) [L797] l->key = k [L798] l->next = head [L800] head = l [L801] return 0; [L809] RET insert_list(mylist,1) [L810] CALL insert_list(mylist,3) [L792] l = (mlist*)malloc(sizeof(mlist)) [L793] COND FALSE !(head==((void *)0)) [L797] l->key = k [L798] l->next = head [L800] head = l [L801] return 0; [L810] RET insert_list(mylist,3) [L811] mylist = head [L812] COND TRUE \read(*mylist) [L813] EXPR mylist->next [L813] mylist = mylist->next [L812] COND TRUE \read(*mylist) [L813] EXPR mylist->next [L813] mylist = mylist->next [L812] COND TRUE \read(*mylist) [L813] mylist->next - UnprovableResult [Line: 772]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 772]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 773]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 773]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 15]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 813]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 816]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 816]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 820]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 820]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 803]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 785]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 785]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 787]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 787]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 787]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 787]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 794]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 794]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 795]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 795]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 797]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 797]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 798]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 798]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 14 procedures, 130 locations, 33 error locations. Started 1 CEGAR loops. OverallTime: 225.6s, OverallIterations: 10, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 85.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 740 SDtfs, 1399 SDslu, 2023 SDs, 0 SdLazy, 3295 SolverSat, 324 SolverUnsat, 11 SolverUnknown, 0 SolverNotchecked, 36.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 758 GetRequests, 615 SyntacticMatches, 2 SemanticMatches, 141 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 75.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=118occurred in iteration=7, InterpolantAutomatonStates: 110, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 235 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 74.8s InterpolantComputationTime, 395 NumberOfCodeBlocks, 395 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 721 ConstructedInterpolants, 53 QuantifiedInterpolants, 5276 SizeOfPredicates, 62 NumberOfNonLiveVariables, 2216 ConjunctsInSsa, 122 ConjunctsInUnsatCore, 19 InterpolantComputations, 10 PerfectInterpolantSequences, 484/569 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 09:20:44,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b182fec1-eb56-4348-842c-42bce0b03cfa/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...