./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test12-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test12-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 28b4a2248017400eafcc33919e1388faa83abd48459a3d9191abc0a1d3b17a56 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:00:01,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:00:01,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:00:01,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:00:01,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:00:01,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:00:01,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:00:01,543 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:00:01,545 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:00:01,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:00:01,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:00:01,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:00:01,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:00:01,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:00:01,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:00:01,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:00:01,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:00:01,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:00:01,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:00:01,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:00:01,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:00:01,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:00:01,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:00:01,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:00:01,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:00:01,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:00:01,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:00:01,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:00:01,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:00:01,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:00:01,577 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:00:01,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:00:01,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:00:01,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:00:01,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:00:01,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:00:01,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:00:01,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:00:01,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:00:01,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:00:01,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:00:01,587 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-22 15:00:01,612 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:00:01,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:00:01,613 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:00:01,613 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:00:01,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:00:01,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:00:01,615 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:00:01,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:00:01,616 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:00:01,616 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-22 15:00:01,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:00:01,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:00:01,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:00:01,618 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-22 15:00:01,618 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-22 15:00:01,618 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-22 15:00:01,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:00:01,619 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-22 15:00:01,619 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:00:01,619 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:00:01,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:00:01,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:00:01,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:00:01,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:00:01,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:00:01,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:00:01,621 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:00:01,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:00:01,622 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:00:01,622 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_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28b4a2248017400eafcc33919e1388faa83abd48459a3d9191abc0a1d3b17a56 [2021-11-22 15:00:01,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:00:01,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:00:01,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:00:01,916 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:00:01,918 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:00:01,920 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/ldv-memsafety/memleaks_test12-1.i [2021-11-22 15:00:01,986 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/data/585b04922/0cd128955ed34d2f9068634d4b86b1d0/FLAG897485de6 [2021-11-22 15:00:02,575 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:00:02,575 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/sv-benchmarks/c/ldv-memsafety/memleaks_test12-1.i [2021-11-22 15:00:02,599 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/data/585b04922/0cd128955ed34d2f9068634d4b86b1d0/FLAG897485de6 [2021-11-22 15:00:02,873 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/data/585b04922/0cd128955ed34d2f9068634d4b86b1d0 [2021-11-22 15:00:02,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:00:02,877 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:00:02,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:00:02,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:00:02,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:00:02,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:00:02" (1/1) ... [2021-11-22 15:00:02,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@320e21b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:00:02, skipping insertion in model container [2021-11-22 15:00:02,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:00:02" (1/1) ... [2021-11-22 15:00:02,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:00:02,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:00:03,378 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:00:03,395 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) [2021-11-22 15:00:03,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4dde41d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:00:03, skipping insertion in model container [2021-11-22 15:00:03,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:00:03,396 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-22 15:00:03,398 INFO L158 Benchmark]: Toolchain (without parser) took 520.04ms. Allocated memory is still 96.5MB. Free memory was 72.8MB in the beginning and 68.5MB in the end (delta: 4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-22 15:00:03,399 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 96.5MB. Free memory is still 52.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:00:03,399 INFO L158 Benchmark]: CACSL2BoogieTranslator took 517.67ms. Allocated memory is still 96.5MB. Free memory was 72.8MB in the beginning and 68.5MB in the end (delta: 4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-22 15:00:03,401 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 96.5MB. Free memory is still 52.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 517.67ms. Allocated memory is still 96.5MB. Free memory was 72.8MB in the beginning and 68.5MB in the end (delta: 4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test12-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 28b4a2248017400eafcc33919e1388faa83abd48459a3d9191abc0a1d3b17a56 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:00:05,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:00:05,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:00:05,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:00:05,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:00:05,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:00:05,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:00:05,710 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:00:05,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:00:05,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:00:05,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:00:05,722 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:00:05,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:00:05,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:00:05,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:00:05,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:00:05,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:00:05,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:00:05,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:00:05,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:00:05,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:00:05,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:00:05,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:00:05,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:00:05,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:00:05,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:00:05,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:00:05,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:00:05,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:00:05,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:00:05,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:00:05,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:00:05,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:00:05,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:00:05,791 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:00:05,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:00:05,793 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:00:05,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:00:05,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:00:05,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:00:05,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:00:05,797 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-22 15:00:05,839 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:00:05,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:00:05,840 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:00:05,840 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:00:05,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:00:05,843 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:00:05,843 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:00:05,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:00:05,844 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:00:05,844 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-22 15:00:05,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:00:05,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:00:05,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:00:05,846 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-22 15:00:05,846 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-22 15:00:05,846 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-22 15:00:05,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:00:05,847 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-22 15:00:05,847 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-22 15:00:05,847 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-22 15:00:05,848 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:00:05,848 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:00:05,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:00:05,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:00:05,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:00:05,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:00:05,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:00:05,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:00:05,850 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-22 15:00:05,850 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-22 15:00:05,850 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:00:05,851 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-22 15:00:05,851 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_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28b4a2248017400eafcc33919e1388faa83abd48459a3d9191abc0a1d3b17a56 [2021-11-22 15:00:06,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:00:06,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:00:06,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:00:06,314 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:00:06,315 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:00:06,316 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/ldv-memsafety/memleaks_test12-1.i [2021-11-22 15:00:06,388 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/data/101817c22/d81512cf430c4cb080440ae88d8c02ab/FLAG6d9211049 [2021-11-22 15:00:07,122 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:00:07,123 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/sv-benchmarks/c/ldv-memsafety/memleaks_test12-1.i [2021-11-22 15:00:07,144 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/data/101817c22/d81512cf430c4cb080440ae88d8c02ab/FLAG6d9211049 [2021-11-22 15:00:07,323 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/data/101817c22/d81512cf430c4cb080440ae88d8c02ab [2021-11-22 15:00:07,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:00:07,327 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:00:07,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:00:07,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:00:07,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:00:07,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:00:07" (1/1) ... [2021-11-22 15:00:07,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e2e32af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:00:07, skipping insertion in model container [2021-11-22 15:00:07,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:00:07" (1/1) ... [2021-11-22 15:00:07,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:00:07,424 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:00:07,923 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:00:07,940 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-22 15:00:07,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:00:08,013 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:00:08,022 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:00:08,118 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:00:08,171 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:00:08,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:00:08 WrapperNode [2021-11-22 15:00:08,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:00:08,174 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:00:08,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:00:08,174 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:00:08,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:00:08" (1/1) ... [2021-11-22 15:00:08,235 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:00:08" (1/1) ... [2021-11-22 15:00:08,307 INFO L137 Inliner]: procedures = 179, calls = 145, calls flagged for inlining = 51, calls inlined = 35, statements flattened = 487 [2021-11-22 15:00:08,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:00:08,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:00:08,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:00:08,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:00:08,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:00:08" (1/1) ... [2021-11-22 15:00:08,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:00:08" (1/1) ... [2021-11-22 15:00:08,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:00:08" (1/1) ... [2021-11-22 15:00:08,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:00:08" (1/1) ... [2021-11-22 15:00:08,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:00:08" (1/1) ... [2021-11-22 15:00:08,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:00:08" (1/1) ... [2021-11-22 15:00:08,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:00:08" (1/1) ... [2021-11-22 15:00:08,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:00:08,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:00:08,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:00:08,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:00:08,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:00:08" (1/1) ... [2021-11-22 15:00:08,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:00:08,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:00:08,494 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:00:08,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:00:08,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-22 15:00:08,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-22 15:00:08,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-22 15:00:08,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-22 15:00:08,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-22 15:00:08,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-22 15:00:08,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 15:00:08,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:00:08,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 15:00:08,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 15:00:08,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-22 15:00:08,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 15:00:08,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-22 15:00:08,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 15:00:08,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 15:00:08,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-22 15:00:08,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-22 15:00:08,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:00:08,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:00:08,852 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:00:08,853 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:00:10,762 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:00:10,773 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:00:10,776 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-22 15:00:10,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:00:10 BoogieIcfgContainer [2021-11-22 15:00:10,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:00:10,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:00:10,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:00:10,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:00:10,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:00:07" (1/3) ... [2021-11-22 15:00:10,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb45531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:00:10, skipping insertion in model container [2021-11-22 15:00:10,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:00:08" (2/3) ... [2021-11-22 15:00:10,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb45531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:00:10, skipping insertion in model container [2021-11-22 15:00:10,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:00:10" (3/3) ... [2021-11-22 15:00:10,792 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test12-1.i [2021-11-22 15:00:10,803 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:00:10,803 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 132 error locations. [2021-11-22 15:00:10,853 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:00:10,860 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 [2021-11-22 15:00:10,860 INFO L340 AbstractCegarLoop]: Starting to check reachability of 132 error locations. [2021-11-22 15:00:10,881 INFO L276 IsEmpty]: Start isEmpty. Operand has 330 states, 197 states have (on average 1.868020304568528) internal successors, (368), 329 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:10,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-22 15:00:10,887 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:00:10,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:00:10,888 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr109REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:00:10,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:00:10,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1804980999, now seen corresponding path program 1 times [2021-11-22 15:00:10,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:00:10,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044546401] [2021-11-22 15:00:10,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:00:10,906 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:00:10,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:00:10,909 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:00:10,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-22 15:00:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:00:11,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:00:11,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:00:11,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:11,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:00:11,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:11,144 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:00:11,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2044546401] [2021-11-22 15:00:11,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2044546401] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:00:11,146 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:00:11,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-22 15:00:11,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088422764] [2021-11-22 15:00:11,148 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:00:11,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:00:11,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:00:11,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:00:11,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:00:11,195 INFO L87 Difference]: Start difference. First operand has 330 states, 197 states have (on average 1.868020304568528) internal successors, (368), 329 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:11,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:00:11,637 INFO L93 Difference]: Finished difference Result 1291 states and 1417 transitions. [2021-11-22 15:00:11,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:00:11,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-22 15:00:11,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:00:11,668 INFO L225 Difference]: With dead ends: 1291 [2021-11-22 15:00:11,668 INFO L226 Difference]: Without dead ends: 1283 [2021-11-22 15:00:11,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:00:11,684 INFO L933 BasicCegarLoop]: 396 mSDtfsCounter, 1383 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:00:11,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1383 Valid, 1163 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:00:11,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2021-11-22 15:00:11,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 330. [2021-11-22 15:00:11,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 198 states have (on average 1.8484848484848484) internal successors, (366), 329 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:11,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 366 transitions. [2021-11-22 15:00:11,783 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 366 transitions. Word has length 7 [2021-11-22 15:00:11,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:00:11,784 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 366 transitions. [2021-11-22 15:00:11,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:11,784 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 366 transitions. [2021-11-22 15:00:11,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-22 15:00:11,784 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:00:11,784 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:00:11,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:00:11,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:00:11,985 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr109REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:00:11,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:00:11,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1806828041, now seen corresponding path program 1 times [2021-11-22 15:00:11,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:00:11,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1856802169] [2021-11-22 15:00:11,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:00:11,987 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:00:11,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:00:11,988 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:00:12,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-22 15:00:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:00:12,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:00:12,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:00:12,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:12,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:00:12,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:12,157 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:00:12,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1856802169] [2021-11-22 15:00:12,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1856802169] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:00:12,157 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:00:12,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-11-22 15:00:12,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240678762] [2021-11-22 15:00:12,158 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:00:12,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:00:12,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:00:12,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:00:12,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:00:12,160 INFO L87 Difference]: Start difference. First operand 330 states and 366 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:12,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:00:12,808 INFO L93 Difference]: Finished difference Result 458 states and 499 transitions. [2021-11-22 15:00:12,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:00:12,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-22 15:00:12,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:00:12,812 INFO L225 Difference]: With dead ends: 458 [2021-11-22 15:00:12,812 INFO L226 Difference]: Without dead ends: 458 [2021-11-22 15:00:12,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:00:12,814 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 573 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 15:00:12,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 374 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 15:00:12,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-11-22 15:00:12,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 332. [2021-11-22 15:00:12,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 200 states have (on average 1.845) internal successors, (369), 331 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:12,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 369 transitions. [2021-11-22 15:00:12,825 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 369 transitions. Word has length 7 [2021-11-22 15:00:12,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:00:12,826 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 369 transitions. [2021-11-22 15:00:12,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:12,826 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 369 transitions. [2021-11-22 15:00:12,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-22 15:00:12,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:00:12,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:00:12,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-22 15:00:13,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:00:13,029 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr110REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:00:13,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:00:13,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1806828042, now seen corresponding path program 1 times [2021-11-22 15:00:13,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:00:13,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695026494] [2021-11-22 15:00:13,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:00:13,031 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:00:13,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:00:13,035 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:00:13,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-22 15:00:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:00:13,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 15:00:13,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:00:13,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:13,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:00:13,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:13,359 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:00:13,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695026494] [2021-11-22 15:00:13,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [695026494] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:00:13,360 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:00:13,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-11-22 15:00:13,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735392278] [2021-11-22 15:00:13,360 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:00:13,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:00:13,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:00:13,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:00:13,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:00:13,362 INFO L87 Difference]: Start difference. First operand 332 states and 369 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:14,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:00:14,338 INFO L93 Difference]: Finished difference Result 437 states and 482 transitions. [2021-11-22 15:00:14,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:00:14,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-22 15:00:14,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:00:14,344 INFO L225 Difference]: With dead ends: 437 [2021-11-22 15:00:14,344 INFO L226 Difference]: Without dead ends: 437 [2021-11-22 15:00:14,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:00:14,346 INFO L933 BasicCegarLoop]: 396 mSDtfsCounter, 266 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:00:14,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 643 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-22 15:00:14,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2021-11-22 15:00:14,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 364. [2021-11-22 15:00:14,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 232 states have (on average 1.8405172413793103) internal successors, (427), 363 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:14,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 427 transitions. [2021-11-22 15:00:14,357 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 427 transitions. Word has length 7 [2021-11-22 15:00:14,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:00:14,357 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 427 transitions. [2021-11-22 15:00:14,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:14,358 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 427 transitions. [2021-11-22 15:00:14,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 15:00:14,359 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:00:14,359 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:00:14,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-22 15:00:14,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:00:14,569 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr106ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:00:14,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:00:14,570 INFO L85 PathProgramCache]: Analyzing trace with hash -592189532, now seen corresponding path program 1 times [2021-11-22 15:00:14,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:00:14,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1652309484] [2021-11-22 15:00:14,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:00:14,571 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:00:14,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:00:14,572 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:00:14,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-22 15:00:14,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:00:14,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:00:14,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:00:14,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:14,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:00:14,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:14,700 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:00:14,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1652309484] [2021-11-22 15:00:14,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1652309484] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:00:14,700 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:00:14,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-22 15:00:14,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137367034] [2021-11-22 15:00:14,701 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:00:14,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:00:14,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:00:14,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:00:14,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:00:14,702 INFO L87 Difference]: Start difference. First operand 364 states and 427 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:14,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:00:14,908 INFO L93 Difference]: Finished difference Result 1304 states and 1453 transitions. [2021-11-22 15:00:14,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:00:14,909 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-22 15:00:14,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:00:14,917 INFO L225 Difference]: With dead ends: 1304 [2021-11-22 15:00:14,917 INFO L226 Difference]: Without dead ends: 1304 [2021-11-22 15:00:14,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:00:14,924 INFO L933 BasicCegarLoop]: 405 mSDtfsCounter, 1357 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:00:14,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1357 Valid, 1191 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:00:14,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2021-11-22 15:00:14,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 366. [2021-11-22 15:00:14,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 234 states have (on average 1.8333333333333333) internal successors, (429), 365 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:14,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 429 transitions. [2021-11-22 15:00:14,942 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 429 transitions. Word has length 9 [2021-11-22 15:00:14,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:00:14,943 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 429 transitions. [2021-11-22 15:00:14,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:14,946 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 429 transitions. [2021-11-22 15:00:14,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 15:00:14,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:00:14,947 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:00:14,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-22 15:00:15,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:00:15,157 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:00:15,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:00:15,162 INFO L85 PathProgramCache]: Analyzing trace with hash -592189907, now seen corresponding path program 1 times [2021-11-22 15:00:15,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:00:15,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092729969] [2021-11-22 15:00:15,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:00:15,164 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:00:15,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:00:15,165 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:00:15,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-22 15:00:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:00:15,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 15:00:15,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:00:15,296 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 [2021-11-22 15:00:15,351 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-22 15:00:15,351 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 26 treesize of output 33 [2021-11-22 15:00:15,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:15,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:00:21,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:21,632 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:00:21,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2092729969] [2021-11-22 15:00:21,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2092729969] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:00:21,632 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:00:21,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-22 15:00:21,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269715683] [2021-11-22 15:00:21,633 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:00:21,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:00:21,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:00:21,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:00:21,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=24, Unknown=3, NotChecked=0, Total=42 [2021-11-22 15:00:21,635 INFO L87 Difference]: Start difference. First operand 366 states and 429 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:22,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:00:22,360 INFO L93 Difference]: Finished difference Result 566 states and 651 transitions. [2021-11-22 15:00:22,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:00:22,361 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-22 15:00:22,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:00:22,365 INFO L225 Difference]: With dead ends: 566 [2021-11-22 15:00:22,366 INFO L226 Difference]: Without dead ends: 566 [2021-11-22 15:00:22,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=29, Invalid=40, Unknown=3, NotChecked=0, Total=72 [2021-11-22 15:00:22,367 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 209 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 408 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 15:00:22,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 1095 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 248 Invalid, 0 Unknown, 408 Unchecked, 0.6s Time] [2021-11-22 15:00:22,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-11-22 15:00:22,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 369. [2021-11-22 15:00:22,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 237 states have (on average 1.8270042194092826) internal successors, (433), 368 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:22,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 433 transitions. [2021-11-22 15:00:22,382 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 433 transitions. Word has length 9 [2021-11-22 15:00:22,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:00:22,382 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 433 transitions. [2021-11-22 15:00:22,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:22,383 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 433 transitions. [2021-11-22 15:00:22,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 15:00:22,383 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:00:22,383 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:00:22,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-22 15:00:22,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:00:22,595 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:00:22,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:00:22,595 INFO L85 PathProgramCache]: Analyzing trace with hash -592189906, now seen corresponding path program 1 times [2021-11-22 15:00:22,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:00:22,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516240127] [2021-11-22 15:00:22,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:00:22,596 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:00:22,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:00:22,597 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:00:22,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-22 15:00:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:00:22,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-22 15:00:22,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:00:22,711 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 [2021-11-22 15:00:22,716 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 [2021-11-22 15:00:22,814 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 15:00:22,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-11-22 15:00:22,828 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 15:00:22,829 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 [2021-11-22 15:00:22,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:22,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:00:23,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2021-11-22 15:00:23,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:23,328 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:00:23,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516240127] [2021-11-22 15:00:23,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516240127] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:00:23,329 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:00:23,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-22 15:00:23,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645887173] [2021-11-22 15:00:23,329 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:00:23,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 15:00:23,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:00:23,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 15:00:23,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-22 15:00:23,331 INFO L87 Difference]: Start difference. First operand 369 states and 433 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:24,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:00:24,517 INFO L93 Difference]: Finished difference Result 627 states and 716 transitions. [2021-11-22 15:00:24,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:00:24,518 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-22 15:00:24,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:00:24,521 INFO L225 Difference]: With dead ends: 627 [2021-11-22 15:00:24,522 INFO L226 Difference]: Without dead ends: 627 [2021-11-22 15:00:24,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-11-22 15:00:24,523 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 449 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1827 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 649 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:00:24,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 1827 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 344 Invalid, 0 Unknown, 649 Unchecked, 1.0s Time] [2021-11-22 15:00:24,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2021-11-22 15:00:24,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 388. [2021-11-22 15:00:24,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 256 states have (on average 1.796875) internal successors, (460), 387 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:24,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 460 transitions. [2021-11-22 15:00:24,535 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 460 transitions. Word has length 9 [2021-11-22 15:00:24,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:00:24,535 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 460 transitions. [2021-11-22 15:00:24,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:24,536 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 460 transitions. [2021-11-22 15:00:24,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 15:00:24,536 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:00:24,536 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:00:24,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-22 15:00:24,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:00:24,751 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr111REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:00:24,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:00:24,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1194974090, now seen corresponding path program 1 times [2021-11-22 15:00:24,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:00:24,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044451694] [2021-11-22 15:00:24,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:00:24,755 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:00:24,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:00:24,757 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:00:24,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-22 15:00:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:00:24,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 15:00:24,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:00:24,939 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 15 treesize of output 7 [2021-11-22 15:00:24,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:24,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:00:25,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:25,030 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:00:25,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044451694] [2021-11-22 15:00:25,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044451694] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:00:25,031 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:00:25,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-22 15:00:25,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844230841] [2021-11-22 15:00:25,031 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:00:25,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 15:00:25,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:00:25,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 15:00:25,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:00:25,032 INFO L87 Difference]: Start difference. First operand 388 states and 460 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:27,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:00:27,007 INFO L93 Difference]: Finished difference Result 462 states and 536 transitions. [2021-11-22 15:00:27,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:00:27,007 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-22 15:00:27,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:00:27,010 INFO L225 Difference]: With dead ends: 462 [2021-11-22 15:00:27,010 INFO L226 Difference]: Without dead ends: 462 [2021-11-22 15:00:27,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-22 15:00:27,011 INFO L933 BasicCegarLoop]: 337 mSDtfsCounter, 128 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-22 15:00:27,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 1415 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-22 15:00:27,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-11-22 15:00:27,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 390. [2021-11-22 15:00:27,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 258 states have (on average 1.7945736434108528) internal successors, (463), 389 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:27,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 463 transitions. [2021-11-22 15:00:27,023 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 463 transitions. Word has length 9 [2021-11-22 15:00:27,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:00:27,023 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 463 transitions. [2021-11-22 15:00:27,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:27,024 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 463 transitions. [2021-11-22 15:00:27,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 15:00:27,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:00:27,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:00:27,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-22 15:00:27,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:00:27,236 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr112REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:00:27,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:00:27,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1194974091, now seen corresponding path program 1 times [2021-11-22 15:00:27,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:00:27,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865592664] [2021-11-22 15:00:27,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:00:27,237 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:00:27,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:00:27,238 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:00:27,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-22 15:00:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:00:27,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-22 15:00:27,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:00:27,445 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 15 treesize of output 7 [2021-11-22 15:00:27,454 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 15 treesize of output 7 [2021-11-22 15:00:27,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:27,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:00:27,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:27,795 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:00:27,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1865592664] [2021-11-22 15:00:27,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1865592664] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:00:27,796 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:00:27,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-22 15:00:27,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030607959] [2021-11-22 15:00:27,796 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:00:27,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 15:00:27,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:00:27,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 15:00:27,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:00:27,797 INFO L87 Difference]: Start difference. First operand 390 states and 463 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:30,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:00:30,273 INFO L93 Difference]: Finished difference Result 448 states and 518 transitions. [2021-11-22 15:00:30,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:00:30,278 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-22 15:00:30,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:00:30,281 INFO L225 Difference]: With dead ends: 448 [2021-11-22 15:00:30,281 INFO L226 Difference]: Without dead ends: 448 [2021-11-22 15:00:30,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-22 15:00:30,282 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 97 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1399 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:00:30,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 1399 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-22 15:00:30,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-11-22 15:00:30,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 399. [2021-11-22 15:00:30,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 267 states have (on average 1.7827715355805243) internal successors, (476), 398 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:30,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 476 transitions. [2021-11-22 15:00:30,293 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 476 transitions. Word has length 9 [2021-11-22 15:00:30,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:00:30,294 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 476 transitions. [2021-11-22 15:00:30,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:30,294 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 476 transitions. [2021-11-22 15:00:30,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 15:00:30,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:00:30,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:00:30,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-22 15:00:30,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:00:30,501 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:00:30,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:00:30,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1182817455, now seen corresponding path program 1 times [2021-11-22 15:00:30,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:00:30,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923746411] [2021-11-22 15:00:30,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:00:30,502 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:00:30,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:00:30,503 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:00:30,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-22 15:00:30,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:00:30,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 15:00:30,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:00:30,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:30,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:00:30,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:30,645 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:00:30,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923746411] [2021-11-22 15:00:30,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1923746411] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:00:30,646 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:00:30,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-22 15:00:30,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261505844] [2021-11-22 15:00:30,647 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:00:30,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:00:30,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:00:30,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:00:30,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:00:30,649 INFO L87 Difference]: Start difference. First operand 399 states and 476 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:30,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:00:30,817 INFO L93 Difference]: Finished difference Result 669 states and 738 transitions. [2021-11-22 15:00:30,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:00:30,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-22 15:00:30,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:00:30,822 INFO L225 Difference]: With dead ends: 669 [2021-11-22 15:00:30,822 INFO L226 Difference]: Without dead ends: 669 [2021-11-22 15:00:30,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:00:30,823 INFO L933 BasicCegarLoop]: 638 mSDtfsCounter, 356 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:00:30,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 1575 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:00:30,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2021-11-22 15:00:30,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 355. [2021-11-22 15:00:30,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 225 states have (on average 1.7733333333333334) internal successors, (399), 354 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:30,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 399 transitions. [2021-11-22 15:00:30,834 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 399 transitions. Word has length 9 [2021-11-22 15:00:30,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:00:30,834 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 399 transitions. [2021-11-22 15:00:30,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:30,835 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 399 transitions. [2021-11-22 15:00:30,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-22 15:00:30,835 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:00:30,836 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:00:30,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-22 15:00:31,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:00:31,047 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:00:31,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:00:31,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1176158768, now seen corresponding path program 1 times [2021-11-22 15:00:31,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:00:31,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [312077617] [2021-11-22 15:00:31,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:00:31,048 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:00:31,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:00:31,049 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:00:31,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-22 15:00:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:00:31,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 15:00:31,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:00:31,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:31,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:00:31,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:31,244 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:00:31,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [312077617] [2021-11-22 15:00:31,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [312077617] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:00:31,245 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:00:31,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-22 15:00:31,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166276172] [2021-11-22 15:00:31,245 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:00:31,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:00:31,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:00:31,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:00:31,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:00:31,247 INFO L87 Difference]: Start difference. First operand 355 states and 399 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:31,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:00:31,643 INFO L93 Difference]: Finished difference Result 667 states and 735 transitions. [2021-11-22 15:00:31,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:00:31,643 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-22 15:00:31,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:00:31,647 INFO L225 Difference]: With dead ends: 667 [2021-11-22 15:00:31,647 INFO L226 Difference]: Without dead ends: 667 [2021-11-22 15:00:31,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-22 15:00:31,648 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 1605 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:00:31,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1605 Valid, 680 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:00:31,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2021-11-22 15:00:31,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 354. [2021-11-22 15:00:31,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 225 states have (on average 1.7644444444444445) internal successors, (397), 353 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:31,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 397 transitions. [2021-11-22 15:00:31,660 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 397 transitions. Word has length 10 [2021-11-22 15:00:31,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:00:31,661 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 397 transitions. [2021-11-22 15:00:31,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:31,661 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 397 transitions. [2021-11-22 15:00:31,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-22 15:00:31,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:00:31,666 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:00:31,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-22 15:00:31,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:00:31,873 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr109REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:00:31,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:00:31,874 INFO L85 PathProgramCache]: Analyzing trace with hash -602160153, now seen corresponding path program 1 times [2021-11-22 15:00:31,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:00:31,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [465799698] [2021-11-22 15:00:31,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:00:31,874 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:00:31,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:00:31,875 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:00:31,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-22 15:00:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:00:31,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 15:00:31,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:00:31,991 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-22 15:00:31,991 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 20 treesize of output 27 [2021-11-22 15:00:32,167 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-11-22 15:00:32,167 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 33 [2021-11-22 15:00:32,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:32,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:00:32,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:32,312 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:00:32,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [465799698] [2021-11-22 15:00:32,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [465799698] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:00:32,313 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:00:32,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 7 [2021-11-22 15:00:32,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20620391] [2021-11-22 15:00:32,313 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:00:32,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:00:32,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:00:32,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:00:32,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:00:32,314 INFO L87 Difference]: Start difference. First operand 354 states and 397 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:47,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:00:47,555 INFO L93 Difference]: Finished difference Result 664 states and 732 transitions. [2021-11-22 15:00:47,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 15:00:47,556 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-22 15:00:47,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:00:47,558 INFO L225 Difference]: With dead ends: 664 [2021-11-22 15:00:47,559 INFO L226 Difference]: Without dead ends: 664 [2021-11-22 15:00:47,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=68, Invalid=109, Unknown=5, NotChecked=0, Total=182 [2021-11-22 15:00:47,559 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 1199 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1199 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 234 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:00:47,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1199 Valid, 1049 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 572 Invalid, 0 Unknown, 234 Unchecked, 1.1s Time] [2021-11-22 15:00:47,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-11-22 15:00:47,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 354. [2021-11-22 15:00:47,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 227 states have (on average 1.7533039647577093) internal successors, (398), 353 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:47,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 398 transitions. [2021-11-22 15:00:47,570 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 398 transitions. Word has length 13 [2021-11-22 15:00:47,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:00:47,571 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 398 transitions. [2021-11-22 15:00:47,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:47,571 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 398 transitions. [2021-11-22 15:00:47,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-22 15:00:47,572 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:00:47,572 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:00:47,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-22 15:00:47,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:00:47,777 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr110REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:00:47,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:00:47,778 INFO L85 PathProgramCache]: Analyzing trace with hash -602160152, now seen corresponding path program 1 times [2021-11-22 15:00:47,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:00:47,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169115712] [2021-11-22 15:00:47,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:00:47,778 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:00:47,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:00:47,779 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:00:47,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-22 15:00:47,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:00:47,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 15:00:47,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:00:47,916 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 15:00:47,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31 [2021-11-22 15:00:48,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:48,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:00:50,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:50,347 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:00:50,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169115712] [2021-11-22 15:00:50,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [169115712] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:00:50,348 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:00:50,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-11-22 15:00:50,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276877332] [2021-11-22 15:00:50,348 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:00:50,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:00:50,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:00:50,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:00:50,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-22 15:00:50,349 INFO L87 Difference]: Start difference. First operand 354 states and 398 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:51,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:00:51,579 INFO L93 Difference]: Finished difference Result 469 states and 512 transitions. [2021-11-22 15:00:51,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:00:51,580 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-22 15:00:51,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:00:51,582 INFO L225 Difference]: With dead ends: 469 [2021-11-22 15:00:51,582 INFO L226 Difference]: Without dead ends: 469 [2021-11-22 15:00:51,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-22 15:00:51,583 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 275 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 235 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:00:51,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 1023 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 297 Invalid, 0 Unknown, 235 Unchecked, 1.2s Time] [2021-11-22 15:00:51,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2021-11-22 15:00:51,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 368. [2021-11-22 15:00:51,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 241 states have (on average 1.7551867219917012) internal successors, (423), 367 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:51,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 423 transitions. [2021-11-22 15:00:51,593 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 423 transitions. Word has length 13 [2021-11-22 15:00:51,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:00:51,593 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 423 transitions. [2021-11-22 15:00:51,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:51,594 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 423 transitions. [2021-11-22 15:00:51,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-22 15:00:51,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:00:51,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:00:51,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-22 15:00:51,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:00:51,805 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr103ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:00:51,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:00:51,806 INFO L85 PathProgramCache]: Analyzing trace with hash -493393864, now seen corresponding path program 1 times [2021-11-22 15:00:51,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:00:51,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [959095851] [2021-11-22 15:00:51,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:00:51,807 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:00:51,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:00:51,807 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:00:51,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-22 15:00:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:00:51,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:00:51,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:00:51,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:51,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:00:51,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:51,926 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:00:51,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [959095851] [2021-11-22 15:00:51,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [959095851] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:00:51,926 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:00:51,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-22 15:00:51,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537192593] [2021-11-22 15:00:51,927 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:00:51,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:00:51,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:00:51,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:00:51,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:00:51,928 INFO L87 Difference]: Start difference. First operand 368 states and 423 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:52,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:00:52,066 INFO L93 Difference]: Finished difference Result 1280 states and 1417 transitions. [2021-11-22 15:00:52,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:00:52,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-22 15:00:52,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:00:52,074 INFO L225 Difference]: With dead ends: 1280 [2021-11-22 15:00:52,074 INFO L226 Difference]: Without dead ends: 1280 [2021-11-22 15:00:52,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:00:52,075 INFO L933 BasicCegarLoop]: 408 mSDtfsCounter, 1320 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:00:52,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1320 Valid, 1200 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:00:52,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2021-11-22 15:00:52,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 370. [2021-11-22 15:00:52,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 243 states have (on average 1.7489711934156378) internal successors, (425), 369 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:52,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 425 transitions. [2021-11-22 15:00:52,090 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 425 transitions. Word has length 14 [2021-11-22 15:00:52,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:00:52,093 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 425 transitions. [2021-11-22 15:00:52,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:52,093 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 425 transitions. [2021-11-22 15:00:52,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-22 15:00:52,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:00:52,094 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:00:52,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-22 15:00:52,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:00:52,305 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:00:52,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:00:52,306 INFO L85 PathProgramCache]: Analyzing trace with hash -493394216, now seen corresponding path program 1 times [2021-11-22 15:00:52,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:00:52,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293832550] [2021-11-22 15:00:52,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:00:52,306 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:00:52,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:00:52,307 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:00:52,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-22 15:00:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:00:52,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 15:00:52,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:00:52,417 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 [2021-11-22 15:00:52,455 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-22 15:00:52,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2021-11-22 15:00:52,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:52,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:00:52,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:52,531 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:00:52,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293832550] [2021-11-22 15:00:52,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293832550] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:00:52,531 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:00:52,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-22 15:00:52,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631698297] [2021-11-22 15:00:52,532 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:00:52,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:00:52,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:00:52,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:00:52,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:00:52,533 INFO L87 Difference]: Start difference. First operand 370 states and 425 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:53,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:00:53,300 INFO L93 Difference]: Finished difference Result 602 states and 679 transitions. [2021-11-22 15:00:53,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:00:53,302 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-22 15:00:53,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:00:53,305 INFO L225 Difference]: With dead ends: 602 [2021-11-22 15:00:53,305 INFO L226 Difference]: Without dead ends: 602 [2021-11-22 15:00:53,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:00:53,306 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 593 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 15:00:53,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [593 Valid, 573 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 15:00:53,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-11-22 15:00:53,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 376. [2021-11-22 15:00:53,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 249 states have (on average 1.7429718875502007) internal successors, (434), 375 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:53,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 434 transitions. [2021-11-22 15:00:53,316 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 434 transitions. Word has length 14 [2021-11-22 15:00:53,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:00:53,316 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 434 transitions. [2021-11-22 15:00:53,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:53,316 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 434 transitions. [2021-11-22 15:00:53,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-22 15:00:53,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:00:53,318 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:00:53,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-22 15:00:53,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:00:53,529 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:00:53,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:00:53,529 INFO L85 PathProgramCache]: Analyzing trace with hash -493394215, now seen corresponding path program 1 times [2021-11-22 15:00:53,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:00:53,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960659443] [2021-11-22 15:00:53,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:00:53,529 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:00:53,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:00:53,530 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:00:53,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-22 15:00:53,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:00:53,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-22 15:00:53,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:00:53,637 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 [2021-11-22 15:00:53,736 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 15:00:53,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-22 15:00:53,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:53,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:00:54,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:54,263 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:00:54,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960659443] [2021-11-22 15:00:54,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960659443] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:00:54,264 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:00:54,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 10 [2021-11-22 15:00:54,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578605435] [2021-11-22 15:00:54,264 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:00:54,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-22 15:00:54,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:00:54,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-22 15:00:54,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-22 15:00:54,265 INFO L87 Difference]: Start difference. First operand 376 states and 434 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:56,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:00:56,034 INFO L93 Difference]: Finished difference Result 960 states and 1046 transitions. [2021-11-22 15:00:56,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:00:56,035 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-22 15:00:56,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:00:56,039 INFO L225 Difference]: With dead ends: 960 [2021-11-22 15:00:56,039 INFO L226 Difference]: Without dead ends: 960 [2021-11-22 15:00:56,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-11-22 15:00:56,041 INFO L933 BasicCegarLoop]: 421 mSDtfsCounter, 1119 mSDsluCounter, 2388 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 2809 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 550 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-22 15:00:56,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1119 Valid, 2809 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 547 Invalid, 0 Unknown, 550 Unchecked, 1.6s Time] [2021-11-22 15:00:56,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2021-11-22 15:00:56,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 392. [2021-11-22 15:00:56,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 265 states have (on average 1.7320754716981133) internal successors, (459), 391 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:56,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 459 transitions. [2021-11-22 15:00:56,054 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 459 transitions. Word has length 14 [2021-11-22 15:00:56,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:00:56,054 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 459 transitions. [2021-11-22 15:00:56,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:56,055 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 459 transitions. [2021-11-22 15:00:56,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-22 15:00:56,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:00:56,056 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:00:56,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-22 15:00:56,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:00:56,261 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:00:56,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:00:56,261 INFO L85 PathProgramCache]: Analyzing trace with hash 186664154, now seen corresponding path program 1 times [2021-11-22 15:00:56,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:00:56,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [46050652] [2021-11-22 15:00:56,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:00:56,262 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:00:56,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:00:56,263 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:00:56,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-22 15:00:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:00:56,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 15:00:56,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:00:56,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:56,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:00:56,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:56,407 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:00:56,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [46050652] [2021-11-22 15:00:56,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [46050652] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:00:56,408 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:00:56,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-22 15:00:56,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691122336] [2021-11-22 15:00:56,408 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:00:56,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:00:56,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:00:56,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:00:56,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:00:56,409 INFO L87 Difference]: Start difference. First operand 392 states and 459 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:56,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:00:56,540 INFO L93 Difference]: Finished difference Result 705 states and 778 transitions. [2021-11-22 15:00:56,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:00:56,540 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-22 15:00:56,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:00:56,544 INFO L225 Difference]: With dead ends: 705 [2021-11-22 15:00:56,544 INFO L226 Difference]: Without dead ends: 705 [2021-11-22 15:00:56,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:00:56,545 INFO L933 BasicCegarLoop]: 628 mSDtfsCounter, 428 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:00:56,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 1555 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:00:56,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2021-11-22 15:00:56,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 348. [2021-11-22 15:00:56,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 223 states have (on average 1.7443946188340806) internal successors, (389), 347 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:56,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 389 transitions. [2021-11-22 15:00:56,559 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 389 transitions. Word has length 14 [2021-11-22 15:00:56,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:00:56,560 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 389 transitions. [2021-11-22 15:00:56,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:56,560 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 389 transitions. [2021-11-22 15:00:56,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-22 15:00:56,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:00:56,561 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:00:56,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-22 15:00:56,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:00:56,772 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr131ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:00:56,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:00:56,772 INFO L85 PathProgramCache]: Analyzing trace with hash 248517516, now seen corresponding path program 1 times [2021-11-22 15:00:56,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:00:56,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1386007430] [2021-11-22 15:00:56,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:00:56,773 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:00:56,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:00:56,774 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:00:56,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-22 15:00:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:00:56,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 15:00:56,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:00:56,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:56,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:00:56,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:56,920 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:00:56,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1386007430] [2021-11-22 15:00:56,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1386007430] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:00:56,921 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:00:56,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-22 15:00:56,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591206211] [2021-11-22 15:00:56,921 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:00:56,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:00:56,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:00:56,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:00:56,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:00:56,923 INFO L87 Difference]: Start difference. First operand 348 states and 389 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:57,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:00:57,227 INFO L93 Difference]: Finished difference Result 351 states and 391 transitions. [2021-11-22 15:00:57,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:00:57,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-22 15:00:57,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:00:57,229 INFO L225 Difference]: With dead ends: 351 [2021-11-22 15:00:57,229 INFO L226 Difference]: Without dead ends: 340 [2021-11-22 15:00:57,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:00:57,230 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 0 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:00:57,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 575 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:00:57,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-11-22 15:00:57,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2021-11-22 15:00:57,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 215 states have (on average 1.7674418604651163) internal successors, (380), 339 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:57,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 380 transitions. [2021-11-22 15:00:57,238 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 380 transitions. Word has length 14 [2021-11-22 15:00:57,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:00:57,238 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 380 transitions. [2021-11-22 15:00:57,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:57,239 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 380 transitions. [2021-11-22 15:00:57,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-22 15:00:57,239 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:00:57,239 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:00:57,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-22 15:00:57,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:00:57,449 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr104ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:00:57,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:00:57,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1886506933, now seen corresponding path program 1 times [2021-11-22 15:00:57,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:00:57,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1538006292] [2021-11-22 15:00:57,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:00:57,450 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:00:57,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:00:57,451 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:00:57,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-22 15:00:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:00:57,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 15:00:57,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:00:57,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:57,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:00:57,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:57,868 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:00:57,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1538006292] [2021-11-22 15:00:57,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1538006292] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:00:57,868 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:00:57,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 7 [2021-11-22 15:00:57,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340651020] [2021-11-22 15:00:57,869 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:00:57,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 15:00:57,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:00:57,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 15:00:57,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:00:57,870 INFO L87 Difference]: Start difference. First operand 340 states and 380 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:58,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:00:58,187 INFO L93 Difference]: Finished difference Result 1051 states and 1168 transitions. [2021-11-22 15:00:58,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 15:00:58,188 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-22 15:00:58,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:00:58,192 INFO L225 Difference]: With dead ends: 1051 [2021-11-22 15:00:58,192 INFO L226 Difference]: Without dead ends: 1051 [2021-11-22 15:00:58,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-22 15:00:58,193 INFO L933 BasicCegarLoop]: 623 mSDtfsCounter, 895 mSDsluCounter, 2165 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 2788 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 190 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:00:58,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [895 Valid, 2788 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 176 Invalid, 0 Unknown, 190 Unchecked, 0.3s Time] [2021-11-22 15:00:58,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2021-11-22 15:00:58,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 498. [2021-11-22 15:00:58,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 373 states have (on average 1.7962466487935658) internal successors, (670), 497 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:58,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 670 transitions. [2021-11-22 15:00:58,231 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 670 transitions. Word has length 15 [2021-11-22 15:00:58,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:00:58,232 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 670 transitions. [2021-11-22 15:00:58,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:58,232 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 670 transitions. [2021-11-22 15:00:58,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-22 15:00:58,233 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:00:58,233 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:00:58,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-22 15:00:58,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:00:58,453 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr111REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:00:58,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:00:58,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1144692200, now seen corresponding path program 1 times [2021-11-22 15:00:58,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:00:58,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843627274] [2021-11-22 15:00:58,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:00:58,454 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:00:58,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:00:58,456 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:00:58,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-22 15:00:58,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:00:58,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 15:00:58,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:00:58,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-11-22 15:00:58,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:58,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:00:58,640 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-11-22 15:00:58,640 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 21 [2021-11-22 15:00:58,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:58,687 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:00:58,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1843627274] [2021-11-22 15:00:58,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1843627274] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:00:58,687 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:00:58,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-22 15:00:58,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723633372] [2021-11-22 15:00:58,688 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:00:58,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:00:58,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:00:58,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:00:58,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:00:58,689 INFO L87 Difference]: Start difference. First operand 498 states and 670 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:59,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:00:59,809 INFO L93 Difference]: Finished difference Result 549 states and 722 transitions. [2021-11-22 15:00:59,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:00:59,809 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-22 15:00:59,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:00:59,811 INFO L225 Difference]: With dead ends: 549 [2021-11-22 15:00:59,811 INFO L226 Difference]: Without dead ends: 549 [2021-11-22 15:00:59,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:00:59,812 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 69 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:00:59,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 1042 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-22 15:00:59,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-11-22 15:00:59,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 500. [2021-11-22 15:00:59,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 375 states have (on average 1.7946666666666666) internal successors, (673), 499 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:59,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 673 transitions. [2021-11-22 15:00:59,825 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 673 transitions. Word has length 15 [2021-11-22 15:00:59,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:00:59,825 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 673 transitions. [2021-11-22 15:00:59,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:00:59,825 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 673 transitions. [2021-11-22 15:00:59,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-22 15:00:59,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:00:59,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:00:59,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-22 15:01:00,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:01:00,037 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr112REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:01:00,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:00,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1144692201, now seen corresponding path program 1 times [2021-11-22 15:01:00,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:01:00,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31476798] [2021-11-22 15:01:00,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:00,038 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:01:00,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:01:00,038 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:01:00,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-22 15:01:00,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:00,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-22 15:01:00,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:01:00,285 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 34 treesize of output 26 [2021-11-22 15:01:00,290 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 23 treesize of output 15 [2021-11-22 15:01:00,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:00,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:01:00,423 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 15:01:00,424 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 38 treesize of output 42 [2021-11-22 15:01:00,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:00,800 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:01:00,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [31476798] [2021-11-22 15:01:00,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [31476798] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:01:00,800 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:01:00,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-22 15:01:00,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776573080] [2021-11-22 15:01:00,801 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:01:00,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 15:01:00,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:01:00,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 15:01:00,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:01:00,802 INFO L87 Difference]: Start difference. First operand 500 states and 673 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:02,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:01:02,864 INFO L93 Difference]: Finished difference Result 577 states and 751 transitions. [2021-11-22 15:01:02,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:01:02,865 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-22 15:01:02,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:01:02,867 INFO L225 Difference]: With dead ends: 577 [2021-11-22 15:01:02,867 INFO L226 Difference]: Without dead ends: 577 [2021-11-22 15:01:02,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-22 15:01:02,868 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 155 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:01:02,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 1372 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-22 15:01:02,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-11-22 15:01:02,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 500. [2021-11-22 15:01:02,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 375 states have (on average 1.792) internal successors, (672), 499 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:02,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 672 transitions. [2021-11-22 15:01:02,880 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 672 transitions. Word has length 15 [2021-11-22 15:01:02,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:01:02,880 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 672 transitions. [2021-11-22 15:01:02,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:02,881 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 672 transitions. [2021-11-22 15:01:02,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-22 15:01:02,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:01:02,881 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:01:02,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-22 15:01:03,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:01:03,093 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr106ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:01:03,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:03,093 INFO L85 PathProgramCache]: Analyzing trace with hash 456979480, now seen corresponding path program 1 times [2021-11-22 15:01:03,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:01:03,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [469626234] [2021-11-22 15:01:03,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:03,094 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:01:03,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:01:03,095 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:01:03,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-22 15:01:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:03,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:01:03,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:01:03,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:03,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:01:03,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:03,270 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:01:03,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [469626234] [2021-11-22 15:01:03,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [469626234] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:01:03,271 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:01:03,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-22 15:01:03,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363607473] [2021-11-22 15:01:03,271 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:01:03,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:01:03,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:01:03,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:01:03,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:01:03,272 INFO L87 Difference]: Start difference. First operand 500 states and 672 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:03,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:01:03,367 INFO L93 Difference]: Finished difference Result 499 states and 671 transitions. [2021-11-22 15:01:03,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:01:03,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-22 15:01:03,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:01:03,370 INFO L225 Difference]: With dead ends: 499 [2021-11-22 15:01:03,370 INFO L226 Difference]: Without dead ends: 499 [2021-11-22 15:01:03,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:01:03,373 INFO L933 BasicCegarLoop]: 337 mSDtfsCounter, 668 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:01:03,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [668 Valid, 340 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:01:03,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2021-11-22 15:01:03,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 499. [2021-11-22 15:01:03,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 375 states have (on average 1.7893333333333334) internal successors, (671), 498 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:03,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 671 transitions. [2021-11-22 15:01:03,390 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 671 transitions. Word has length 17 [2021-11-22 15:01:03,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:01:03,391 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 671 transitions. [2021-11-22 15:01:03,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:03,391 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 671 transitions. [2021-11-22 15:01:03,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-22 15:01:03,394 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:01:03,394 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:01:03,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-22 15:01:03,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:01:03,606 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr113REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:01:03,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:03,606 INFO L85 PathProgramCache]: Analyzing trace with hash -514552933, now seen corresponding path program 1 times [2021-11-22 15:01:03,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:01:03,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [821759613] [2021-11-22 15:01:03,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:03,607 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:01:03,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:01:03,608 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:01:03,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-22 15:01:03,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:03,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-22 15:01:03,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:01:03,895 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 15 treesize of output 7 [2021-11-22 15:01:03,902 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 15 treesize of output 7 [2021-11-22 15:01:03,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:03,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:01:04,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:04,172 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:01:04,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [821759613] [2021-11-22 15:01:04,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [821759613] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:01:04,172 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:01:04,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-22 15:01:04,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427085609] [2021-11-22 15:01:04,172 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:01:04,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 15:01:04,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:01:04,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 15:01:04,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:01:04,174 INFO L87 Difference]: Start difference. First operand 499 states and 671 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:05,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:01:05,241 INFO L93 Difference]: Finished difference Result 505 states and 676 transitions. [2021-11-22 15:01:05,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:01:05,242 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-22 15:01:05,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:01:05,245 INFO L225 Difference]: With dead ends: 505 [2021-11-22 15:01:05,245 INFO L226 Difference]: Without dead ends: 505 [2021-11-22 15:01:05,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-22 15:01:05,246 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 29 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:01:05,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 1664 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-22 15:01:05,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-11-22 15:01:05,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 501. [2021-11-22 15:01:05,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 377 states have (on average 1.7851458885941645) internal successors, (673), 500 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:05,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 673 transitions. [2021-11-22 15:01:05,257 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 673 transitions. Word has length 18 [2021-11-22 15:01:05,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:01:05,257 INFO L470 AbstractCegarLoop]: Abstraction has 501 states and 673 transitions. [2021-11-22 15:01:05,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:05,257 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 673 transitions. [2021-11-22 15:01:05,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-22 15:01:05,258 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:01:05,258 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:01:05,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-22 15:01:05,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:01:05,469 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr100ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:01:05,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:05,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1550215578, now seen corresponding path program 1 times [2021-11-22 15:01:05,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:01:05,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [501197227] [2021-11-22 15:01:05,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:05,470 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:01:05,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:01:05,471 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:01:05,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-22 15:01:05,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:05,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:01:05,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:01:05,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:05,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:01:05,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:05,636 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:01:05,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [501197227] [2021-11-22 15:01:05,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [501197227] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:01:05,637 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:01:05,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-22 15:01:05,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511366348] [2021-11-22 15:01:05,637 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:01:05,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:01:05,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:01:05,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:01:05,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:01:05,639 INFO L87 Difference]: Start difference. First operand 501 states and 673 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:05,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:01:05,740 INFO L93 Difference]: Finished difference Result 1561 states and 1955 transitions. [2021-11-22 15:01:05,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:01:05,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-22 15:01:05,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:01:05,746 INFO L225 Difference]: With dead ends: 1561 [2021-11-22 15:01:05,746 INFO L226 Difference]: Without dead ends: 1561 [2021-11-22 15:01:05,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:01:05,747 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 1293 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:01:05,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1293 Valid, 1196 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:01:05,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2021-11-22 15:01:05,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 503. [2021-11-22 15:01:05,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 379 states have (on average 1.7810026385224274) internal successors, (675), 502 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:05,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 675 transitions. [2021-11-22 15:01:05,761 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 675 transitions. Word has length 19 [2021-11-22 15:01:05,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:01:05,761 INFO L470 AbstractCegarLoop]: Abstraction has 503 states and 675 transitions. [2021-11-22 15:01:05,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:05,762 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 675 transitions. [2021-11-22 15:01:05,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-22 15:01:05,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:01:05,762 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:01:05,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-22 15:01:05,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:01:05,965 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:01:05,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:05,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1550215906, now seen corresponding path program 1 times [2021-11-22 15:01:05,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:01:05,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515877684] [2021-11-22 15:01:05,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:05,967 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:01:05,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:01:05,968 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:01:06,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-22 15:01:06,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:06,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-22 15:01:06,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:01:06,090 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 [2021-11-22 15:01:06,098 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 [2021-11-22 15:01:06,176 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 15:01:06,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-11-22 15:01:06,215 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-22 15:01:06,215 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 26 treesize of output 33 [2021-11-22 15:01:06,467 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-22 15:01:06,467 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 42 treesize of output 59 [2021-11-22 15:01:06,524 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 12 treesize of output 14 [2021-11-22 15:01:07,024 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 15:01:07,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 84 [2021-11-22 15:01:07,068 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-11-22 15:01:07,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 80 [2021-11-22 15:01:07,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:07,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:01:22,112 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-22 15:01:22,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 138 treesize of output 132 [2021-11-22 15:01:22,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:22,178 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:01:22,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515877684] [2021-11-22 15:01:22,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [515877684] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:01:22,179 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:01:22,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 16 [2021-11-22 15:01:22,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746132794] [2021-11-22 15:01:22,179 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:01:22,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-22 15:01:22,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:01:22,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-22 15:01:22,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=188, Unknown=4, NotChecked=0, Total=272 [2021-11-22 15:01:22,180 INFO L87 Difference]: Start difference. First operand 503 states and 675 transitions. Second operand has 17 states, 16 states have (on average 2.3125) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:23,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:01:23,298 INFO L93 Difference]: Finished difference Result 506 states and 678 transitions. [2021-11-22 15:01:23,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 15:01:23,298 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.3125) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-22 15:01:23,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:01:23,301 INFO L225 Difference]: With dead ends: 506 [2021-11-22 15:01:23,301 INFO L226 Difference]: Without dead ends: 506 [2021-11-22 15:01:23,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=113, Invalid=263, Unknown=4, NotChecked=0, Total=380 [2021-11-22 15:01:23,302 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 28 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 408 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-22 15:01:23,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 1741 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 427 Invalid, 0 Unknown, 408 Unchecked, 0.9s Time] [2021-11-22 15:01:23,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-11-22 15:01:23,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 506. [2021-11-22 15:01:23,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 382 states have (on average 1.774869109947644) internal successors, (678), 505 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:23,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 678 transitions. [2021-11-22 15:01:23,312 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 678 transitions. Word has length 19 [2021-11-22 15:01:23,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:01:23,313 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 678 transitions. [2021-11-22 15:01:23,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.3125) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:23,313 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 678 transitions. [2021-11-22 15:01:23,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-22 15:01:23,313 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:01:23,314 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:01:23,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-22 15:01:23,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:01:23,525 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr100ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:01:23,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:23,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1550155996, now seen corresponding path program 1 times [2021-11-22 15:01:23,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:01:23,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130561260] [2021-11-22 15:01:23,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:23,526 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:01:23,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:01:23,527 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:01:23,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-22 15:01:23,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:23,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:01:23,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:01:23,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:23,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:01:23,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:23,669 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:01:23,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130561260] [2021-11-22 15:01:23,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [130561260] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:01:23,670 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:01:23,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-22 15:01:23,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8540073] [2021-11-22 15:01:23,670 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:01:23,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:01:23,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:01:23,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:01:23,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:01:23,671 INFO L87 Difference]: Start difference. First operand 506 states and 678 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:23,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:01:23,724 INFO L93 Difference]: Finished difference Result 509 states and 677 transitions. [2021-11-22 15:01:23,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:01:23,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-22 15:01:23,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:01:23,727 INFO L225 Difference]: With dead ends: 509 [2021-11-22 15:01:23,727 INFO L226 Difference]: Without dead ends: 509 [2021-11-22 15:01:23,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:01:23,728 INFO L933 BasicCegarLoop]: 353 mSDtfsCounter, 661 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:01:23,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [661 Valid, 377 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:01:23,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2021-11-22 15:01:23,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 505. [2021-11-22 15:01:23,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 382 states have (on average 1.7643979057591623) internal successors, (674), 504 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:23,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 674 transitions. [2021-11-22 15:01:23,738 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 674 transitions. Word has length 19 [2021-11-22 15:01:23,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:01:23,738 INFO L470 AbstractCegarLoop]: Abstraction has 505 states and 674 transitions. [2021-11-22 15:01:23,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:23,739 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 674 transitions. [2021-11-22 15:01:23,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-22 15:01:23,739 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:01:23,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:01:23,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-22 15:01:23,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:01:23,951 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:01:23,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:23,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1550156324, now seen corresponding path program 1 times [2021-11-22 15:01:23,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:01:23,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2121243273] [2021-11-22 15:01:23,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:23,952 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:01:23,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:01:23,953 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:01:23,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-22 15:01:24,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:24,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 15:01:24,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:01:24,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:24,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:01:24,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:24,107 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:01:24,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2121243273] [2021-11-22 15:01:24,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2121243273] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:01:24,107 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:01:24,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-22 15:01:24,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104134394] [2021-11-22 15:01:24,108 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:01:24,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:01:24,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:01:24,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:01:24,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:01:24,109 INFO L87 Difference]: Start difference. First operand 505 states and 674 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:24,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:01:24,202 INFO L93 Difference]: Finished difference Result 723 states and 793 transitions. [2021-11-22 15:01:24,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:01:24,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-22 15:01:24,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:01:24,205 INFO L225 Difference]: With dead ends: 723 [2021-11-22 15:01:24,205 INFO L226 Difference]: Without dead ends: 723 [2021-11-22 15:01:24,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:01:24,206 INFO L933 BasicCegarLoop]: 662 mSDtfsCounter, 397 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:01:24,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 1575 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:01:24,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-11-22 15:01:24,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 357. [2021-11-22 15:01:24,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 234 states have (on average 1.6965811965811965) internal successors, (397), 356 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:24,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 397 transitions. [2021-11-22 15:01:24,214 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 397 transitions. Word has length 19 [2021-11-22 15:01:24,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:01:24,214 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 397 transitions. [2021-11-22 15:01:24,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:24,215 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 397 transitions. [2021-11-22 15:01:24,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-22 15:01:24,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:01:24,215 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:01:24,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-11-22 15:01:24,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:01:24,426 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr108ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:01:24,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:24,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1070632026, now seen corresponding path program 1 times [2021-11-22 15:01:24,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:01:24,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868805720] [2021-11-22 15:01:24,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:24,427 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:01:24,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:01:24,428 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:01:24,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-22 15:01:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:24,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 15:01:24,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:01:24,502 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 [2021-11-22 15:01:24,539 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-22 15:01:24,539 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 23 treesize of output 30 [2021-11-22 15:01:24,725 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-11-22 15:01:24,725 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 32 treesize of output 35 [2021-11-22 15:01:24,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:24,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:01:26,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:26,924 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:01:26,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868805720] [2021-11-22 15:01:26,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [868805720] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:01:26,925 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:01:26,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-22 15:01:26,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611908097] [2021-11-22 15:01:26,925 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:01:26,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 15:01:26,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:01:26,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 15:01:26,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=63, Unknown=1, NotChecked=0, Total=90 [2021-11-22 15:01:26,926 INFO L87 Difference]: Start difference. First operand 357 states and 397 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:34,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:01:34,392 INFO L93 Difference]: Finished difference Result 667 states and 735 transitions. [2021-11-22 15:01:34,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 15:01:34,394 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-22 15:01:34,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:01:34,396 INFO L225 Difference]: With dead ends: 667 [2021-11-22 15:01:34,396 INFO L226 Difference]: Without dead ends: 667 [2021-11-22 15:01:34,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=52, Invalid=128, Unknown=2, NotChecked=0, Total=182 [2021-11-22 15:01:34,397 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 1174 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 244 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:01:34,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1174 Valid, 1018 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 602 Invalid, 0 Unknown, 244 Unchecked, 1.3s Time] [2021-11-22 15:01:34,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2021-11-22 15:01:34,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 360. [2021-11-22 15:01:34,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 237 states have (on average 1.6877637130801688) internal successors, (400), 359 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:34,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 400 transitions. [2021-11-22 15:01:34,404 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 400 transitions. Word has length 19 [2021-11-22 15:01:34,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:01:34,404 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 400 transitions. [2021-11-22 15:01:34,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:34,405 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 400 transitions. [2021-11-22 15:01:34,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-22 15:01:34,405 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:01:34,405 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:01:34,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-22 15:01:34,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:01:34,618 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:01:34,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:34,618 INFO L85 PathProgramCache]: Analyzing trace with hash -870157536, now seen corresponding path program 1 times [2021-11-22 15:01:34,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:01:34,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2100964064] [2021-11-22 15:01:34,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:34,619 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:01:34,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:01:34,619 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:01:34,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-22 15:01:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:34,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 15:01:34,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:01:34,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:34,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:01:34,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:34,836 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:01:34,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2100964064] [2021-11-22 15:01:34,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2100964064] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:01:34,837 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:01:34,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-22 15:01:34,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097664571] [2021-11-22 15:01:34,837 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:01:34,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:01:34,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:01:34,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:01:34,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:01:34,838 INFO L87 Difference]: Start difference. First operand 360 states and 400 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:34,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:01:34,968 INFO L93 Difference]: Finished difference Result 698 states and 764 transitions. [2021-11-22 15:01:34,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:01:34,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-22 15:01:34,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:01:34,972 INFO L225 Difference]: With dead ends: 698 [2021-11-22 15:01:34,972 INFO L226 Difference]: Without dead ends: 698 [2021-11-22 15:01:34,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:01:34,973 INFO L933 BasicCegarLoop]: 611 mSDtfsCounter, 426 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:01:34,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [426 Valid, 1519 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:01:34,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2021-11-22 15:01:34,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 346. [2021-11-22 15:01:34,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 224 states have (on average 1.7053571428571428) internal successors, (382), 345 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:34,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 382 transitions. [2021-11-22 15:01:34,982 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 382 transitions. Word has length 19 [2021-11-22 15:01:34,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:01:34,982 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 382 transitions. [2021-11-22 15:01:34,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:34,983 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 382 transitions. [2021-11-22 15:01:34,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 15:01:34,983 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:01:34,983 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:01:34,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-22 15:01:35,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:01:35,195 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr101ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:01:35,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:35,195 INFO L85 PathProgramCache]: Analyzing trace with hash -810195136, now seen corresponding path program 1 times [2021-11-22 15:01:35,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:01:35,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035396317] [2021-11-22 15:01:35,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:35,196 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:01:35,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:01:35,197 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:01:35,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-22 15:01:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:35,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 15:01:35,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:01:35,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:35,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:01:35,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:35,636 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:01:35,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1035396317] [2021-11-22 15:01:35,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1035396317] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:01:35,637 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:01:35,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 7 [2021-11-22 15:01:35,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683290421] [2021-11-22 15:01:35,637 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:01:35,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 15:01:35,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:01:35,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 15:01:35,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:01:35,638 INFO L87 Difference]: Start difference. First operand 346 states and 382 transitions. Second operand has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:35,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:01:35,897 INFO L93 Difference]: Finished difference Result 716 states and 791 transitions. [2021-11-22 15:01:35,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:01:35,897 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-22 15:01:35,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:01:35,901 INFO L225 Difference]: With dead ends: 716 [2021-11-22 15:01:35,901 INFO L226 Difference]: Without dead ends: 716 [2021-11-22 15:01:35,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:01:35,902 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 441 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 118 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:01:35,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [441 Valid, 1697 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 129 Invalid, 0 Unknown, 118 Unchecked, 0.2s Time] [2021-11-22 15:01:35,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-11-22 15:01:35,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 348. [2021-11-22 15:01:35,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 226 states have (on average 1.6991150442477876) internal successors, (384), 347 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:35,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 384 transitions. [2021-11-22 15:01:35,913 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 384 transitions. Word has length 20 [2021-11-22 15:01:35,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:01:35,913 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 384 transitions. [2021-11-22 15:01:35,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:35,914 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 384 transitions. [2021-11-22 15:01:35,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 15:01:35,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:01:35,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:01:35,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-22 15:01:36,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:01:36,129 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr131ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:01:36,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:36,129 INFO L85 PathProgramCache]: Analyzing trace with hash -564126738, now seen corresponding path program 1 times [2021-11-22 15:01:36,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:01:36,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1952838870] [2021-11-22 15:01:36,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:36,130 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:01:36,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:01:36,131 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:01:36,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-22 15:01:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:36,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 15:01:36,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:01:36,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:36,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:01:40,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:40,746 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:01:40,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1952838870] [2021-11-22 15:01:40,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1952838870] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:01:40,746 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:01:40,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-22 15:01:40,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782413679] [2021-11-22 15:01:40,747 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:01:40,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:01:40,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:01:40,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:01:40,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=50, Unknown=2, NotChecked=0, Total=72 [2021-11-22 15:01:40,748 INFO L87 Difference]: Start difference. First operand 348 states and 384 transitions. Second operand has 9 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:41,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:01:41,830 INFO L93 Difference]: Finished difference Result 351 states and 386 transitions. [2021-11-22 15:01:41,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 15:01:41,831 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-22 15:01:41,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:01:41,834 INFO L225 Difference]: With dead ends: 351 [2021-11-22 15:01:41,834 INFO L226 Difference]: Without dead ends: 337 [2021-11-22 15:01:41,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=32, Invalid=76, Unknown=2, NotChecked=0, Total=110 [2021-11-22 15:01:41,835 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 8 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 139 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:01:41,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 1369 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 588 Invalid, 0 Unknown, 139 Unchecked, 1.0s Time] [2021-11-22 15:01:41,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-11-22 15:01:41,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2021-11-22 15:01:41,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 215 states have (on average 1.7302325581395348) internal successors, (372), 336 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:41,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 372 transitions. [2021-11-22 15:01:41,843 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 372 transitions. Word has length 20 [2021-11-22 15:01:41,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:01:41,843 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 372 transitions. [2021-11-22 15:01:41,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:41,843 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 372 transitions. [2021-11-22 15:01:41,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-22 15:01:41,844 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:01:41,844 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:01:41,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-22 15:01:42,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:01:42,055 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr102ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:01:42,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:42,055 INFO L85 PathProgramCache]: Analyzing trace with hash 653755046, now seen corresponding path program 1 times [2021-11-22 15:01:42,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:01:42,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005192701] [2021-11-22 15:01:42,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:42,056 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:01:42,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:01:42,056 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:01:42,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-22 15:01:42,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:42,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:01:42,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:01:42,140 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 [2021-11-22 15:01:42,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:42,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:01:42,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:42,241 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:01:42,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005192701] [2021-11-22 15:01:42,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2005192701] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:01:42,241 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:01:42,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-22 15:01:42,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207985687] [2021-11-22 15:01:42,241 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:01:42,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:01:42,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:01:42,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:01:42,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:01:42,242 INFO L87 Difference]: Start difference. First operand 337 states and 372 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:42,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:01:42,974 INFO L93 Difference]: Finished difference Result 533 states and 585 transitions. [2021-11-22 15:01:42,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:01:42,976 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-22 15:01:42,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:01:42,978 INFO L225 Difference]: With dead ends: 533 [2021-11-22 15:01:42,978 INFO L226 Difference]: Without dead ends: 533 [2021-11-22 15:01:42,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:01:42,979 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 548 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 15:01:42,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [548 Valid, 557 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 15:01:42,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-11-22 15:01:42,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 338. [2021-11-22 15:01:42,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 216 states have (on average 1.7268518518518519) internal successors, (373), 337 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:42,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 373 transitions. [2021-11-22 15:01:42,987 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 373 transitions. Word has length 21 [2021-11-22 15:01:42,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:01:42,988 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 373 transitions. [2021-11-22 15:01:42,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:42,988 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 373 transitions. [2021-11-22 15:01:42,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-22 15:01:42,989 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:01:42,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:01:43,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-22 15:01:43,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:01:43,203 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr109REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:01:43,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:43,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1914757987, now seen corresponding path program 1 times [2021-11-22 15:01:43,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:01:43,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [691524447] [2021-11-22 15:01:43,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:43,205 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:01:43,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:01:43,206 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:01:43,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-11-22 15:01:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:43,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-22 15:01:43,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:01:43,410 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-22 15:01:43,410 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 21 treesize of output 28 [2021-11-22 15:01:43,525 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-22 15:01:43,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 47 [2021-11-22 15:01:43,859 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-11-22 15:01:43,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 44 treesize of output 53 [2021-11-22 15:01:44,018 INFO L354 Elim1Store]: treesize reduction 42, result has 33.3 percent of original size [2021-11-22 15:01:44,019 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 38 treesize of output 51 [2021-11-22 15:01:44,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:44,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:01:56,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:56,573 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:01:56,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [691524447] [2021-11-22 15:01:56,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [691524447] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:01:56,574 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:01:56,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-22 15:01:56,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39316297] [2021-11-22 15:01:56,575 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:01:56,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-22 15:01:56,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:01:56,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-22 15:01:56,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=155, Unknown=3, NotChecked=0, Total=240 [2021-11-22 15:01:56,576 INFO L87 Difference]: Start difference. First operand 338 states and 373 transitions. Second operand has 16 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:14,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:14,012 INFO L93 Difference]: Finished difference Result 535 states and 588 transitions. [2021-11-22 15:02:14,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 15:02:14,013 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-22 15:02:14,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:14,016 INFO L225 Difference]: With dead ends: 535 [2021-11-22 15:02:14,016 INFO L226 Difference]: Without dead ends: 535 [2021-11-22 15:02:14,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 28.6s TimeCoverageRelationStatistics Valid=132, Invalid=239, Unknown=9, NotChecked=0, Total=380 [2021-11-22 15:02:14,017 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 922 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 494 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:14,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [922 Valid, 991 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 347 Invalid, 0 Unknown, 494 Unchecked, 1.2s Time] [2021-11-22 15:02:14,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-11-22 15:02:14,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 340. [2021-11-22 15:02:14,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 218 states have (on average 1.724770642201835) internal successors, (376), 339 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:14,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 376 transitions. [2021-11-22 15:02:14,024 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 376 transitions. Word has length 21 [2021-11-22 15:02:14,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:14,025 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 376 transitions. [2021-11-22 15:02:14,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:14,025 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 376 transitions. [2021-11-22 15:02:14,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-22 15:02:14,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:14,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:02:14,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-11-22 15:02:14,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:02:14,240 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr110REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:02:14,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:14,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1914757986, now seen corresponding path program 1 times [2021-11-22 15:02:14,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:02:14,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113863462] [2021-11-22 15:02:14,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:14,241 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:02:14,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:02:14,242 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:02:14,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-22 15:02:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:14,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-22 15:02:14,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:02:14,412 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 15:02:14,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2021-11-22 15:02:14,531 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 15:02:14,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-11-22 15:02:15,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:15,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:02:15,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:15,906 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:02:15,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1113863462] [2021-11-22 15:02:15,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1113863462] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:15,906 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:15,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 9 [2021-11-22 15:02:15,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186675690] [2021-11-22 15:02:15,906 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:15,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-22 15:02:15,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:02:15,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-22 15:02:15,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-22 15:02:15,907 INFO L87 Difference]: Start difference. First operand 340 states and 376 transitions. Second operand has 11 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:15,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:15,937 INFO L93 Difference]: Finished difference Result 340 states and 375 transitions. [2021-11-22 15:02:15,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:02:15,937 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-22 15:02:15,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:15,939 INFO L225 Difference]: With dead ends: 340 [2021-11-22 15:02:15,939 INFO L226 Difference]: Without dead ends: 340 [2021-11-22 15:02:15,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-22 15:02:15,940 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 22 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1453 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 523 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:15,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 1453 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 523 Unchecked, 0.0s Time] [2021-11-22 15:02:15,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-11-22 15:02:15,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2021-11-22 15:02:15,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 218 states have (on average 1.7201834862385321) internal successors, (375), 339 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:15,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 375 transitions. [2021-11-22 15:02:15,947 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 375 transitions. Word has length 21 [2021-11-22 15:02:15,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:15,947 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 375 transitions. [2021-11-22 15:02:15,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:15,948 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 375 transitions. [2021-11-22 15:02:15,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-22 15:02:15,948 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:15,948 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:02:15,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-22 15:02:16,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:02:16,149 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr104ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:02:16,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:16,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1193389640, now seen corresponding path program 1 times [2021-11-22 15:02:16,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:02:16,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995797046] [2021-11-22 15:02:16,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:16,150 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:02:16,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:02:16,151 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:02:16,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-22 15:02:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:16,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 15:02:16,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:02:16,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:16,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:02:16,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:16,806 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:02:16,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995797046] [2021-11-22 15:02:16,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995797046] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:16,807 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:16,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 7 [2021-11-22 15:02:16,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137227512] [2021-11-22 15:02:16,807 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:16,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 15:02:16,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:02:16,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 15:02:16,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:02:16,809 INFO L87 Difference]: Start difference. First operand 340 states and 375 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:16,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:16,958 INFO L93 Difference]: Finished difference Result 557 states and 618 transitions. [2021-11-22 15:02:16,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:02:16,959 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-22 15:02:16,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:16,961 INFO L225 Difference]: With dead ends: 557 [2021-11-22 15:02:16,961 INFO L226 Difference]: Without dead ends: 557 [2021-11-22 15:02:16,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:02:16,962 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 336 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 1989 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 92 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:16,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 1989 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 92 Unchecked, 0.1s Time] [2021-11-22 15:02:16,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-11-22 15:02:16,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 342. [2021-11-22 15:02:16,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 220 states have (on average 1.7136363636363636) internal successors, (377), 341 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:16,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 377 transitions. [2021-11-22 15:02:16,971 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 377 transitions. Word has length 23 [2021-11-22 15:02:16,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:16,972 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 377 transitions. [2021-11-22 15:02:16,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:16,972 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 377 transitions. [2021-11-22 15:02:16,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-22 15:02:16,973 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:16,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:02:16,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-11-22 15:02:17,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:02:17,187 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr111REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:02:17,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:17,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1836408546, now seen corresponding path program 1 times [2021-11-22 15:02:17,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:02:17,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326488132] [2021-11-22 15:02:17,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:17,188 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:02:17,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:02:17,197 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:02:17,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-22 15:02:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:17,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-22 15:02:17,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:02:17,463 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-22 15:02:17,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 26 [2021-11-22 15:02:17,660 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 22 treesize of output 21 [2021-11-22 15:02:17,777 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 [2021-11-22 15:02:17,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:17,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:02:17,962 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-11-22 15:02:17,962 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 37 treesize of output 36 [2021-11-22 15:02:18,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:18,215 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:02:18,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326488132] [2021-11-22 15:02:18,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326488132] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:18,216 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:18,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 13 [2021-11-22 15:02:18,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385983749] [2021-11-22 15:02:18,216 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:18,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-22 15:02:18,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:02:18,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-22 15:02:18,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-22 15:02:18,218 INFO L87 Difference]: Start difference. First operand 342 states and 377 transitions. Second operand has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:21,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:21,748 INFO L93 Difference]: Finished difference Result 344 states and 380 transitions. [2021-11-22 15:02:21,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 15:02:21,749 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-22 15:02:21,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:21,751 INFO L225 Difference]: With dead ends: 344 [2021-11-22 15:02:21,751 INFO L226 Difference]: Without dead ends: 344 [2021-11-22 15:02:21,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-11-22 15:02:21,752 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 28 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1898 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 295 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:21,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 1898 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 426 Invalid, 0 Unknown, 295 Unchecked, 3.4s Time] [2021-11-22 15:02:21,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-11-22 15:02:21,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2021-11-22 15:02:21,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 222 states have (on average 1.7117117117117118) internal successors, (380), 343 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:21,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 380 transitions. [2021-11-22 15:02:21,761 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 380 transitions. Word has length 23 [2021-11-22 15:02:21,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:21,761 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 380 transitions. [2021-11-22 15:02:21,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:21,762 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 380 transitions. [2021-11-22 15:02:21,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-22 15:02:21,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:21,763 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:02:21,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-11-22 15:02:21,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:02:21,977 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr112REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:02:21,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:21,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1836408545, now seen corresponding path program 1 times [2021-11-22 15:02:21,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:02:21,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195829771] [2021-11-22 15:02:21,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:21,978 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:02:21,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:02:21,980 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:02:21,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-11-22 15:02:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:22,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-22 15:02:22,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:02:22,316 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-22 15:02:22,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 44 [2021-11-22 15:02:22,355 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-22 15:02:22,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 41 [2021-11-22 15:02:22,690 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 30 treesize of output 29 [2021-11-22 15:02:22,827 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 53 treesize of output 45 [2021-11-22 15:02:22,836 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 42 treesize of output 34 [2021-11-22 15:02:22,853 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 15:02:22,854 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 31 treesize of output 31 [2021-11-22 15:02:22,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:22,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:02:23,123 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 15:02:23,123 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 38 treesize of output 42 [2021-11-22 15:02:23,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-11-22 15:02:24,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:24,480 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:02:24,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195829771] [2021-11-22 15:02:24,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195829771] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:24,481 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:24,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 13 [2021-11-22 15:02:24,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808674368] [2021-11-22 15:02:24,481 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:24,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-22 15:02:24,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:02:24,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-22 15:02:24,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-22 15:02:24,483 INFO L87 Difference]: Start difference. First operand 344 states and 380 transitions. Second operand has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:30,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:30,210 INFO L93 Difference]: Finished difference Result 421 states and 458 transitions. [2021-11-22 15:02:30,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 15:02:30,211 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-22 15:02:30,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:30,213 INFO L225 Difference]: With dead ends: 421 [2021-11-22 15:02:30,213 INFO L226 Difference]: Without dead ends: 421 [2021-11-22 15:02:30,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-11-22 15:02:30,214 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 102 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 2163 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:30,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 2163 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 792 Invalid, 0 Unknown, 160 Unchecked, 5.6s Time] [2021-11-22 15:02:30,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-11-22 15:02:30,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 344. [2021-11-22 15:02:30,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 222 states have (on average 1.7072072072072073) internal successors, (379), 343 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:30,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 379 transitions. [2021-11-22 15:02:30,221 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 379 transitions. Word has length 23 [2021-11-22 15:02:30,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:30,221 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 379 transitions. [2021-11-22 15:02:30,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:30,222 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 379 transitions. [2021-11-22 15:02:30,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-22 15:02:30,222 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:30,223 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:02:30,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-11-22 15:02:30,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:02:30,429 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr97ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:02:30,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:30,441 INFO L85 PathProgramCache]: Analyzing trace with hash 694912826, now seen corresponding path program 1 times [2021-11-22 15:02:30,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:02:30,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573813420] [2021-11-22 15:02:30,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:30,442 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:02:30,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:02:30,443 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:02:30,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-11-22 15:02:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:30,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:02:30,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:02:30,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:30,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:02:30,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:30,611 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:02:30,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573813420] [2021-11-22 15:02:30,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1573813420] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:30,612 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:30,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-22 15:02:30,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313164429] [2021-11-22 15:02:30,612 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:30,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:02:30,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:02:30,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:02:30,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:02:30,614 INFO L87 Difference]: Start difference. First operand 344 states and 379 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:30,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:30,757 INFO L93 Difference]: Finished difference Result 1195 states and 1304 transitions. [2021-11-22 15:02:30,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:02:30,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-22 15:02:30,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:30,764 INFO L225 Difference]: With dead ends: 1195 [2021-11-22 15:02:30,765 INFO L226 Difference]: Without dead ends: 1195 [2021-11-22 15:02:30,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:02:30,766 INFO L933 BasicCegarLoop]: 405 mSDtfsCounter, 1246 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1246 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:30,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1246 Valid, 1190 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:02:30,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2021-11-22 15:02:30,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 346. [2021-11-22 15:02:30,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 224 states have (on average 1.7008928571428572) internal successors, (381), 345 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:30,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 381 transitions. [2021-11-22 15:02:30,779 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 381 transitions. Word has length 24 [2021-11-22 15:02:30,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:30,779 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 381 transitions. [2021-11-22 15:02:30,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:30,780 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 381 transitions. [2021-11-22 15:02:30,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-22 15:02:30,780 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:30,781 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:02:30,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2021-11-22 15:02:31,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:02:31,005 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:02:31,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:31,006 INFO L85 PathProgramCache]: Analyzing trace with hash 694912521, now seen corresponding path program 1 times [2021-11-22 15:02:31,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:02:31,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771229694] [2021-11-22 15:02:31,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:31,007 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:02:31,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:02:31,008 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:02:31,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-11-22 15:02:31,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:31,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 15:02:31,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:02:31,256 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 15:02:31,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-11-22 15:02:31,268 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 15:02:31,269 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 [2021-11-22 15:02:31,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:31,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:02:31,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 51 [2021-11-22 15:02:31,585 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-22 15:02:31,586 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 51 treesize of output 50 [2021-11-22 15:02:32,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:32,018 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:02:32,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771229694] [2021-11-22 15:02:32,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [771229694] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:32,018 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:32,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-22 15:02:32,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217684260] [2021-11-22 15:02:32,019 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:32,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 15:02:32,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:02:32,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 15:02:32,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-22 15:02:32,020 INFO L87 Difference]: Start difference. First operand 346 states and 381 transitions. Second operand has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:33,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:33,120 INFO L93 Difference]: Finished difference Result 429 states and 465 transitions. [2021-11-22 15:02:33,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 15:02:33,122 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-22 15:02:33,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:33,124 INFO L225 Difference]: With dead ends: 429 [2021-11-22 15:02:33,124 INFO L226 Difference]: Without dead ends: 429 [2021-11-22 15:02:33,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:02:33,126 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 1129 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 136 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:33,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1129 Valid, 487 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 322 Invalid, 0 Unknown, 136 Unchecked, 1.0s Time] [2021-11-22 15:02:33,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-11-22 15:02:33,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 345. [2021-11-22 15:02:33,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 224 states have (on average 1.6964285714285714) internal successors, (380), 344 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:33,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 380 transitions. [2021-11-22 15:02:33,133 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 380 transitions. Word has length 24 [2021-11-22 15:02:33,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:33,134 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 380 transitions. [2021-11-22 15:02:33,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:33,134 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 380 transitions. [2021-11-22 15:02:33,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-22 15:02:33,134 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:33,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:02:33,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-11-22 15:02:33,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:02:33,335 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr97ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:02:33,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:33,336 INFO L85 PathProgramCache]: Analyzing trace with hash 694972408, now seen corresponding path program 1 times [2021-11-22 15:02:33,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:02:33,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [491357554] [2021-11-22 15:02:33,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:33,337 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:02:33,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:02:33,338 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:02:33,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-11-22 15:02:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:33,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:02:33,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:02:33,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:33,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:02:33,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:33,530 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:02:33,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [491357554] [2021-11-22 15:02:33,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [491357554] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:33,530 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:33,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-22 15:02:33,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397867495] [2021-11-22 15:02:33,530 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:33,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:02:33,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:02:33,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:02:33,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:02:33,532 INFO L87 Difference]: Start difference. First operand 345 states and 380 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:33,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:33,600 INFO L93 Difference]: Finished difference Result 387 states and 422 transitions. [2021-11-22 15:02:33,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:02:33,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-22 15:02:33,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:33,602 INFO L225 Difference]: With dead ends: 387 [2021-11-22 15:02:33,602 INFO L226 Difference]: Without dead ends: 387 [2021-11-22 15:02:33,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:02:33,602 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 647 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:33,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [647 Valid, 460 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:02:33,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-11-22 15:02:33,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 344. [2021-11-22 15:02:33,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 224 states have (on average 1.6875) internal successors, (378), 343 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:33,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 378 transitions. [2021-11-22 15:02:33,609 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 378 transitions. Word has length 24 [2021-11-22 15:02:33,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:33,610 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 378 transitions. [2021-11-22 15:02:33,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:33,610 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 378 transitions. [2021-11-22 15:02:33,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-22 15:02:33,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:33,611 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:02:33,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-11-22 15:02:33,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:02:33,823 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr105ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:02:33,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:33,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1659626331, now seen corresponding path program 1 times [2021-11-22 15:02:33,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:02:33,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753412856] [2021-11-22 15:02:33,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:33,824 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:02:33,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:02:33,826 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:02:33,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-11-22 15:02:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:33,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 15:02:33,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:02:33,951 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 [2021-11-22 15:02:33,989 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 15:02:33,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-22 15:02:34,120 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-22 15:02:34,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-22 15:02:34,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:34,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:02:34,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-11-22 15:02:34,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:34,371 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:02:34,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753412856] [2021-11-22 15:02:34,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [753412856] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:34,371 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:34,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 7 [2021-11-22 15:02:34,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977460357] [2021-11-22 15:02:34,372 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:34,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 15:02:34,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:02:34,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 15:02:34,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:02:34,373 INFO L87 Difference]: Start difference. First operand 344 states and 378 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:35,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:35,583 INFO L93 Difference]: Finished difference Result 628 states and 688 transitions. [2021-11-22 15:02:35,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 15:02:35,585 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-22 15:02:35,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:35,587 INFO L225 Difference]: With dead ends: 628 [2021-11-22 15:02:35,587 INFO L226 Difference]: Without dead ends: 628 [2021-11-22 15:02:35,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:02:35,588 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 1394 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 92 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:35,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1394 Valid, 989 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 464 Invalid, 0 Unknown, 92 Unchecked, 1.1s Time] [2021-11-22 15:02:35,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-11-22 15:02:35,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 345. [2021-11-22 15:02:35,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 225 states have (on average 1.6844444444444444) internal successors, (379), 344 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:35,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 379 transitions. [2021-11-22 15:02:35,597 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 379 transitions. Word has length 24 [2021-11-22 15:02:35,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:35,597 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 379 transitions. [2021-11-22 15:02:35,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:35,598 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 379 transitions. [2021-11-22 15:02:35,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-22 15:02:35,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:35,598 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 15:02:35,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-11-22 15:02:35,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:02:35,816 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:02:35,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:35,817 INFO L85 PathProgramCache]: Analyzing trace with hash 67451689, now seen corresponding path program 1 times [2021-11-22 15:02:35,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:02:35,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2052928420] [2021-11-22 15:02:35,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:35,817 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:02:35,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:02:35,821 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:02:35,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-11-22 15:02:35,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:35,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 15:02:35,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:02:35,968 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 [2021-11-22 15:02:36,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:36,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:02:36,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:36,195 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:02:36,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2052928420] [2021-11-22 15:02:36,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2052928420] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:36,195 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:36,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-22 15:02:36,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483105702] [2021-11-22 15:02:36,196 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:36,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 15:02:36,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:02:36,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 15:02:36,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:02:36,197 INFO L87 Difference]: Start difference. First operand 345 states and 379 transitions. Second operand has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:39,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:39,018 INFO L93 Difference]: Finished difference Result 750 states and 807 transitions. [2021-11-22 15:02:39,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 15:02:39,021 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-22 15:02:39,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:39,023 INFO L225 Difference]: With dead ends: 750 [2021-11-22 15:02:39,023 INFO L226 Difference]: Without dead ends: 750 [2021-11-22 15:02:39,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-11-22 15:02:39,024 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 849 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 1833 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:39,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [849 Valid, 1833 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-22 15:02:39,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2021-11-22 15:02:39,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 347. [2021-11-22 15:02:39,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 227 states have (on average 1.6828193832599119) internal successors, (382), 346 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:39,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 382 transitions. [2021-11-22 15:02:39,031 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 382 transitions. Word has length 25 [2021-11-22 15:02:39,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:39,031 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 382 transitions. [2021-11-22 15:02:39,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:39,031 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 382 transitions. [2021-11-22 15:02:39,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-22 15:02:39,032 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:39,032 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 15:02:39,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-11-22 15:02:39,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:02:39,233 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:02:39,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:39,233 INFO L85 PathProgramCache]: Analyzing trace with hash 67451688, now seen corresponding path program 1 times [2021-11-22 15:02:39,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:02:39,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [673273850] [2021-11-22 15:02:39,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:39,234 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:02:39,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:02:39,235 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:02:39,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-11-22 15:02:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:39,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:02:39,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:02:39,374 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 [2021-11-22 15:02:39,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:39,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:02:39,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:39,446 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:02:39,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [673273850] [2021-11-22 15:02:39,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [673273850] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:39,446 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:39,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-22 15:02:39,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896657441] [2021-11-22 15:02:39,447 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:39,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:02:39,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:02:39,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:02:39,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:02:39,448 INFO L87 Difference]: Start difference. First operand 347 states and 382 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:40,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:40,228 INFO L93 Difference]: Finished difference Result 526 states and 579 transitions. [2021-11-22 15:02:40,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:02:40,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-22 15:02:40,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:40,232 INFO L225 Difference]: With dead ends: 526 [2021-11-22 15:02:40,232 INFO L226 Difference]: Without dead ends: 526 [2021-11-22 15:02:40,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:02:40,232 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 510 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:40,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 568 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-22 15:02:40,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-11-22 15:02:40,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 347. [2021-11-22 15:02:40,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 227 states have (on average 1.6784140969162995) internal successors, (381), 346 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:40,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 381 transitions. [2021-11-22 15:02:40,240 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 381 transitions. Word has length 25 [2021-11-22 15:02:40,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:40,240 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 381 transitions. [2021-11-22 15:02:40,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:40,240 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 381 transitions. [2021-11-22 15:02:40,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-22 15:02:40,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:40,241 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 15:02:40,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-11-22 15:02:40,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:02:40,442 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr98ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:02:40,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:40,442 INFO L85 PathProgramCache]: Analyzing trace with hash 69308645, now seen corresponding path program 1 times [2021-11-22 15:02:40,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:02:40,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1774216576] [2021-11-22 15:02:40,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:40,443 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:02:40,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:02:40,444 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:02:40,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-11-22 15:02:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:40,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 15:02:40,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:02:40,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:40,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:02:40,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:40,936 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:02:40,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1774216576] [2021-11-22 15:02:40,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1774216576] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:40,937 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:40,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 7 [2021-11-22 15:02:40,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047248135] [2021-11-22 15:02:40,937 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:40,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 15:02:40,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:02:40,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 15:02:40,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:02:40,948 INFO L87 Difference]: Start difference. First operand 347 states and 381 transitions. Second operand has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:41,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:41,149 INFO L93 Difference]: Finished difference Result 958 states and 1065 transitions. [2021-11-22 15:02:41,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 15:02:41,149 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-22 15:02:41,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:41,152 INFO L225 Difference]: With dead ends: 958 [2021-11-22 15:02:41,153 INFO L226 Difference]: Without dead ends: 958 [2021-11-22 15:02:41,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:02:41,154 INFO L933 BasicCegarLoop]: 653 mSDtfsCounter, 1320 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 185 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:41,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1320 Valid, 1792 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 61 Invalid, 0 Unknown, 185 Unchecked, 0.1s Time] [2021-11-22 15:02:41,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2021-11-22 15:02:41,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 347. [2021-11-22 15:02:41,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 227 states have (on average 1.6740088105726871) internal successors, (380), 346 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:41,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 380 transitions. [2021-11-22 15:02:41,163 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 380 transitions. Word has length 25 [2021-11-22 15:02:41,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:41,163 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 380 transitions. [2021-11-22 15:02:41,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:41,163 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 380 transitions. [2021-11-22 15:02:41,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-22 15:02:41,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:41,164 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 15:02:41,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-11-22 15:02:41,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:02:41,366 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:02:41,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:41,367 INFO L85 PathProgramCache]: Analyzing trace with hash 69298731, now seen corresponding path program 1 times [2021-11-22 15:02:41,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:02:41,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [202679231] [2021-11-22 15:02:41,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:41,367 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:02:41,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:02:41,368 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:02:41,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-11-22 15:02:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:41,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 15:02:41,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:02:41,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:41,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:02:41,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:41,567 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:02:41,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [202679231] [2021-11-22 15:02:41,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [202679231] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:41,568 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:41,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-22 15:02:41,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407568487] [2021-11-22 15:02:41,568 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:41,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:02:41,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:02:41,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:02:41,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:02:41,569 INFO L87 Difference]: Start difference. First operand 347 states and 380 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:41,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:41,688 INFO L93 Difference]: Finished difference Result 682 states and 735 transitions. [2021-11-22 15:02:41,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:02:41,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-22 15:02:41,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:41,691 INFO L225 Difference]: With dead ends: 682 [2021-11-22 15:02:41,692 INFO L226 Difference]: Without dead ends: 682 [2021-11-22 15:02:41,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:02:41,693 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 383 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:41,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [383 Valid, 1510 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:02:41,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2021-11-22 15:02:41,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 343. [2021-11-22 15:02:41,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 225 states have (on average 1.6666666666666667) internal successors, (375), 342 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:41,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 375 transitions. [2021-11-22 15:02:41,701 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 375 transitions. Word has length 25 [2021-11-22 15:02:41,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:41,701 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 375 transitions. [2021-11-22 15:02:41,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:41,702 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 375 transitions. [2021-11-22 15:02:41,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-22 15:02:41,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:41,702 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 15:02:41,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-11-22 15:02:41,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:02:41,903 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr99ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:02:41,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:41,904 INFO L85 PathProgramCache]: Analyzing trace with hash -2146398822, now seen corresponding path program 1 times [2021-11-22 15:02:41,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:02:41,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242495307] [2021-11-22 15:02:41,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:41,905 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:02:41,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:02:41,906 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:02:41,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-11-22 15:02:41,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:41,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:02:41,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:02:42,024 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 [2021-11-22 15:02:42,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:42,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:02:42,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:42,122 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:02:42,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242495307] [2021-11-22 15:02:42,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242495307] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:42,122 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:42,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-22 15:02:42,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351020043] [2021-11-22 15:02:42,122 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:42,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:02:42,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:02:42,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:02:42,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:02:42,124 INFO L87 Difference]: Start difference. First operand 343 states and 375 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:42,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:42,838 INFO L93 Difference]: Finished difference Result 513 states and 563 transitions. [2021-11-22 15:02:42,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:02:42,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-22 15:02:42,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:42,841 INFO L225 Difference]: With dead ends: 513 [2021-11-22 15:02:42,841 INFO L226 Difference]: Without dead ends: 513 [2021-11-22 15:02:42,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:02:42,842 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 504 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:42,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [504 Valid, 553 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 15:02:42,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2021-11-22 15:02:42,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 343. [2021-11-22 15:02:42,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 225 states have (on average 1.6622222222222223) internal successors, (374), 342 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:42,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 374 transitions. [2021-11-22 15:02:42,850 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 374 transitions. Word has length 26 [2021-11-22 15:02:42,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:42,850 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 374 transitions. [2021-11-22 15:02:42,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:42,850 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 374 transitions. [2021-11-22 15:02:42,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-22 15:02:42,851 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:42,851 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 15:02:42,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-11-22 15:02:43,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:02:43,051 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr113REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:02:43,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:43,052 INFO L85 PathProgramCache]: Analyzing trace with hash 846869669, now seen corresponding path program 1 times [2021-11-22 15:02:43,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:02:43,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1554975126] [2021-11-22 15:02:43,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:43,052 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:02:43,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:02:43,053 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:02:43,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-11-22 15:02:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:43,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 15:02:43,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:02:43,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:43,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:02:43,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:43,252 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:02:43,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1554975126] [2021-11-22 15:02:43,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1554975126] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:43,253 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:43,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-22 15:02:43,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748502931] [2021-11-22 15:02:43,253 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:43,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:02:43,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:02:43,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:02:43,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:02:43,255 INFO L87 Difference]: Start difference. First operand 343 states and 374 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:43,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:43,891 INFO L93 Difference]: Finished difference Result 383 states and 415 transitions. [2021-11-22 15:02:43,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:02:43,892 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-22 15:02:43,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:43,893 INFO L225 Difference]: With dead ends: 383 [2021-11-22 15:02:43,894 INFO L226 Difference]: Without dead ends: 383 [2021-11-22 15:02:43,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:02:43,895 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 85 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:43,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 731 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 15:02:43,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-11-22 15:02:43,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 344. [2021-11-22 15:02:43,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 227 states have (on average 1.6607929515418502) internal successors, (377), 343 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:43,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 377 transitions. [2021-11-22 15:02:43,903 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 377 transitions. Word has length 26 [2021-11-22 15:02:43,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:43,903 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 377 transitions. [2021-11-22 15:02:43,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:43,904 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 377 transitions. [2021-11-22 15:02:43,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-22 15:02:43,904 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:43,905 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 15:02:43,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-11-22 15:02:44,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:02:44,105 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr114REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:02:44,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:44,106 INFO L85 PathProgramCache]: Analyzing trace with hash 846869670, now seen corresponding path program 1 times [2021-11-22 15:02:44,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:02:44,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1544584711] [2021-11-22 15:02:44,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:44,107 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:02:44,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:02:44,108 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:02:44,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-11-22 15:02:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:44,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-22 15:02:44,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:02:44,543 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-22 15:02:44,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 44 [2021-11-22 15:02:44,594 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-22 15:02:44,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 41 [2021-11-22 15:02:44,978 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 30 treesize of output 29 [2021-11-22 15:02:45,151 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 52 treesize of output 44 [2021-11-22 15:02:45,156 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 41 treesize of output 33 [2021-11-22 15:02:45,169 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 15:02:45,169 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 30 treesize of output 30 [2021-11-22 15:02:45,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:45,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:02:45,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-11-22 15:02:45,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:45,931 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:02:45,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1544584711] [2021-11-22 15:02:45,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1544584711] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:45,932 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:45,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 14 [2021-11-22 15:02:45,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502558222] [2021-11-22 15:02:45,932 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:45,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-22 15:02:45,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:02:45,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-22 15:02:45,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-22 15:02:45,933 INFO L87 Difference]: Start difference. First operand 344 states and 377 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:49,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:49,141 INFO L93 Difference]: Finished difference Result 350 states and 382 transitions. [2021-11-22 15:02:49,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 15:02:49,142 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-22 15:02:49,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:49,143 INFO L225 Difference]: With dead ends: 350 [2021-11-22 15:02:49,143 INFO L226 Difference]: Without dead ends: 350 [2021-11-22 15:02:49,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-11-22 15:02:49,144 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 35 mSDsluCounter, 1706 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2040 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:49,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 2040 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 350 Invalid, 0 Unknown, 12 Unchecked, 3.1s Time] [2021-11-22 15:02:49,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-11-22 15:02:49,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 346. [2021-11-22 15:02:49,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 229 states have (on average 1.6550218340611353) internal successors, (379), 345 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:49,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 379 transitions. [2021-11-22 15:02:49,149 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 379 transitions. Word has length 26 [2021-11-22 15:02:49,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:49,150 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 379 transitions. [2021-11-22 15:02:49,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:49,150 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 379 transitions. [2021-11-22 15:02:49,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-22 15:02:49,150 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:49,150 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 15:02:49,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-11-22 15:02:49,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:02:49,351 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:02:49,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:49,351 INFO L85 PathProgramCache]: Analyzing trace with hash 396564361, now seen corresponding path program 1 times [2021-11-22 15:02:49,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:02:49,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673591883] [2021-11-22 15:02:49,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:49,352 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:02:49,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:02:49,353 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:02:49,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-11-22 15:02:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:49,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 15:02:49,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:02:49,596 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-22 15:02:49,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 20 [2021-11-22 15:02:49,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:49,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:02:49,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:49,703 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:02:49,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673591883] [2021-11-22 15:02:49,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673591883] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:49,703 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:49,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-22 15:02:49,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986795464] [2021-11-22 15:02:49,703 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:49,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:02:49,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:02:49,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:02:49,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:02:49,704 INFO L87 Difference]: Start difference. First operand 346 states and 379 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:50,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:50,142 INFO L93 Difference]: Finished difference Result 345 states and 378 transitions. [2021-11-22 15:02:50,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:02:50,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-22 15:02:50,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:50,144 INFO L225 Difference]: With dead ends: 345 [2021-11-22 15:02:50,144 INFO L226 Difference]: Without dead ends: 345 [2021-11-22 15:02:50,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:02:50,145 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 23 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 136 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:50,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 733 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 137 Invalid, 0 Unknown, 136 Unchecked, 0.4s Time] [2021-11-22 15:02:50,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-11-22 15:02:50,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2021-11-22 15:02:50,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 229 states have (on average 1.6506550218340612) internal successors, (378), 344 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:50,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 378 transitions. [2021-11-22 15:02:50,153 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 378 transitions. Word has length 27 [2021-11-22 15:02:50,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:50,153 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 378 transitions. [2021-11-22 15:02:50,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:50,154 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 378 transitions. [2021-11-22 15:02:50,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-22 15:02:50,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:50,155 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 15:02:50,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (49)] Ended with exit code 0 [2021-11-22 15:02:50,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:02:50,369 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:02:50,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:50,370 INFO L85 PathProgramCache]: Analyzing trace with hash 396564362, now seen corresponding path program 1 times [2021-11-22 15:02:50,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:02:50,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [962346019] [2021-11-22 15:02:50,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:50,371 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:02:50,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:02:50,373 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:02:50,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-11-22 15:02:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:50,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-22 15:02:50,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:02:50,591 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 [2021-11-22 15:02:50,682 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 15:02:50,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 33 [2021-11-22 15:02:50,688 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-22 15:02:50,689 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 30 treesize of output 26 [2021-11-22 15:02:50,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:50,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:02:51,085 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-22 15:02:51,086 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 40 treesize of output 39 [2021-11-22 15:02:52,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 82 [2021-11-22 15:02:52,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:52,579 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:02:52,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [962346019] [2021-11-22 15:02:52,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [962346019] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:52,579 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:52,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 10 [2021-11-22 15:02:52,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923118448] [2021-11-22 15:02:52,580 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:52,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-22 15:02:52,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:02:52,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-22 15:02:52,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-22 15:02:52,581 INFO L87 Difference]: Start difference. First operand 345 states and 378 transitions. Second operand has 11 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:53,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:53,728 INFO L93 Difference]: Finished difference Result 351 states and 382 transitions. [2021-11-22 15:02:53,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 15:02:53,730 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-22 15:02:53,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:53,734 INFO L225 Difference]: With dead ends: 351 [2021-11-22 15:02:53,734 INFO L226 Difference]: Without dead ends: 351 [2021-11-22 15:02:53,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-11-22 15:02:53,735 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 501 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 273 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:53,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 1178 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 197 Invalid, 0 Unknown, 273 Unchecked, 1.0s Time] [2021-11-22 15:02:53,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-11-22 15:02:53,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 344. [2021-11-22 15:02:53,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 229 states have (on average 1.6462882096069869) internal successors, (377), 343 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:53,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 377 transitions. [2021-11-22 15:02:53,741 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 377 transitions. Word has length 27 [2021-11-22 15:02:53,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:53,741 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 377 transitions. [2021-11-22 15:02:53,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:53,741 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 377 transitions. [2021-11-22 15:02:53,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-22 15:02:53,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:53,741 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 15:02:53,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (50)] Ended with exit code 0 [2021-11-22 15:02:53,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:02:53,942 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr108ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:02:53,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:53,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1735977325, now seen corresponding path program 1 times [2021-11-22 15:02:53,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:02:53,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141061827] [2021-11-22 15:02:53,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:53,943 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:02:53,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:02:53,949 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:02:53,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-11-22 15:02:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:54,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-22 15:02:54,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:02:54,055 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 [2021-11-22 15:02:54,099 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-22 15:02:54,099 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 25 treesize of output 32 [2021-11-22 15:02:54,239 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-22 15:02:54,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 53 [2021-11-22 15:02:54,849 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-11-22 15:02:54,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 57 treesize of output 66 [2021-11-22 15:02:55,182 INFO L354 Elim1Store]: treesize reduction 46, result has 27.0 percent of original size [2021-11-22 15:02:55,182 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 59 treesize of output 68 [2021-11-22 15:02:55,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:55,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:03:18,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:03:18,257 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:03:18,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141061827] [2021-11-22 15:03:18,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141061827] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:03:18,258 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:03:18,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 10] imperfect sequences [] total 17 [2021-11-22 15:03:18,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843301001] [2021-11-22 15:03:18,258 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:03:18,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-22 15:03:18,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:03:18,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-22 15:03:18,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=209, Unknown=8, NotChecked=0, Total=306 [2021-11-22 15:03:18,260 INFO L87 Difference]: Start difference. First operand 344 states and 377 transitions. Second operand has 18 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 18 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:03:22,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:03:22,369 INFO L93 Difference]: Finished difference Result 347 states and 380 transitions. [2021-11-22 15:03:22,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 15:03:22,370 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 18 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-22 15:03:22,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:03:22,370 INFO L225 Difference]: With dead ends: 347 [2021-11-22 15:03:22,370 INFO L226 Difference]: Without dead ends: 347 [2021-11-22 15:03:22,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 27.0s TimeCoverageRelationStatistics Valid=112, Invalid=258, Unknown=10, NotChecked=0, Total=380 [2021-11-22 15:03:22,371 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 41 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1502 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 888 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:03:22,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 1502 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 888 Unchecked, 0.0s Time] [2021-11-22 15:03:22,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-11-22 15:03:22,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2021-11-22 15:03:22,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 232 states have (on average 1.6379310344827587) internal successors, (380), 346 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:03:22,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 380 transitions. [2021-11-22 15:03:22,377 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 380 transitions. Word has length 27 [2021-11-22 15:03:22,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:03:22,377 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 380 transitions. [2021-11-22 15:03:22,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 18 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:03:22,378 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 380 transitions. [2021-11-22 15:03:22,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-22 15:03:22,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:03:22,378 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 15:03:22,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-11-22 15:03:22,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:03:22,582 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr101ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:03:22,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:03:22,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1104950436, now seen corresponding path program 1 times [2021-11-22 15:03:22,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:03:22,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1059949057] [2021-11-22 15:03:22,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:03:22,583 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:03:22,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:03:22,584 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:03:22,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-11-22 15:03:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:03:22,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 15:03:22,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:03:23,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:03:23,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:03:23,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:03:23,224 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:03:23,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1059949057] [2021-11-22 15:03:23,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1059949057] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:03:23,225 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:03:23,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 7 [2021-11-22 15:03:23,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673598727] [2021-11-22 15:03:23,225 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:03:23,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 15:03:23,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:03:23,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 15:03:23,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:03:23,226 INFO L87 Difference]: Start difference. First operand 347 states and 380 transitions. Second operand has 8 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:03:23,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:03:23,379 INFO L93 Difference]: Finished difference Result 545 states and 600 transitions. [2021-11-22 15:03:23,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:03:23,380 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-22 15:03:23,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:03:23,381 INFO L225 Difference]: With dead ends: 545 [2021-11-22 15:03:23,381 INFO L226 Difference]: Without dead ends: 545 [2021-11-22 15:03:23,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:03:23,382 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 333 mSDsluCounter, 1340 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:03:23,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 1665 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 59 Invalid, 0 Unknown, 82 Unchecked, 0.1s Time] [2021-11-22 15:03:23,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-11-22 15:03:23,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 347. [2021-11-22 15:03:23,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 232 states have (on average 1.6336206896551724) internal successors, (379), 346 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:03:23,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 379 transitions. [2021-11-22 15:03:23,390 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 379 transitions. Word has length 28 [2021-11-22 15:03:23,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:03:23,390 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 379 transitions. [2021-11-22 15:03:23,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:03:23,390 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 379 transitions. [2021-11-22 15:03:23,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-22 15:03:23,391 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:03:23,391 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 15:03:23,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-11-22 15:03:23,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:03:23,591 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr131ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:03:23,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:03:23,592 INFO L85 PathProgramCache]: Analyzing trace with hash 2092935800, now seen corresponding path program 1 times [2021-11-22 15:03:23,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:03:23,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [366748942] [2021-11-22 15:03:23,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:03:23,593 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:03:23,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:03:23,595 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:03:23,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-11-22 15:03:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:03:23,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-22 15:03:23,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:03:26,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:03:26,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:03:33,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:03:33,350 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:03:33,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [366748942] [2021-11-22 15:03:33,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [366748942] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:03:33,351 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:03:33,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-11-22 15:03:33,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632836767] [2021-11-22 15:03:33,351 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:03:33,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-22 15:03:33,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:03:33,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-22 15:03:33,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=167, Unknown=4, NotChecked=0, Total=210 [2021-11-22 15:03:33,352 INFO L87 Difference]: Start difference. First operand 347 states and 379 transitions. Second operand has 15 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:03:37,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:03:37,260 INFO L93 Difference]: Finished difference Result 350 states and 381 transitions. [2021-11-22 15:03:37,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 15:03:37,261 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-22 15:03:37,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:03:37,262 INFO L225 Difference]: With dead ends: 350 [2021-11-22 15:03:37,262 INFO L226 Difference]: Without dead ends: 333 [2021-11-22 15:03:37,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=65, Invalid=272, Unknown=5, NotChecked=0, Total=342 [2021-11-22 15:03:37,263 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 13 mSDsluCounter, 1784 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2114 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 425 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-22 15:03:37,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 2114 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 839 Invalid, 0 Unknown, 425 Unchecked, 1.6s Time] [2021-11-22 15:03:37,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-11-22 15:03:37,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2021-11-22 15:03:37,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 218 states have (on average 1.6697247706422018) internal successors, (364), 332 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:03:37,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 364 transitions. [2021-11-22 15:03:37,267 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 364 transitions. Word has length 28 [2021-11-22 15:03:37,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:03:37,267 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 364 transitions. [2021-11-22 15:03:37,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:03:37,267 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 364 transitions. [2021-11-22 15:03:37,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-22 15:03:37,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:03:37,268 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 15:03:37,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-11-22 15:03:37,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:03:37,477 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:03:37,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:03:37,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1153736662, now seen corresponding path program 1 times [2021-11-22 15:03:37,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:03:37,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [60242161] [2021-11-22 15:03:37,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:03:37,478 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:03:37,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:03:37,479 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:03:37,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-11-22 15:03:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:03:37,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-22 15:03:37,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:03:37,656 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-22 15:03:37,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 22 [2021-11-22 15:03:37,807 INFO L354 Elim1Store]: treesize reduction 9, result has 64.0 percent of original size [2021-11-22 15:03:37,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 46 [2021-11-22 15:03:38,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-22 15:03:38,150 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-22 15:03:38,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 30 [2021-11-22 15:03:38,256 INFO L354 Elim1Store]: treesize reduction 27, result has 43.8 percent of original size [2021-11-22 15:03:38,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 35 [2021-11-22 15:03:38,482 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-22 15:03:38,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 53 [2021-11-22 15:03:38,747 INFO L354 Elim1Store]: treesize reduction 89, result has 39.0 percent of original size [2021-11-22 15:03:38,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 62 treesize of output 99 [2021-11-22 15:03:39,411 INFO L354 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2021-11-22 15:03:39,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 87 [2021-11-22 15:03:39,802 INFO L354 Elim1Store]: treesize reduction 116, result has 18.3 percent of original size [2021-11-22 15:03:39,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 160 treesize of output 114 [2021-11-22 15:03:40,300 INFO L354 Elim1Store]: treesize reduction 106, result has 31.6 percent of original size [2021-11-22 15:03:40,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 96 treesize of output 119 [2021-11-22 15:03:40,704 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-11-22 15:03:40,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 193 treesize of output 124 [2021-11-22 15:03:41,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:03:41,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:04:02,984 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_13| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_13| (_ bv1 1)) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)) |c_ULTIMATE.start_entry_point_~adapter~0#1.base|)))) (store .cse0 |c_ULTIMATE.start_entry_point_~adapter~0#1.base| (store (select .cse0 |c_ULTIMATE.start_entry_point_~adapter~0#1.base|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.base|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|))))) (_ bv1 1)))) is different from false [2021-11-22 15:04:05,008 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_13| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_13| (_ bv1 1)) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)) |c_ULTIMATE.start_ldv_malloc_#res#1.base|)))) (store .cse0 |c_ULTIMATE.start_ldv_malloc_#res#1.base| (store (select .cse0 |c_ULTIMATE.start_ldv_malloc_#res#1.base|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.base|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|))))) (_ bv1 1)))) is different from false [2021-11-22 15:04:07,049 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_13| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select (store (store |c_#valid| |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (_ bv1 1)) |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_13| (_ bv1 1)) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)) |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|)))) (store .cse0 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (store (select .cse0 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.base|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|)))))) (_ bv1 1))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|)))))) is different from false [2021-11-22 15:04:13,535 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_13| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_225| (_ BitVec 32))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_ldv_malloc_#res#1.base_225| (_ bv1 1)))) (or (not (= (_ bv0 1) (bvneg (bvneg (select .cse0 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_ldv_malloc_#res#1.base_225|))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store (store .cse0 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (_ bv1 1)) |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_13| (_ bv1 1)) (select (select (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd (_ bv16 32) |c_ULTIMATE.start_entry_point_~client~0#1.offset|) |v_ULTIMATE.start_ldv_malloc_#res#1.base_225|) (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)) |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|)))) (store .cse1 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (store (select .cse1 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.base|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|)))))))) (_ bv1 1))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (select .cse0 |c_ULTIMATE.start_entry_point_~client~0#1.base|))) (_ bv1 1))))))) is different from false [2021-11-22 15:04:14,006 INFO L354 Elim1Store]: treesize reduction 202, result has 46.4 percent of original size [2021-11-22 15:04:14,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 605 treesize of output 695 [2021-11-22 15:04:18,956 WARN L838 $PredicateComparison]: unable to prove that (and (or (forall ((|ULTIMATE.start_entry_point_~cfg~2#1.offset| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~fe~2#1.base| (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) |ULTIMATE.start_entry_point_~cfg~2#1.offset| |ULTIMATE.start_entry_point_~fe~2#1.base|)))) (store .cse2 |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (store (select .cse2 |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd (_ bv16 32) |c_ULTIMATE.start_entry_point_~client~0#1.offset|) |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)) |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|))))) (store .cse1 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (store (select .cse1 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.base|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|))) (or (= |c_ULTIMATE.start_entry_point_~client~0#1.base| .cse0) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| .cse0) (= .cse0 |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| |c_ULTIMATE.start_entry_point_~client~0#1.base|)))) (= |c_ULTIMATE.start_entry_point_~client~0#1.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|)) (forall ((|ULTIMATE.start_entry_point_~cfg~2#1.offset| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~fe~2#1.base| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_225| (_ BitVec 32))) (let ((.cse3 (select (select (let ((.cse4 (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) |ULTIMATE.start_entry_point_~cfg~2#1.offset| |ULTIMATE.start_entry_point_~fe~2#1.base|)))) (store .cse5 |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (store (select .cse5 |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd (_ bv16 32) |c_ULTIMATE.start_entry_point_~client~0#1.offset|) |v_ULTIMATE.start_ldv_malloc_#res#1.base_225|) (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)) |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|))))) (store .cse4 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (store (select .cse4 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.base|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|))) (or (= |c_ULTIMATE.start_entry_point_~client~0#1.base| .cse3) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_225| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_225| |c_ULTIMATE.start_entry_point_~client~0#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_225| .cse3) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| |c_ULTIMATE.start_entry_point_~client~0#1.base|) (= .cse3 |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| |v_ULTIMATE.start_ldv_malloc_#res#1.base_225|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| .cse3))))) is different from false [2021-11-22 15:04:21,760 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:04:38,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:38,586 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:04:38,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [60242161] [2021-11-22 15:04:38,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [60242161] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:04:38,586 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:04:38,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17, 17] imperfect sequences [] total 32 [2021-11-22 15:04:38,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300484134] [2021-11-22 15:04:38,586 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:04:38,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-22 15:04:38,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:04:38,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-22 15:04:38,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=639, Unknown=16, NotChecked=280, Total=1056 [2021-11-22 15:04:38,587 INFO L87 Difference]: Start difference. First operand 333 states and 364 transitions. Second operand has 33 states, 32 states have (on average 1.75) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:40,918 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (= |c_ULTIMATE.start_entry_point_~client~0#1.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|))) (and (= |c_ULTIMATE.start_entry_point_~cfg~2#1.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|)) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |c_#valid| |c_ULTIMATE.start_ldv_malloc_#res#1.base|)))) (_ bv1 1))) (exists ((v_arrayElimCell_106 (_ BitVec 1))) (let ((.cse0 (bvneg v_arrayElimCell_106))) (and (or (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| (_ bv0 32))) (bvneg .cse0))) (= |c_ULTIMATE.start_ldv_malloc_#res#1.base| (_ bv0 32))) (= (_ bv0 1) .cse0)))) (or (forall ((|ULTIMATE.start_entry_point_~cfg~2#1.offset| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~fe~2#1.base| (_ BitVec 32))) (let ((.cse1 (select (select (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) |ULTIMATE.start_entry_point_~cfg~2#1.offset| |ULTIMATE.start_entry_point_~fe~2#1.base|)))) (store .cse3 |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (store (select .cse3 |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd (_ bv16 32) |c_ULTIMATE.start_entry_point_~client~0#1.offset|) |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)) |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|))))) (store .cse2 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (store (select .cse2 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.base|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|))) (or (= |c_ULTIMATE.start_entry_point_~client~0#1.base| .cse1) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| .cse1) (= .cse1 |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| |c_ULTIMATE.start_entry_point_~client~0#1.base|)))) .cse4) (forall ((|ULTIMATE.start_entry_point_~cfg~2#1.offset| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~fe~2#1.base| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_225| (_ BitVec 32))) (let ((.cse5 (select (select (let ((.cse6 (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) |ULTIMATE.start_entry_point_~cfg~2#1.offset| |ULTIMATE.start_entry_point_~fe~2#1.base|)))) (store .cse7 |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (store (select .cse7 |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd (_ bv16 32) |c_ULTIMATE.start_entry_point_~client~0#1.offset|) |v_ULTIMATE.start_ldv_malloc_#res#1.base_225|) (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)) |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|))))) (store .cse6 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (store (select .cse6 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.base|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|))) (or (= |c_ULTIMATE.start_entry_point_~client~0#1.base| .cse5) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_225| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_225| |c_ULTIMATE.start_entry_point_~client~0#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_225| .cse5) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| |c_ULTIMATE.start_entry_point_~client~0#1.base|) (= .cse5 |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| |v_ULTIMATE.start_ldv_malloc_#res#1.base_225|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| .cse5)))) (not .cse4) (= (_ bv0 1) (select |c_#valid| (_ bv0 32))) (not (= |c_ULTIMATE.start_entry_point_~client~0#1.base| |c_ULTIMATE.start_ldv_malloc_#res#1.base|)))) is different from false [2021-11-22 15:04:42,967 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (= |c_ULTIMATE.start_entry_point_~client~0#1.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|))) (and (= |c_ULTIMATE.start_entry_point_~cfg~2#1.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|)) (or (forall ((|ULTIMATE.start_entry_point_~cfg~2#1.offset| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~fe~2#1.base| (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) |ULTIMATE.start_entry_point_~cfg~2#1.offset| |ULTIMATE.start_entry_point_~fe~2#1.base|)))) (store .cse2 |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (store (select .cse2 |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd (_ bv16 32) |c_ULTIMATE.start_entry_point_~client~0#1.offset|) |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)) |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|))))) (store .cse1 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (store (select .cse1 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.base|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|))) (or (= |c_ULTIMATE.start_entry_point_~client~0#1.base| .cse0) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| .cse0) (= .cse0 |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| |c_ULTIMATE.start_entry_point_~client~0#1.base|)))) .cse3) (forall ((|ULTIMATE.start_entry_point_~cfg~2#1.offset| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~fe~2#1.base| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_225| (_ BitVec 32))) (let ((.cse4 (select (select (let ((.cse5 (let ((.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) |ULTIMATE.start_entry_point_~cfg~2#1.offset| |ULTIMATE.start_entry_point_~fe~2#1.base|)))) (store .cse6 |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (store (select .cse6 |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd (_ bv16 32) |c_ULTIMATE.start_entry_point_~client~0#1.offset|) |v_ULTIMATE.start_ldv_malloc_#res#1.base_225|) (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)) |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|))))) (store .cse5 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| (store (select .cse5 |v_ULTIMATE.start_ldv_malloc_#res#1.base_223|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.base|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|))) (or (= |c_ULTIMATE.start_entry_point_~client~0#1.base| .cse4) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_225| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_225| |c_ULTIMATE.start_entry_point_~client~0#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_225| .cse4) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| |c_ULTIMATE.start_entry_point_~client~0#1.base|) (= .cse4 |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| |v_ULTIMATE.start_ldv_malloc_#res#1.base_225|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_223| .cse4)))) (not .cse3))) is different from false [2021-11-22 15:05:03,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:05:03,395 INFO L93 Difference]: Finished difference Result 478 states and 525 transitions. [2021-11-22 15:05:03,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-22 15:05:03,395 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.75) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-22 15:05:03,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:05:03,396 INFO L225 Difference]: With dead ends: 478 [2021-11-22 15:05:03,396 INFO L226 Difference]: Without dead ends: 478 [2021-11-22 15:05:03,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 7 IntricatePredicates, 2 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 58.9s TimeCoverageRelationStatistics Valid=186, Invalid=1013, Unknown=19, NotChecked=504, Total=1722 [2021-11-22 15:05:03,397 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 179 mSDsluCounter, 4151 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 4396 SdHoareTripleChecker+Invalid, 3386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2510 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:05:03,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 4396 Invalid, 3386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 866 Invalid, 0 Unknown, 2510 Unchecked, 3.4s Time] [2021-11-22 15:05:03,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2021-11-22 15:05:03,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 332. [2021-11-22 15:05:03,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 218 states have (on average 1.665137614678899) internal successors, (363), 331 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:05:03,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 363 transitions. [2021-11-22 15:05:03,403 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 363 transitions. Word has length 29 [2021-11-22 15:05:03,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:05:03,403 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 363 transitions. [2021-11-22 15:05:03,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.75) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:05:03,403 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 363 transitions. [2021-11-22 15:05:03,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-22 15:05:03,404 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:05:03,404 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 15:05:03,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-11-22 15:05:03,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:05:03,604 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 128 more)] === [2021-11-22 15:05:03,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:05:03,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1153736661, now seen corresponding path program 1 times [2021-11-22 15:05:03,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:05:03,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973049784] [2021-11-22 15:05:03,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:05:03,606 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:05:03,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:05:03,606 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:05:03,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-11-22 15:05:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:05:03,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-22 15:05:03,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:05:03,799 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 [2021-11-22 15:05:03,885 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-22 15:05:03,886 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 23 treesize of output 30 [2021-11-22 15:05:03,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 15:05:04,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-22 15:05:04,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-22 15:05:04,309 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-22 15:05:04,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 31 [2021-11-22 15:05:04,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-22 15:05:04,689 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-22 15:05:04,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 65 [2021-11-22 15:05:04,738 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-22 15:05:04,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 87 [2021-11-22 15:05:05,003 INFO L354 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-11-22 15:05:05,004 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 1 case distinctions, treesize of input 16 treesize of output 26 [2021-11-22 15:05:05,071 INFO L354 Elim1Store]: treesize reduction 27, result has 43.8 percent of original size [2021-11-22 15:05:05,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 36 [2021-11-22 15:05:05,701 INFO L354 Elim1Store]: treesize reduction 60, result has 20.0 percent of original size [2021-11-22 15:05:05,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 82 [2021-11-22 15:05:05,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:05:05,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-22 15:05:06,247 INFO L354 Elim1Store]: treesize reduction 26, result has 46.9 percent of original size [2021-11-22 15:05:06,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 62 treesize of output 66 [2021-11-22 15:05:06,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-22 15:05:07,020 INFO L354 Elim1Store]: treesize reduction 110, result has 17.9 percent of original size [2021-11-22 15:05:07,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 98 treesize of output 68 [2021-11-22 15:05:07,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:05:07,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-22 15:05:07,716 INFO L354 Elim1Store]: treesize reduction 228, result has 12.6 percent of original size [2021-11-22 15:05:07,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 172 treesize of output 112 [2021-11-22 15:05:07,778 INFO L354 Elim1Store]: treesize reduction 88, result has 16.2 percent of original size [2021-11-22 15:05:07,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 162 treesize of output 155 [2021-11-22 15:05:08,315 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-22 15:05:08,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2021-11-22 15:05:08,894 INFO L354 Elim1Store]: treesize reduction 148, result has 0.7 percent of original size [2021-11-22 15:05:08,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 174 treesize of output 84 [2021-11-22 15:05:08,909 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-22 15:05:08,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 41 [2021-11-22 15:05:09,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:05:09,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:05:25,307 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_14| (_ BitVec 32))) (or (and (forall ((|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)) |ULTIMATE.start_entry_point_~adapter~0#1.offset|)))) (store .cse1 |c_ULTIMATE.start_ldv_malloc_#res#1.base| (store (select .cse1 |c_ULTIMATE.start_ldv_malloc_#res#1.base|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.offset|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32))) (let ((.cse3 (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)))) (bvule (bvadd (_ bv4 32) (select (select (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~client~0#1.base|) .cse3 |ULTIMATE.start_entry_point_~adapter~0#1.offset|)))) (store .cse2 |c_ULTIMATE.start_ldv_malloc_#res#1.base| (store (select .cse2 |c_ULTIMATE.start_ldv_malloc_#res#1.base|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.offset|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|)) (select (store |c_#length| |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_14| (_ bv1 32)) (select (select (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~client~0#1.base|) .cse3 |c_ULTIMATE.start_ldv_malloc_#res#1.base|)))) (store .cse4 |c_ULTIMATE.start_ldv_malloc_#res#1.base| (store (select .cse4 |c_ULTIMATE.start_ldv_malloc_#res#1.base|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.base|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|)))))) (not (bvult |c_#StackHeapBarrier| |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_14|)))) is different from false [2021-11-22 15:06:21,844 INFO L354 Elim1Store]: treesize reduction 28, result has 42.9 percent of original size [2021-11-22 15:06:21,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 372 treesize of output 384 [2021-11-22 15:06:27,879 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_14| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_232| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_234| (_ BitVec 32))) (or (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| |c_ULTIMATE.start_entry_point_~client~0#1.base|) (not (bvult |c_#StackHeapBarrier| |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_14|)) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| |v_ULTIMATE.start_ldv_malloc_#res#1.base_234|) (and (forall ((v_prenex_2 (_ BitVec 32)) (|ULTIMATE.start_entry_point_~fe~2#1.offset| (_ BitVec 32)) (v_prenex_1 (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~2#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) |c_ULTIMATE.start_entry_point_~cfg~2#1.offset| |ULTIMATE.start_entry_point_~fe~2#1.offset|)))) (store .cse2 |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (store (select .cse2 |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd (_ bv16 32) |c_ULTIMATE.start_entry_point_~client~0#1.offset|) v_prenex_2) (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)) v_prenex_1))))) (store .cse1 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| (store (select .cse1 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232|) v_prenex_1 |#funAddr~master_xfer.offset|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_subst_5 (_ BitVec 32)) (|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_ldv_malloc_~size#1| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~addr~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~fe~2#1.offset| (_ BitVec 32))) (let ((.cse5 (bvadd (_ bv16 32) |c_ULTIMATE.start_entry_point_~client~0#1.offset|)) (.cse6 (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)))) (bvule (bvadd (_ bv4 32) (select (select (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~2#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) |c_ULTIMATE.start_entry_point_~cfg~2#1.offset| |ULTIMATE.start_entry_point_~fe~2#1.offset|)))) (store .cse4 |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (store (select .cse4 |c_ULTIMATE.start_entry_point_~client~0#1.base|) .cse5 |ULTIMATE.start_entry_point_~addr~0#1.offset|) .cse6 |ULTIMATE.start_entry_point_~adapter~0#1.offset|))))) (store .cse3 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| (store (select .cse3 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.offset|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|)) (select (store (store (store |c_#length| |v_ULTIMATE.start_ldv_malloc_#res#1.base_234| |ULTIMATE.start_ldv_malloc_~size#1|) |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| v_subst_5) |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_14| (_ bv1 32)) (select (select (let ((.cse7 (let ((.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) |c_ULTIMATE.start_entry_point_~cfg~2#1.offset| |c_ULTIMATE.start_entry_point_~fe~2#1.base|)))) (store .cse8 |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (store (select .cse8 |c_ULTIMATE.start_entry_point_~client~0#1.base|) .cse5 |v_ULTIMATE.start_ldv_malloc_#res#1.base_234|) .cse6 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232|))))) (store .cse7 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| (store (select .cse7 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.base|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|)))))) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_234| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|))) is different from false [2021-11-22 15:06:35,218 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_14| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_232| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_234| (_ BitVec 32))) (or (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| |c_ULTIMATE.start_entry_point_~client~0#1.base|) (and (forall ((v_prenex_2 (_ BitVec 32)) (|ULTIMATE.start_entry_point_~fe~2#1.offset| (_ BitVec 32)) (v_prenex_1 (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~2#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) |c_ULTIMATE.start_entry_point_~cfg~2#1.offset| |ULTIMATE.start_entry_point_~fe~2#1.offset|)))) (store .cse2 |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (store (select .cse2 |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd (_ bv16 32) |c_ULTIMATE.start_entry_point_~client~0#1.offset|) v_prenex_2) (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)) v_prenex_1))))) (store .cse1 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| (store (select .cse1 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232|) v_prenex_1 |#funAddr~master_xfer.offset|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_subst_5 (_ BitVec 32)) (|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_ldv_malloc_~size#1| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~addr~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~fe~2#1.offset| (_ BitVec 32))) (let ((.cse5 (bvadd (_ bv16 32) |c_ULTIMATE.start_entry_point_~client~0#1.offset|)) (.cse6 (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)))) (bvule (bvadd (_ bv4 32) (select (select (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~2#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) |c_ULTIMATE.start_entry_point_~cfg~2#1.offset| |ULTIMATE.start_entry_point_~fe~2#1.offset|)))) (store .cse4 |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (store (select .cse4 |c_ULTIMATE.start_entry_point_~client~0#1.base|) .cse5 |ULTIMATE.start_entry_point_~addr~0#1.offset|) .cse6 |ULTIMATE.start_entry_point_~adapter~0#1.offset|))))) (store .cse3 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| (store (select .cse3 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.offset|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|)) (select (store (store (store |c_#length| |v_ULTIMATE.start_ldv_malloc_#res#1.base_234| |ULTIMATE.start_ldv_malloc_~size#1|) |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| v_subst_5) |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_14| (_ bv1 32)) (select (select (let ((.cse7 (let ((.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) |c_ULTIMATE.start_entry_point_~cfg~2#1.offset| |c_ULTIMATE.start_ldv_malloc_#res#1.base|)))) (store .cse8 |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (store (select .cse8 |c_ULTIMATE.start_entry_point_~client~0#1.base|) .cse5 |v_ULTIMATE.start_ldv_malloc_#res#1.base_234|) .cse6 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232|))))) (store .cse7 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| (store (select .cse7 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.base|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|)))))) (not (bvult |c_#StackHeapBarrier| |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_14|)) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| |v_ULTIMATE.start_ldv_malloc_#res#1.base_234|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_234| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|))) is different from false [2021-11-22 15:06:42,307 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_14| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_232| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_234| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_236| (_ BitVec 32))) (or (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| |c_ULTIMATE.start_entry_point_~client~0#1.base|) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_ldv_malloc_#res#1.base_236|)))) (and (forall ((v_subst_6 (_ BitVec 32)) (v_subst_5 (_ BitVec 32)) (|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_ldv_malloc_~size#1| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~addr~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~fe~2#1.offset| (_ BitVec 32))) (let ((.cse2 (bvadd (_ bv16 32) |c_ULTIMATE.start_entry_point_~client~0#1.offset|)) (.cse3 (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)))) (bvule (bvadd (_ bv4 32) (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~2#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) |c_ULTIMATE.start_entry_point_~cfg~2#1.offset| |ULTIMATE.start_entry_point_~fe~2#1.offset|)))) (store .cse1 |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (store (select .cse1 |c_ULTIMATE.start_entry_point_~client~0#1.base|) .cse2 |ULTIMATE.start_entry_point_~addr~0#1.offset|) .cse3 |ULTIMATE.start_entry_point_~adapter~0#1.offset|))))) (store .cse0 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| (store (select .cse0 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.offset|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|)) (select (store (store (store (store |c_#length| |v_ULTIMATE.start_ldv_malloc_#res#1.base_236| |ULTIMATE.start_ldv_malloc_~size#1|) |v_ULTIMATE.start_ldv_malloc_#res#1.base_234| v_subst_6) |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| v_subst_5) |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_14| (_ bv1 32)) (select (select (let ((.cse4 (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) |c_ULTIMATE.start_entry_point_~cfg~2#1.offset| |v_ULTIMATE.start_ldv_malloc_#res#1.base_236|)))) (store .cse5 |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (store (select .cse5 |c_ULTIMATE.start_entry_point_~client~0#1.base|) .cse2 |v_ULTIMATE.start_ldv_malloc_#res#1.base_234|) .cse3 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232|))))) (store .cse4 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| (store (select .cse4 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.base|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|))))) (forall ((v_prenex_2 (_ BitVec 32)) (|ULTIMATE.start_entry_point_~fe~2#1.offset| (_ BitVec 32)) (v_prenex_1 (_ BitVec 32))) (let ((.cse6 (select (select (let ((.cse7 (let ((.cse8 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~2#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) |c_ULTIMATE.start_entry_point_~cfg~2#1.offset| |ULTIMATE.start_entry_point_~fe~2#1.offset|)))) (store .cse8 |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (store (select .cse8 |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd (_ bv16 32) |c_ULTIMATE.start_entry_point_~client~0#1.offset|) v_prenex_2) (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)) v_prenex_1))))) (store .cse7 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| (store (select .cse7 |v_ULTIMATE.start_ldv_malloc_#res#1.base_232|) v_prenex_1 |#funAddr~master_xfer.offset|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|))) (bvule .cse6 (bvadd (_ bv4 32) .cse6))))) (not (bvult |c_#StackHeapBarrier| |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_14|)) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| |v_ULTIMATE.start_ldv_malloc_#res#1.base_234|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_234| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|) (= |v_ULTIMATE.start_ldv_malloc_#res#1.base_232| |c_ULTIMATE.start_entry_point_~cfg~2#1.base|))) is different from false [2021-11-22 15:06:46,286 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:06:46,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1973049784] [2021-11-22 15:06:46,287 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-22 15:06:46,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2147479709] [2021-11-22 15:06:46,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:06:46,287 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-22 15:06:46,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/cvc4 [2021-11-22 15:06:46,288 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-22 15:06:46,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/cvc4 --incremental --print-success --lang smt (56)] Waiting until timeout for monitored process [2021-11-22 15:06:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:06:46,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-22 15:06:46,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:06:46,567 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 [2021-11-22 15:06:47,160 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-22 15:06:47,160 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 23 treesize of output 30 [2021-11-22 15:06:47,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 15:06:47,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-22 15:06:47,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-22 15:06:48,126 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 15:06:48,127 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 1 case distinctions, treesize of input 45 treesize of output 47 [2021-11-22 15:06:48,198 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-22 15:06:48,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 56 [2021-11-22 15:06:49,465 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-22 15:06:49,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 92 [2021-11-22 15:06:49,495 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-22 15:06:49,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 98 [2021-11-22 15:06:50,097 INFO L354 Elim1Store]: treesize reduction 77, result has 36.9 percent of original size [2021-11-22 15:06:50,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 78 treesize of output 109 [2021-11-22 15:06:50,127 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-22 15:06:50,127 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 1 case distinctions, treesize of input 101 treesize of output 103 [2021-11-22 15:06:51,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:06:51,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-22 15:06:51,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:06:51,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 98 [2021-11-22 15:06:52,905 INFO L354 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-11-22 15:06:52,905 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 1 case distinctions, treesize of input 16 treesize of output 26 [2021-11-22 15:06:53,085 INFO L354 Elim1Store]: treesize reduction 120, result has 32.2 percent of original size [2021-11-22 15:06:53,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 116 treesize of output 157 [2021-11-22 15:06:55,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:06:55,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-22 15:06:55,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:06:55,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 141 [2021-11-22 15:06:56,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:06:56,732 INFO L354 Elim1Store]: treesize reduction 78, result has 17.9 percent of original size [2021-11-22 15:06:56,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 269 treesize of output 200 [2021-11-22 15:06:56,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:06:56,794 INFO L354 Elim1Store]: treesize reduction 78, result has 17.9 percent of original size [2021-11-22 15:06:56,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 259 treesize of output 252 [2021-11-22 15:06:58,109 INFO L354 Elim1Store]: treesize reduction 100, result has 17.4 percent of original size [2021-11-22 15:06:58,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 206 treesize of output 206 [2021-11-22 15:06:58,166 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-22 15:06:58,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2021-11-22 15:06:58,845 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-22 15:06:58,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 108 treesize of output 87 [2021-11-22 15:06:58,864 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-22 15:06:58,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 78 treesize of output 45 [2021-11-22 15:06:59,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:06:59,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:08:15,841 WARN L838 $PredicateComparison]: unable to prove that (forall ((|#StackHeapBarrier| (_ BitVec 32)) (|v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_15| (_ BitVec 32)) (|v_ULTIMATE.start_ldv_malloc_#res#1.base_240| (_ BitVec 32))) (or (and (forall ((|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)) |ULTIMATE.start_entry_point_~adapter~0#1.offset|)))) (store .cse1 |v_ULTIMATE.start_ldv_malloc_#res#1.base_240| (store (select .cse1 |v_ULTIMATE.start_ldv_malloc_#res#1.base_240|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.offset|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_ldv_malloc_~size#1| (_ BitVec 32))) (let ((.cse3 (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)))) (bvule (bvadd (_ bv4 32) (select (select (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~client~0#1.base|) .cse3 |ULTIMATE.start_entry_point_~adapter~0#1.offset|)))) (store .cse2 |v_ULTIMATE.start_ldv_malloc_#res#1.base_240| (store (select .cse2 |v_ULTIMATE.start_ldv_malloc_#res#1.base_240|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.offset|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|)) (select (store (store |c_#length| |v_ULTIMATE.start_ldv_malloc_#res#1.base_240| |ULTIMATE.start_ldv_malloc_~size#1|) |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_15| (_ bv1 32)) (select (select (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~client~0#1.base|) .cse3 |v_ULTIMATE.start_ldv_malloc_#res#1.base_240|)))) (store .cse4 |v_ULTIMATE.start_ldv_malloc_#res#1.base_240| (store (select .cse4 |v_ULTIMATE.start_ldv_malloc_#res#1.base_240|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.base|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|)))))) (not (bvult |v_ULTIMATE.start_ldv_malloc_#res#1.base_240| |#StackHeapBarrier|)) (not (= (_ bv0 1) (bvneg (select (store |c_#valid| |v_ULTIMATE.start_ldv_malloc_#res#1.base_240| (_ bv1 1)) |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_15|)))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_ldv_malloc_#res#1.base_240|))))) (not (bvult |#StackHeapBarrier| |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_15|)))) is different from false [2021-11-22 15:10:43,810 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-22 15:10:43,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970484803] [2021-11-22 15:10:43,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:10:43,811 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:10:43,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:10:43,825 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:10:43,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fc7e42c-6d87-4455-9211-ef8adbe5273f/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-11-22 15:10:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:10:43,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-22 15:10:43,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:10:43,933 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 [2021-11-22 15:10:43,960 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 15:10:43,960 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 17 treesize of output 17 [2021-11-22 15:10:44,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-22 15:10:44,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-22 15:10:45,421 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-22 15:10:45,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 68 [2021-11-22 15:10:45,443 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-22 15:10:45,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 57 [2021-11-22 15:10:46,310 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-22 15:10:46,310 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 1 case distinctions, treesize of input 46 treesize of output 48 [2021-11-22 15:10:46,353 INFO L354 Elim1Store]: treesize reduction 27, result has 43.8 percent of original size [2021-11-22 15:10:46,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 51 [2021-11-22 15:10:49,835 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-22 15:10:49,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 87 [2021-11-22 15:10:49,862 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-22 15:10:49,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 82 [2021-11-22 15:10:50,997 INFO L354 Elim1Store]: treesize reduction 42, result has 44.0 percent of original size [2021-11-22 15:10:50,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 46 treesize of output 67 [2021-11-22 15:10:51,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-22 15:10:53,542 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-22 15:10:53,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-22 15:10:53,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:10:53,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 65 [2021-11-22 15:10:55,161 INFO L354 Elim1Store]: treesize reduction 88, result has 16.2 percent of original size [2021-11-22 15:10:55,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 162 treesize of output 119 [2021-11-22 15:10:55,214 INFO L354 Elim1Store]: treesize reduction 88, result has 16.2 percent of original size [2021-11-22 15:10:55,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 152 treesize of output 145 [2021-11-22 15:10:56,569 INFO L354 Elim1Store]: treesize reduction 12, result has 65.7 percent of original size [2021-11-22 15:10:56,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 92 treesize of output 96 [2021-11-22 15:10:56,605 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-22 15:10:56,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2021-11-22 15:10:57,615 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-11-22 15:10:57,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 120 treesize of output 67 [2021-11-22 15:10:57,628 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-22 15:10:57,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 43 [2021-11-22 15:10:58,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:10:58,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:12:06,822 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_16| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_16|))) (and (forall ((|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32))) (let ((.cse1 (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)))) (bvule (bvadd (_ bv4 32) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~client~0#1.base|) .cse1 |ULTIMATE.start_entry_point_~adapter~0#1.offset|)))) (store .cse0 |c_ULTIMATE.start_ldv_malloc_#res#1.base| (store (select .cse0 |c_ULTIMATE.start_ldv_malloc_#res#1.base|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.offset|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|)) (select (store |c_#length| |v_ULTIMATE.start_alloc_12_~#chip_id~0#1.base_16| (_ bv1 32)) (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~client~0#1.base|) .cse1 |c_ULTIMATE.start_ldv_malloc_#res#1.base|)))) (store .cse2 |c_ULTIMATE.start_ldv_malloc_#res#1.base| (store (select .cse2 |c_ULTIMATE.start_ldv_malloc_#res#1.base|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.base|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|))))) (forall ((|ULTIMATE.start_entry_point_~adapter~0#1.offset| (_ BitVec 32))) (let ((.cse3 (select (select (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~client~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~client~0#1.base|) (bvadd |c_ULTIMATE.start_entry_point_~client~0#1.offset| (_ bv12 32)) |ULTIMATE.start_entry_point_~adapter~0#1.offset|)))) (store .cse4 |c_ULTIMATE.start_ldv_malloc_#res#1.base| (store (select .cse4 |c_ULTIMATE.start_ldv_malloc_#res#1.base|) |ULTIMATE.start_entry_point_~adapter~0#1.offset| |#funAddr~master_xfer.offset|))) |c_ULTIMATE.start_entry_point_~client~0#1.base|) |c_ULTIMATE.start_entry_point_~client~0#1.offset|))) (bvule .cse3 (bvadd (_ bv4 32) .cse3))))))) is different from false