./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/bubblesort-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/bubblesort-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa --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 71daa4447a811360729951159d42c752715aafb50c3ad4dcb2ed5d242a4f4a78 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:42:34,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:42:34,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:42:34,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:42:34,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:42:34,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:42:34,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:42:34,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:42:34,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:42:34,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:42:34,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:42:34,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:42:34,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:42:34,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:42:34,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:42:34,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:42:34,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:42:34,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:42:34,664 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:42:34,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:42:34,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:42:34,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:42:34,671 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:42:34,672 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:42:34,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:42:34,675 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:42:34,676 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:42:34,677 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:42:34,677 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:42:34,678 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:42:34,679 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:42:34,679 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:42:34,680 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:42:34,681 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:42:34,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:42:34,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:42:34,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:42:34,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:42:34,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:42:34,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:42:34,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:42:34,685 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-06 19:42:34,709 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:42:34,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:42:34,709 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:42:34,709 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:42:34,710 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:42:34,710 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:42:34,711 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:42:34,711 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:42:34,711 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:42:34,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:42:34,712 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 19:42:34,712 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 19:42:34,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:42:34,712 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 19:42:34,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:42:34,712 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 19:42:34,713 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 19:42:34,713 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 19:42:34,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:42:34,713 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 19:42:34,713 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 19:42:34,713 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:42:34,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:42:34,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:42:34,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:42:34,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:42:34,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:42:34,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:42:34,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:42:34,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 19:42:34,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:42:34,715 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_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71daa4447a811360729951159d42c752715aafb50c3ad4dcb2ed5d242a4f4a78 [2021-12-06 19:42:34,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:42:34,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:42:34,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:42:34,919 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:42:34,920 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:42:34,921 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/array-memsafety/bubblesort-alloca-2.i [2021-12-06 19:42:34,961 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/data/04dfcc813/8230e1290c3247699d97797cbc1ac16e/FLAGdd6713d3c [2021-12-06 19:42:35,380 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:42:35,380 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/sv-benchmarks/c/array-memsafety/bubblesort-alloca-2.i [2021-12-06 19:42:35,391 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/data/04dfcc813/8230e1290c3247699d97797cbc1ac16e/FLAGdd6713d3c [2021-12-06 19:42:35,400 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/data/04dfcc813/8230e1290c3247699d97797cbc1ac16e [2021-12-06 19:42:35,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:42:35,403 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:42:35,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:42:35,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:42:35,406 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:42:35,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:42:35" (1/1) ... [2021-12-06 19:42:35,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@590aad0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:42:35, skipping insertion in model container [2021-12-06 19:42:35,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:42:35" (1/1) ... [2021-12-06 19:42:35,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:42:35,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:42:35,624 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:42:35,631 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-12-06 19:42:35,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2b8bcb0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:42:35, skipping insertion in model container [2021-12-06 19:42:35,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:42:35,632 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-06 19:42:35,633 INFO L158 Benchmark]: Toolchain (without parser) took 229.56ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 45.2MB in the beginning and 70.7MB in the end (delta: -25.6MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. [2021-12-06 19:42:35,634 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 75.5MB. Free memory was 40.8MB in the beginning and 40.7MB in the end (delta: 72.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 19:42:35,634 INFO L158 Benchmark]: CACSL2BoogieTranslator took 227.68ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 45.0MB in the beginning and 71.0MB in the end (delta: -26.1MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. [2021-12-06 19:42:35,636 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 75.5MB. Free memory was 40.8MB in the beginning and 40.7MB in the end (delta: 72.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 227.68ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 45.0MB in the beginning and 71.0MB in the end (delta: -26.1MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 530]: 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_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/bubblesort-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa --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 71daa4447a811360729951159d42c752715aafb50c3ad4dcb2ed5d242a4f4a78 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:42:37,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:42:37,119 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:42:37,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:42:37,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:42:37,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:42:37,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:42:37,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:42:37,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:42:37,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:42:37,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:42:37,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:42:37,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:42:37,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:42:37,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:42:37,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:42:37,153 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:42:37,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:42:37,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:42:37,158 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:42:37,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:42:37,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:42:37,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:42:37,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:42:37,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:42:37,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:42:37,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:42:37,167 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:42:37,167 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:42:37,168 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:42:37,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:42:37,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:42:37,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:42:37,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:42:37,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:42:37,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:42:37,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:42:37,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:42:37,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:42:37,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:42:37,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:42:37,174 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-06 19:42:37,195 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:42:37,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:42:37,195 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:42:37,196 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:42:37,196 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:42:37,196 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:42:37,197 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:42:37,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:42:37,197 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:42:37,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:42:37,198 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 19:42:37,198 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 19:42:37,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:42:37,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 19:42:37,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:42:37,199 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 19:42:37,199 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 19:42:37,199 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 19:42:37,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:42:37,200 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 19:42:37,200 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 19:42:37,200 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 19:42:37,200 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 19:42:37,200 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:42:37,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:42:37,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:42:37,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:42:37,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:42:37,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:42:37,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:42:37,202 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 19:42:37,202 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 19:42:37,202 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:42:37,202 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 19:42:37,202 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_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71daa4447a811360729951159d42c752715aafb50c3ad4dcb2ed5d242a4f4a78 [2021-12-06 19:42:37,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:42:37,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:42:37,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:42:37,470 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:42:37,471 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:42:37,472 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/array-memsafety/bubblesort-alloca-2.i [2021-12-06 19:42:37,514 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/data/f82e2559d/ffe910e2479d4e15b41988b871f6779c/FLAGce57deddc [2021-12-06 19:42:37,960 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:42:37,960 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/sv-benchmarks/c/array-memsafety/bubblesort-alloca-2.i [2021-12-06 19:42:37,972 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/data/f82e2559d/ffe910e2479d4e15b41988b871f6779c/FLAGce57deddc [2021-12-06 19:42:37,981 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/data/f82e2559d/ffe910e2479d4e15b41988b871f6779c [2021-12-06 19:42:37,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:42:37,985 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:42:37,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:42:37,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:42:37,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:42:37,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:42:37" (1/1) ... [2021-12-06 19:42:37,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a283741 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:42:37, skipping insertion in model container [2021-12-06 19:42:37,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:42:37" (1/1) ... [2021-12-06 19:42:37,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:42:38,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:42:38,222 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:42:38,229 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-06 19:42:38,235 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:42:38,255 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:42:38,259 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:42:38,285 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:42:38,307 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:42:38,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:42:38 WrapperNode [2021-12-06 19:42:38,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:42:38,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:42:38,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:42:38,308 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:42:38,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:42:38" (1/1) ... [2021-12-06 19:42:38,325 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:42:38" (1/1) ... [2021-12-06 19:42:38,340 INFO L137 Inliner]: procedures = 117, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2021-12-06 19:42:38,340 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:42:38,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:42:38,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:42:38,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:42:38,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:42:38" (1/1) ... [2021-12-06 19:42:38,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:42:38" (1/1) ... [2021-12-06 19:42:38,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:42:38" (1/1) ... [2021-12-06 19:42:38,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:42:38" (1/1) ... [2021-12-06 19:42:38,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:42:38" (1/1) ... [2021-12-06 19:42:38,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:42:38" (1/1) ... [2021-12-06 19:42:38,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:42:38" (1/1) ... [2021-12-06 19:42:38,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:42:38,363 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:42:38,363 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:42:38,363 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:42:38,364 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:42:38" (1/1) ... [2021-12-06 19:42:38,369 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:42:38,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:42:38,387 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:42:38,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:42:38,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-06 19:42:38,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 19:42:38,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 19:42:38,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-06 19:42:38,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:42:38,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:42:38,501 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:42:38,502 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:42:38,807 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:42:38,813 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:42:38,814 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-06 19:42:38,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:42:38 BoogieIcfgContainer [2021-12-06 19:42:38,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:42:38,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:42:38,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:42:38,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:42:38,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:42:37" (1/3) ... [2021-12-06 19:42:38,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ed68d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:42:38, skipping insertion in model container [2021-12-06 19:42:38,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:42:38" (2/3) ... [2021-12-06 19:42:38,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ed68d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:42:38, skipping insertion in model container [2021-12-06 19:42:38,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:42:38" (3/3) ... [2021-12-06 19:42:38,823 INFO L111 eAbstractionObserver]: Analyzing ICFG bubblesort-alloca-2.i [2021-12-06 19:42:38,829 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:42:38,829 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2021-12-06 19:42:38,865 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:42:38,870 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 19:42:38,870 INFO L340 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2021-12-06 19:42:38,882 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 25 states have (on average 1.92) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:42:38,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 19:42:38,886 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:42:38,887 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 19:42:38,887 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:42:38,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:42:38,891 INFO L85 PathProgramCache]: Analyzing trace with hash 889508873, now seen corresponding path program 1 times [2021-12-06 19:42:38,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:42:38,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563858613] [2021-12-06 19:42:38,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:42:38,905 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:42:38,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:42:38,906 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:42:38,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 19:42:38,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:38,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 19:42:38,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:42:39,024 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 [2021-12-06 19:42:39,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:42:39,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:42:39,039 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:42:39,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [563858613] [2021-12-06 19:42:39,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [563858613] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:42:39,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:42:39,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 19:42:39,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329132597] [2021-12-06 19:42:39,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:42:39,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:42:39,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:42:39,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:42:39,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:42:39,066 INFO L87 Difference]: Start difference. First operand has 41 states, 25 states have (on average 1.92) internal successors, (48), 40 states have internal predecessors, (48), 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 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:42:39,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:42:39,165 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2021-12-06 19:42:39,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:42:39,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-06 19:42:39,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:42:39,172 INFO L225 Difference]: With dead ends: 40 [2021-12-06 19:42:39,172 INFO L226 Difference]: Without dead ends: 38 [2021-12-06 19:42:39,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:42:39,176 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 34 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:42:39,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 31 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:42:39,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-12-06 19:42:39,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-12-06 19:42:39,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 24 states have (on average 1.75) internal successors, (42), 37 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) [2021-12-06 19:42:39,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2021-12-06 19:42:39,201 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 6 [2021-12-06 19:42:39,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:42:39,201 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2021-12-06 19:42:39,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:42:39,201 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2021-12-06 19:42:39,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 19:42:39,201 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:42:39,202 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 19:42:39,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 19:42:39,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:42:39,404 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:42:39,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:42:39,406 INFO L85 PathProgramCache]: Analyzing trace with hash 889508874, now seen corresponding path program 1 times [2021-12-06 19:42:39,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:42:39,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [527584273] [2021-12-06 19:42:39,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:42:39,409 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:42:39,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:42:39,412 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:42:39,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 19:42:39,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:39,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 19:42:39,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:42:39,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 19:42:39,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:42:39,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:42:39,551 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:42:39,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [527584273] [2021-12-06 19:42:39,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [527584273] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:42:39,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:42:39,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:42:39,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235671332] [2021-12-06 19:42:39,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:42:39,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:42:39,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:42:39,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:42:39,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:42:39,554 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:42:39,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:42:39,784 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2021-12-06 19:42:39,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:42:39,785 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-06 19:42:39,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:42:39,786 INFO L225 Difference]: With dead ends: 77 [2021-12-06 19:42:39,786 INFO L226 Difference]: Without dead ends: 77 [2021-12-06 19:42:39,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:42:39,788 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 43 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:42:39,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 145 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:42:39,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-12-06 19:42:39,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 41. [2021-12-06 19:42:39,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:42:39,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2021-12-06 19:42:39,796 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 6 [2021-12-06 19:42:39,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:42:39,796 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2021-12-06 19:42:39,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:42:39,797 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2021-12-06 19:42:39,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 19:42:39,797 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:42:39,797 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 19:42:39,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 19:42:39,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:42:39,999 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:42:40,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:42:40,002 INFO L85 PathProgramCache]: Analyzing trace with hash 889568456, now seen corresponding path program 1 times [2021-12-06 19:42:40,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:42:40,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1935993606] [2021-12-06 19:42:40,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:42:40,006 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:42:40,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:42:40,009 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:42:40,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-06 19:42:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:40,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 19:42:40,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:42:40,125 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 8 treesize of output 7 [2021-12-06 19:42:40,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:42:40,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:42:40,179 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:42:40,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1935993606] [2021-12-06 19:42:40,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1935993606] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:42:40,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:42:40,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:42:40,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267650711] [2021-12-06 19:42:40,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:42:40,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:42:40,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:42:40,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:42:40,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:42:40,181 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:42:40,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:42:40,210 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2021-12-06 19:42:40,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:42:40,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-06 19:42:40,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:42:40,211 INFO L225 Difference]: With dead ends: 43 [2021-12-06 19:42:40,211 INFO L226 Difference]: Without dead ends: 43 [2021-12-06 19:42:40,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:42:40,212 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:42:40,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 94 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 19 Unchecked, 0.0s Time] [2021-12-06 19:42:40,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-12-06 19:42:40,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2021-12-06 19:42:40,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 41 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:42:40,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2021-12-06 19:42:40,216 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 6 [2021-12-06 19:42:40,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:42:40,216 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2021-12-06 19:42:40,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:42:40,217 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2021-12-06 19:42:40,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 19:42:40,217 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:42:40,217 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:42:40,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-06 19:42:40,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:42:40,419 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:42:40,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:42:40,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1184052082, now seen corresponding path program 1 times [2021-12-06 19:42:40,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:42:40,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883442523] [2021-12-06 19:42:40,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:42:40,424 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:42:40,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:42:40,427 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:42:40,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-06 19:42:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:40,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 19:42:40,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:42:40,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:42:40,614 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:42:40,614 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:42:40,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883442523] [2021-12-06 19:42:40,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883442523] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:42:40,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:42:40,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:42:40,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133808661] [2021-12-06 19:42:40,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:42:40,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:42:40,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:42:40,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:42:40,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:42:40,616 INFO L87 Difference]: Start difference. First operand 42 states and 47 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) [2021-12-06 19:42:40,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:42:40,666 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2021-12-06 19:42:40,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:42:40,667 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 [2021-12-06 19:42:40,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:42:40,668 INFO L225 Difference]: With dead ends: 67 [2021-12-06 19:42:40,668 INFO L226 Difference]: Without dead ends: 67 [2021-12-06 19:42:40,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:42:40,669 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 88 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:42:40,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 68 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:42:40,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-12-06 19:42:40,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 43. [2021-12-06 19:42:40,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 42 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:42:40,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2021-12-06 19:42:40,673 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 9 [2021-12-06 19:42:40,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:42:40,674 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2021-12-06 19:42:40,674 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) [2021-12-06 19:42:40,674 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2021-12-06 19:42:40,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 19:42:40,674 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:42:40,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:42:40,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-06 19:42:40,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:42:40,876 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:42:40,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:42:40,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1184052884, now seen corresponding path program 1 times [2021-12-06 19:42:40,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:42:40,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1022597546] [2021-12-06 19:42:40,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:42:40,880 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:42:40,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:42:40,883 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:42:40,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-06 19:42:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:40,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 19:42:40,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:42:41,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 19:42:41,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:42:41,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:42:41,068 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:42:41,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1022597546] [2021-12-06 19:42:41,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1022597546] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:42:41,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:42:41,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:42:41,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889414661] [2021-12-06 19:42:41,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:42:41,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:42:41,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:42:41,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:42:41,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:42:41,070 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 4 states, 3 states have (on average 3.0) 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) [2021-12-06 19:42:41,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:42:41,183 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2021-12-06 19:42:41,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:42:41,184 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 [2021-12-06 19:42:41,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:42:41,184 INFO L225 Difference]: With dead ends: 37 [2021-12-06 19:42:41,184 INFO L226 Difference]: Without dead ends: 37 [2021-12-06 19:42:41,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:42:41,185 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 48 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:42:41,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 28 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:42:41,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-12-06 19:42:41,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-12-06 19:42:41,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 36 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) [2021-12-06 19:42:41,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2021-12-06 19:42:41,188 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 9 [2021-12-06 19:42:41,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:42:41,189 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2021-12-06 19:42:41,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:42:41,189 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2021-12-06 19:42:41,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 19:42:41,189 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:42:41,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:42:41,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-06 19:42:41,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:42:41,391 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:42:41,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:42:41,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1184052885, now seen corresponding path program 1 times [2021-12-06 19:42:41,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:42:41,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2023375490] [2021-12-06 19:42:41,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:42:41,394 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:42:41,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:42:41,396 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:42:41,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-06 19:42:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:41,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 19:42:41,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:42:41,499 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 8 treesize of output 7 [2021-12-06 19:42:41,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:42:41,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:42:41,627 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:42:41,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2023375490] [2021-12-06 19:42:41,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2023375490] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:42:41,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:42:41,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:42:41,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708771270] [2021-12-06 19:42:41,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:42:41,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:42:41,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:42:41,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:42:41,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:42:41,628 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 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) [2021-12-06 19:42:41,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:42:41,649 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2021-12-06 19:42:41,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:42:41,649 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 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 [2021-12-06 19:42:41,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:42:41,650 INFO L225 Difference]: With dead ends: 41 [2021-12-06 19:42:41,650 INFO L226 Difference]: Without dead ends: 41 [2021-12-06 19:42:41,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:42:41,651 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 2 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:42:41,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 86 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 34 Unchecked, 0.0s Time] [2021-12-06 19:42:41,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-12-06 19:42:41,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-12-06 19:42:41,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 40 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:42:41,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2021-12-06 19:42:41,654 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 9 [2021-12-06 19:42:41,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:42:41,654 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2021-12-06 19:42:41,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 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) [2021-12-06 19:42:41,655 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2021-12-06 19:42:41,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 19:42:41,655 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:42:41,655 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:42:41,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-06 19:42:41,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:42:41,857 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:42:41,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:42:41,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1091210163, now seen corresponding path program 1 times [2021-12-06 19:42:41,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:42:41,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929229264] [2021-12-06 19:42:41,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:42:41,861 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:42:41,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:42:41,863 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:42:41,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-06 19:42:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:41,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 19:42:41,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:42:41,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:42:41,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:42:42,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:42:42,000 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:42:42,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929229264] [2021-12-06 19:42:42,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [929229264] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:42:42,001 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:42:42,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-06 19:42:42,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097689130] [2021-12-06 19:42:42,001 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:42:42,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:42:42,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:42:42,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:42:42,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:42:42,002 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 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) [2021-12-06 19:42:42,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:42:42,059 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2021-12-06 19:42:42,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:42:42,060 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 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 10 [2021-12-06 19:42:42,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:42:42,060 INFO L225 Difference]: With dead ends: 69 [2021-12-06 19:42:42,060 INFO L226 Difference]: Without dead ends: 69 [2021-12-06 19:42:42,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:42:42,061 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 81 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:42:42,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 191 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:42:42,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-12-06 19:42:42,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 45. [2021-12-06 19:42:42,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 44 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) [2021-12-06 19:42:42,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2021-12-06 19:42:42,065 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 10 [2021-12-06 19:42:42,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:42:42,066 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2021-12-06 19:42:42,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 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) [2021-12-06 19:42:42,066 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2021-12-06 19:42:42,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 19:42:42,066 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:42:42,066 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:42:42,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-06 19:42:42,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:42:42,268 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:42:42,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:42:42,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1900556789, now seen corresponding path program 1 times [2021-12-06 19:42:42,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:42:42,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970148728] [2021-12-06 19:42:42,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:42:42,281 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:42:42,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:42:42,284 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:42:42,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-06 19:42:42,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:42,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 19:42:42,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:42:42,420 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 8 treesize of output 7 [2021-12-06 19:42:42,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:42:42,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:42:43,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:42:43,010 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:42:43,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970148728] [2021-12-06 19:42:43,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970148728] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:42:43,011 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:42:43,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-12-06 19:42:43,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026873504] [2021-12-06 19:42:43,011 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:42:43,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 19:42:43,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:42:43,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 19:42:43,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:42:43,012 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 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) [2021-12-06 19:42:43,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:42:43,557 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2021-12-06 19:42:43,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:42:43,558 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 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 10 [2021-12-06 19:42:43,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:42:43,559 INFO L225 Difference]: With dead ends: 73 [2021-12-06 19:42:43,559 INFO L226 Difference]: Without dead ends: 73 [2021-12-06 19:42:43,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:42:43,559 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 114 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:42:43,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 111 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 121 Invalid, 0 Unknown, 23 Unchecked, 0.5s Time] [2021-12-06 19:42:43,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-12-06 19:42:43,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 49. [2021-12-06 19:42:43,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 48 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) [2021-12-06 19:42:43,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2021-12-06 19:42:43,563 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 10 [2021-12-06 19:42:43,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:42:43,563 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2021-12-06 19:42:43,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 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) [2021-12-06 19:42:43,564 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2021-12-06 19:42:43,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 19:42:43,564 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:42:43,564 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:42:43,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-06 19:42:43,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:42:43,765 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:42:43,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:42:43,766 INFO L85 PathProgramCache]: Analyzing trace with hash 363894000, now seen corresponding path program 1 times [2021-12-06 19:42:43,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:42:43,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567949539] [2021-12-06 19:42:43,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:42:43,766 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:42:43,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:42:43,767 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:42:43,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-06 19:42:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:43,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 19:42:43,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:42:43,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:42:43,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:42:43,836 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:42:43,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567949539] [2021-12-06 19:42:43,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1567949539] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:42:43,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:42:43,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:42:43,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287513258] [2021-12-06 19:42:43,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:42:43,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:42:43,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:42:43,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:42:43,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:42:43,838 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:42:44,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:42:44,034 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2021-12-06 19:42:44,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:42:44,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 [2021-12-06 19:42:44,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:42:44,036 INFO L225 Difference]: With dead ends: 75 [2021-12-06 19:42:44,036 INFO L226 Difference]: Without dead ends: 75 [2021-12-06 19:42:44,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:42:44,037 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 29 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:42:44,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 138 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:42:44,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-12-06 19:42:44,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 52. [2021-12-06 19:42:44,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.3181818181818181) internal successors, (58), 51 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:42:44,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2021-12-06 19:42:44,042 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 13 [2021-12-06 19:42:44,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:42:44,043 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2021-12-06 19:42:44,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:42:44,043 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2021-12-06 19:42:44,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 19:42:44,043 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:42:44,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:42:44,051 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-12-06 19:42:44,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:42:44,245 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:42:44,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:42:44,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1064958578, now seen corresponding path program 1 times [2021-12-06 19:42:44,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:42:44,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101117532] [2021-12-06 19:42:44,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:42:44,250 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:42:44,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:42:44,253 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:42:44,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-06 19:42:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:44,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 19:42:44,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:42:44,337 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 8 treesize of output 7 [2021-12-06 19:42:44,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:42:44,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:42:44,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:42:44,856 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:42:44,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1101117532] [2021-12-06 19:42:44,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1101117532] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 19:42:44,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:42:44,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2021-12-06 19:42:44,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545821916] [2021-12-06 19:42:44,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:42:44,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:42:44,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:42:44,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:42:44,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:42:44,857 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:42:45,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:42:45,250 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2021-12-06 19:42:45,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:42:45,251 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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 [2021-12-06 19:42:45,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:42:45,251 INFO L225 Difference]: With dead ends: 57 [2021-12-06 19:42:45,251 INFO L226 Difference]: Without dead ends: 57 [2021-12-06 19:42:45,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:42:45,252 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 81 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:42:45,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 45 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:42:45,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-06 19:42:45,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2021-12-06 19:42:45,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 51 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:42:45,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2021-12-06 19:42:45,256 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 13 [2021-12-06 19:42:45,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:42:45,257 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2021-12-06 19:42:45,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:42:45,257 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2021-12-06 19:42:45,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 19:42:45,257 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:42:45,258 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:42:45,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-12-06 19:42:45,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:42:45,459 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:42:45,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:42:45,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1346022463, now seen corresponding path program 1 times [2021-12-06 19:42:45,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:42:45,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141362538] [2021-12-06 19:42:45,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:42:45,464 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:42:45,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:42:45,467 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:42:45,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-06 19:42:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:45,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 19:42:45,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:42:45,522 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 8 treesize of output 7 [2021-12-06 19:42:45,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:42:45,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:42:45,691 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:42:45,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141362538] [2021-12-06 19:42:45,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1141362538] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:42:45,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:42:45,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:42:45,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636693491] [2021-12-06 19:42:45,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:42:45,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:42:45,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:42:45,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:42:45,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:42:45,692 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 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) [2021-12-06 19:42:45,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:42:45,929 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2021-12-06 19:42:45,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 19:42:45,930 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 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 [2021-12-06 19:42:45,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:42:45,931 INFO L225 Difference]: With dead ends: 63 [2021-12-06 19:42:45,931 INFO L226 Difference]: Without dead ends: 63 [2021-12-06 19:42:45,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:42:45,932 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 23 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:42:45,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 82 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 22 Unchecked, 0.1s Time] [2021-12-06 19:42:45,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-12-06 19:42:45,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 55. [2021-12-06 19:42:45,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 54 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:42:45,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2021-12-06 19:42:45,935 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 14 [2021-12-06 19:42:45,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:42:45,935 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2021-12-06 19:42:45,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 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) [2021-12-06 19:42:45,935 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2021-12-06 19:42:45,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 19:42:45,935 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:42:45,935 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:42:45,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-12-06 19:42:46,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:42:46,137 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:42:46,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:42:46,138 INFO L85 PathProgramCache]: Analyzing trace with hash 267720213, now seen corresponding path program 1 times [2021-12-06 19:42:46,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:42:46,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1703214083] [2021-12-06 19:42:46,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:42:46,140 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:42:46,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:42:46,141 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:42:46,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-06 19:42:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:46,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 19:42:46,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:42:48,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 19:42:48,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:42:48,289 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:42:48,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1703214083] [2021-12-06 19:42:48,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1703214083] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:42:48,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:42:48,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:42:48,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550813093] [2021-12-06 19:42:48,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:42:48,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:42:48,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:42:48,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:42:48,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=11, Unknown=1, NotChecked=0, Total=20 [2021-12-06 19:42:48,291 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) [2021-12-06 19:42:48,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:42:48,295 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2021-12-06 19:42:48,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:42:48,295 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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 16 [2021-12-06 19:42:48,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:42:48,296 INFO L225 Difference]: With dead ends: 61 [2021-12-06 19:42:48,296 INFO L226 Difference]: Without dead ends: 59 [2021-12-06 19:42:48,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=8, Invalid=11, Unknown=1, NotChecked=0, Total=20 [2021-12-06 19:42:48,297 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 1 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:42:48,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 96 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 25 Unchecked, 0.0s Time] [2021-12-06 19:42:48,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-12-06 19:42:48,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2021-12-06 19:42:48,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 52 states have (on average 1.2884615384615385) internal successors, (67), 57 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:42:48,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2021-12-06 19:42:48,301 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 16 [2021-12-06 19:42:48,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:42:48,302 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2021-12-06 19:42:48,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) [2021-12-06 19:42:48,302 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2021-12-06 19:42:48,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 19:42:48,302 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:42:48,303 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:42:48,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-12-06 19:42:48,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:42:48,504 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:42:48,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:42:48,505 INFO L85 PathProgramCache]: Analyzing trace with hash -743397037, now seen corresponding path program 1 times [2021-12-06 19:42:48,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:42:48,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957724107] [2021-12-06 19:42:48,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:42:48,508 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:42:48,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:42:48,511 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:42:48,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-06 19:42:48,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:48,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 19:42:48,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:42:50,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 19:42:50,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:42:50,633 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:42:50,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957724107] [2021-12-06 19:42:50,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957724107] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:42:50,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:42:50,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:42:50,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146407229] [2021-12-06 19:42:50,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:42:50,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:42:50,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:42:50,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:42:50,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=11, Unknown=1, NotChecked=0, Total=20 [2021-12-06 19:42:50,634 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) [2021-12-06 19:42:50,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:42:50,679 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2021-12-06 19:42:50,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:42:50,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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 16 [2021-12-06 19:42:50,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:42:50,680 INFO L225 Difference]: With dead ends: 64 [2021-12-06 19:42:50,680 INFO L226 Difference]: Without dead ends: 62 [2021-12-06 19:42:50,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=8, Invalid=11, Unknown=1, NotChecked=0, Total=20 [2021-12-06 19:42:50,681 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 3 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:42:50,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 66 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 14 Unchecked, 0.0s Time] [2021-12-06 19:42:50,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-12-06 19:42:50,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2021-12-06 19:42:50,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 52 states have (on average 1.2884615384615385) internal successors, (67), 57 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:42:50,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2021-12-06 19:42:50,684 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 16 [2021-12-06 19:42:50,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:42:50,684 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2021-12-06 19:42:50,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) [2021-12-06 19:42:50,684 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2021-12-06 19:42:50,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 19:42:50,685 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:42:50,685 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:42:50,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-12-06 19:42:50,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:42:50,886 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:42:50,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:42:50,887 INFO L85 PathProgramCache]: Analyzing trace with hash -290583109, now seen corresponding path program 1 times [2021-12-06 19:42:50,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:42:50,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455223087] [2021-12-06 19:42:50,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:42:50,889 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:42:50,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:42:50,891 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:42:50,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-06 19:42:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:50,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 19:42:50,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:42:50,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:42:50,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:42:51,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:42:51,023 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:42:51,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455223087] [2021-12-06 19:42:51,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455223087] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:42:51,024 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:42:51,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-06 19:42:51,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098790776] [2021-12-06 19:42:51,024 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:42:51,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:42:51,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:42:51,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:42:51,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:42:51,025 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 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) [2021-12-06 19:42:51,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:42:51,083 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2021-12-06 19:42:51,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:42:51,083 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 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 17 [2021-12-06 19:42:51,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:42:51,084 INFO L225 Difference]: With dead ends: 60 [2021-12-06 19:42:51,084 INFO L226 Difference]: Without dead ends: 49 [2021-12-06 19:42:51,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:42:51,084 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 5 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:42:51,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 154 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:42:51,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-12-06 19:42:51,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-12-06 19:42:51,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 48 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:42:51,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2021-12-06 19:42:51,087 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 17 [2021-12-06 19:42:51,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:42:51,087 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2021-12-06 19:42:51,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 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) [2021-12-06 19:42:51,087 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2021-12-06 19:42:51,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 19:42:51,087 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:42:51,088 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:42:51,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-12-06 19:42:51,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:42:51,288 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:42:51,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:42:51,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1570446787, now seen corresponding path program 1 times [2021-12-06 19:42:51,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:42:51,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [296210033] [2021-12-06 19:42:51,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:42:51,289 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:42:51,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:42:51,289 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:42:51,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-06 19:42:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:51,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 19:42:51,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:42:51,393 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:42:51,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:42:51,394 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:42:51,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [296210033] [2021-12-06 19:42:51,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [296210033] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:42:51,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:42:51,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:42:51,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673811326] [2021-12-06 19:42:51,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:42:51,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:42:51,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:42:51,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:42:51,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:42:51,395 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 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) [2021-12-06 19:42:51,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:42:51,600 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2021-12-06 19:42:51,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:42:51,600 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 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 [2021-12-06 19:42:51,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:42:51,601 INFO L225 Difference]: With dead ends: 74 [2021-12-06 19:42:51,601 INFO L226 Difference]: Without dead ends: 72 [2021-12-06 19:42:51,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:42:51,602 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 102 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:42:51,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 75 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:42:51,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-12-06 19:42:51,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 46. [2021-12-06 19:42:51,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 40 states have (on average 1.3) internal successors, (52), 45 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) [2021-12-06 19:42:51,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2021-12-06 19:42:51,604 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 17 [2021-12-06 19:42:51,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:42:51,604 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2021-12-06 19:42:51,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 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) [2021-12-06 19:42:51,604 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2021-12-06 19:42:51,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 19:42:51,605 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:42:51,605 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1] [2021-12-06 19:42:51,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-12-06 19:42:51,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:42:51,806 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:42:51,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:42:51,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1817992175, now seen corresponding path program 2 times [2021-12-06 19:42:51,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:42:51,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [300742882] [2021-12-06 19:42:51,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:42:51,807 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:42:51,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:42:51,808 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:42:51,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-06 19:42:51,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:42:51,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:42:51,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 19:42:51,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:42:51,950 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 8 treesize of output 7 [2021-12-06 19:42:52,203 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:42:52,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:42:53,149 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:42:53,149 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:42:53,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [300742882] [2021-12-06 19:42:53,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [300742882] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:42:53,150 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:42:53,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-12-06 19:42:53,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830137463] [2021-12-06 19:42:53,150 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:42:53,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 19:42:53,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:42:53,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 19:42:53,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-12-06 19:42:53,151 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:42:55,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:42:55,694 INFO L93 Difference]: Finished difference Result 197 states and 222 transitions. [2021-12-06 19:42:55,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 19:42:55,696 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 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 [2021-12-06 19:42:55,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:42:55,697 INFO L225 Difference]: With dead ends: 197 [2021-12-06 19:42:55,697 INFO L226 Difference]: Without dead ends: 197 [2021-12-06 19:42:55,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2021-12-06 19:42:55,698 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 279 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:42:55,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 266 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 274 Invalid, 0 Unknown, 57 Unchecked, 1.4s Time] [2021-12-06 19:42:55,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-12-06 19:42:55,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 62. [2021-12-06 19:42:55,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 56 states have (on average 1.2857142857142858) internal successors, (72), 61 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:42:55,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2021-12-06 19:42:55,701 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 18 [2021-12-06 19:42:55,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:42:55,701 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2021-12-06 19:42:55,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:42:55,701 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2021-12-06 19:42:55,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 19:42:55,702 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:42:55,702 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:42:55,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-12-06 19:42:55,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:42:55,903 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:42:55,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:42:55,904 INFO L85 PathProgramCache]: Analyzing trace with hash -511718013, now seen corresponding path program 1 times [2021-12-06 19:42:55,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:42:55,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1598983238] [2021-12-06 19:42:55,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:42:55,905 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:42:55,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:42:55,907 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:42:55,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-06 19:42:55,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:55,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 19:42:55,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:42:56,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:42:56,036 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:42:56,036 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:42:56,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1598983238] [2021-12-06 19:42:56,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1598983238] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:42:56,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:42:56,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:42:56,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503360074] [2021-12-06 19:42:56,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:42:56,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:42:56,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:42:56,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:42:56,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:42:56,038 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 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) [2021-12-06 19:42:56,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:42:56,148 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2021-12-06 19:42:56,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:42:56,149 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 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 18 [2021-12-06 19:42:56,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:42:56,150 INFO L225 Difference]: With dead ends: 77 [2021-12-06 19:42:56,150 INFO L226 Difference]: Without dead ends: 77 [2021-12-06 19:42:56,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:42:56,151 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 79 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:42:56,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 53 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:42:56,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-12-06 19:42:56,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 70. [2021-12-06 19:42:56,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 64 states have (on average 1.28125) internal successors, (82), 69 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:42:56,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 82 transitions. [2021-12-06 19:42:56,154 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 82 transitions. Word has length 18 [2021-12-06 19:42:56,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:42:56,154 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 82 transitions. [2021-12-06 19:42:56,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 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) [2021-12-06 19:42:56,154 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 82 transitions. [2021-12-06 19:42:56,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 19:42:56,155 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:42:56,155 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:42:56,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-12-06 19:42:56,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:42:56,356 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:42:56,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:42:56,357 INFO L85 PathProgramCache]: Analyzing trace with hash -511225436, now seen corresponding path program 1 times [2021-12-06 19:42:56,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:42:56,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [483709483] [2021-12-06 19:42:56,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:42:56,359 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:42:56,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:42:56,361 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:42:56,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-06 19:42:56,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:56,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 19:42:56,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:42:56,430 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 8 treesize of output 7 [2021-12-06 19:42:57,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:42:57,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:42:58,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:42:58,529 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:42:58,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [483709483] [2021-12-06 19:42:58,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [483709483] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:42:58,530 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:42:58,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2021-12-06 19:42:58,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292070131] [2021-12-06 19:42:58,530 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:42:58,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 19:42:58,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:42:58,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 19:42:58,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:42:58,531 INFO L87 Difference]: Start difference. First operand 70 states and 82 transitions. Second operand has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:42:58,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:42:58,917 INFO L93 Difference]: Finished difference Result 82 states and 98 transitions. [2021-12-06 19:42:58,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 19:42:58,917 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 states have internal predecessors, (34), 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 [2021-12-06 19:42:58,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:42:58,918 INFO L225 Difference]: With dead ends: 82 [2021-12-06 19:42:58,918 INFO L226 Difference]: Without dead ends: 82 [2021-12-06 19:42:58,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-12-06 19:42:58,918 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 22 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:42:58,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 98 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 24 Unchecked, 0.2s Time] [2021-12-06 19:42:58,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-12-06 19:42:58,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 75. [2021-12-06 19:42:58,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.3142857142857143) internal successors, (92), 74 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:42:58,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2021-12-06 19:42:58,921 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 18 [2021-12-06 19:42:58,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:42:58,921 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2021-12-06 19:42:58,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:42:58,921 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2021-12-06 19:42:58,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-06 19:42:58,922 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:42:58,922 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:42:58,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-12-06 19:42:59,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:42:59,123 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:42:59,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:42:59,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1331880655, now seen corresponding path program 1 times [2021-12-06 19:42:59,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:42:59,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904900472] [2021-12-06 19:42:59,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:42:59,126 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:42:59,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:42:59,128 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:42:59,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-06 19:42:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:59,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 19:42:59,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:42:59,200 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 8 treesize of output 7 [2021-12-06 19:42:59,372 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:42:59,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:43:00,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:43:00,466 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:43:00,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904900472] [2021-12-06 19:43:00,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [904900472] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:43:00,466 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:43:00,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-12-06 19:43:00,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375623361] [2021-12-06 19:43:00,466 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:43:00,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 19:43:00,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:43:00,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 19:43:00,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-12-06 19:43:00,467 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:01,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:43:01,184 INFO L93 Difference]: Finished difference Result 79 states and 95 transitions. [2021-12-06 19:43:01,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:43:01,186 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 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 [2021-12-06 19:43:01,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:43:01,186 INFO L225 Difference]: With dead ends: 79 [2021-12-06 19:43:01,186 INFO L226 Difference]: Without dead ends: 74 [2021-12-06 19:43:01,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-12-06 19:43:01,187 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 29 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:43:01,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 133 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 140 Invalid, 0 Unknown, 8 Unchecked, 0.6s Time] [2021-12-06 19:43:01,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-12-06 19:43:01,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 67. [2021-12-06 19:43:01,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 63 states have (on average 1.2698412698412698) internal successors, (80), 66 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:01,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2021-12-06 19:43:01,189 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 19 [2021-12-06 19:43:01,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:43:01,189 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2021-12-06 19:43:01,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:01,190 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2021-12-06 19:43:01,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-06 19:43:01,190 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:43:01,190 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:43:01,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-12-06 19:43:01,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:43:01,391 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:43:01,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:43:01,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1637861780, now seen corresponding path program 2 times [2021-12-06 19:43:01,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:43:01,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1336143724] [2021-12-06 19:43:01,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:43:01,394 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:43:01,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:43:01,397 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:43:01,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-06 19:43:01,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:43:01,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:43:01,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-06 19:43:01,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:43:01,482 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 8 treesize of output 7 [2021-12-06 19:43:01,871 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 19:43:01,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:43:03,752 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 19:43:03,753 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:43:03,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1336143724] [2021-12-06 19:43:03,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1336143724] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:43:03,753 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:43:03,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-12-06 19:43:03,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148252747] [2021-12-06 19:43:03,753 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:43:03,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 19:43:03,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:43:03,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 19:43:03,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-12-06 19:43:03,754 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand has 16 states, 15 states have (on average 2.4) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:08,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:43:08,435 INFO L93 Difference]: Finished difference Result 153 states and 177 transitions. [2021-12-06 19:43:08,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-06 19:43:08,437 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 16 states have internal predecessors, (36), 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 [2021-12-06 19:43:08,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:43:08,438 INFO L225 Difference]: With dead ends: 153 [2021-12-06 19:43:08,438 INFO L226 Difference]: Without dead ends: 153 [2021-12-06 19:43:08,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=335, Invalid=855, Unknown=0, NotChecked=0, Total=1190 [2021-12-06 19:43:08,439 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 154 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:43:08,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 157 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 204 Invalid, 0 Unknown, 43 Unchecked, 1.3s Time] [2021-12-06 19:43:08,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-12-06 19:43:08,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 110. [2021-12-06 19:43:08,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 106 states have (on average 1.2735849056603774) internal successors, (135), 109 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:08,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 135 transitions. [2021-12-06 19:43:08,441 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 135 transitions. Word has length 23 [2021-12-06 19:43:08,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:43:08,442 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 135 transitions. [2021-12-06 19:43:08,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:08,442 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 135 transitions. [2021-12-06 19:43:08,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 19:43:08,442 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:43:08,442 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:43:08,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-12-06 19:43:08,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:43:08,644 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:43:08,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:43:08,645 INFO L85 PathProgramCache]: Analyzing trace with hash -2028106434, now seen corresponding path program 1 times [2021-12-06 19:43:08,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:43:08,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136279581] [2021-12-06 19:43:08,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:43:08,646 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:43:08,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:43:08,649 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:43:08,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-12-06 19:43:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:08,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 19:43:08,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:43:08,866 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 19:43:08,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:43:09,037 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 19:43:09,038 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:43:09,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2136279581] [2021-12-06 19:43:09,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2136279581] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:43:09,038 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:43:09,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2021-12-06 19:43:09,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734430462] [2021-12-06 19:43:09,038 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:43:09,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 19:43:09,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:43:09,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 19:43:09,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-12-06 19:43:09,039 INFO L87 Difference]: Start difference. First operand 110 states and 135 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:09,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:43:09,585 INFO L93 Difference]: Finished difference Result 166 states and 197 transitions. [2021-12-06 19:43:09,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 19:43:09,586 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 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 [2021-12-06 19:43:09,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:43:09,587 INFO L225 Difference]: With dead ends: 166 [2021-12-06 19:43:09,587 INFO L226 Difference]: Without dead ends: 166 [2021-12-06 19:43:09,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2021-12-06 19:43:09,587 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 197 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:43:09,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 98 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 19:43:09,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-12-06 19:43:09,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 137. [2021-12-06 19:43:09,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 133 states have (on average 1.255639097744361) internal successors, (167), 136 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:09,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 167 transitions. [2021-12-06 19:43:09,591 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 167 transitions. Word has length 25 [2021-12-06 19:43:09,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:43:09,591 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 167 transitions. [2021-12-06 19:43:09,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:09,591 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 167 transitions. [2021-12-06 19:43:09,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-06 19:43:09,591 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:43:09,592 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:43:09,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-12-06 19:43:09,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:43:09,793 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:43:09,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:43:09,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1990878972, now seen corresponding path program 2 times [2021-12-06 19:43:09,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:43:09,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956442195] [2021-12-06 19:43:09,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:43:09,796 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:43:09,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:43:09,798 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:43:09,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-12-06 19:43:09,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-06 19:43:09,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:43:09,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 19:43:09,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:43:09,977 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 19:43:09,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:43:09,977 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:43:09,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956442195] [2021-12-06 19:43:09,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956442195] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:43:09,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:43:09,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:43:09,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098034853] [2021-12-06 19:43:09,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:43:09,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:43:09,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:43:09,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:43:09,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:43:09,979 INFO L87 Difference]: Start difference. First operand 137 states and 167 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 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) [2021-12-06 19:43:10,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:43:10,011 INFO L93 Difference]: Finished difference Result 165 states and 202 transitions. [2021-12-06 19:43:10,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:43:10,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 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 28 [2021-12-06 19:43:10,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:43:10,012 INFO L225 Difference]: With dead ends: 165 [2021-12-06 19:43:10,012 INFO L226 Difference]: Without dead ends: 163 [2021-12-06 19:43:10,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:43:10,013 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 4 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:43:10,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 75 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 18 Unchecked, 0.0s Time] [2021-12-06 19:43:10,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-12-06 19:43:10,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 157. [2021-12-06 19:43:10,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 153 states have (on average 1.2810457516339868) internal successors, (196), 156 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:10,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 196 transitions. [2021-12-06 19:43:10,016 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 196 transitions. Word has length 28 [2021-12-06 19:43:10,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:43:10,017 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 196 transitions. [2021-12-06 19:43:10,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 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) [2021-12-06 19:43:10,017 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 196 transitions. [2021-12-06 19:43:10,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 19:43:10,017 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:43:10,017 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:43:10,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-12-06 19:43:10,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:43:10,218 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:43:10,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:43:10,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1587681108, now seen corresponding path program 1 times [2021-12-06 19:43:10,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:43:10,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [825298463] [2021-12-06 19:43:10,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:43:10,221 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:43:10,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:43:10,224 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:43:10,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-12-06 19:43:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:10,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 19:43:10,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:43:10,447 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 19:43:10,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:43:10,680 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 19:43:10,680 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:43:10,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [825298463] [2021-12-06 19:43:10,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [825298463] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:43:10,680 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:43:10,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2021-12-06 19:43:10,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431250316] [2021-12-06 19:43:10,681 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:43:10,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 19:43:10,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:43:10,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 19:43:10,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-12-06 19:43:10,682 INFO L87 Difference]: Start difference. First operand 157 states and 196 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:11,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:43:11,562 INFO L93 Difference]: Finished difference Result 207 states and 251 transitions. [2021-12-06 19:43:11,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 19:43:11,563 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 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 [2021-12-06 19:43:11,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:43:11,564 INFO L225 Difference]: With dead ends: 207 [2021-12-06 19:43:11,564 INFO L226 Difference]: Without dead ends: 197 [2021-12-06 19:43:11,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=232, Invalid=760, Unknown=0, NotChecked=0, Total=992 [2021-12-06 19:43:11,565 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 217 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:43:11,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 122 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:43:11,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-12-06 19:43:11,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 156. [2021-12-06 19:43:11,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 152 states have (on average 1.263157894736842) internal successors, (192), 155 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:11,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 192 transitions. [2021-12-06 19:43:11,570 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 192 transitions. Word has length 29 [2021-12-06 19:43:11,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:43:11,571 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 192 transitions. [2021-12-06 19:43:11,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:11,571 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 192 transitions. [2021-12-06 19:43:11,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-06 19:43:11,571 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:43:11,571 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:43:11,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-12-06 19:43:11,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:43:11,772 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:43:11,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:43:11,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1795053594, now seen corresponding path program 2 times [2021-12-06 19:43:11,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:43:11,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1949601787] [2021-12-06 19:43:11,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:43:11,773 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:43:11,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:43:11,773 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:43:11,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-12-06 19:43:11,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:43:11,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:43:11,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 19:43:11,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:43:11,848 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 8 treesize of output 7 [2021-12-06 19:43:12,165 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:43:12,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:43:12,798 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:43:12,798 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:43:12,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1949601787] [2021-12-06 19:43:12,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1949601787] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:43:12,798 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:43:12,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-12-06 19:43:12,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205763307] [2021-12-06 19:43:12,798 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:43:12,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 19:43:12,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:43:12,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 19:43:12,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-12-06 19:43:12,799 INFO L87 Difference]: Start difference. First operand 156 states and 192 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 14 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) [2021-12-06 19:43:12,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:43:12,970 INFO L93 Difference]: Finished difference Result 158 states and 193 transitions. [2021-12-06 19:43:12,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:43:12,970 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 14 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 31 [2021-12-06 19:43:12,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:43:12,971 INFO L225 Difference]: With dead ends: 158 [2021-12-06 19:43:12,971 INFO L226 Difference]: Without dead ends: 158 [2021-12-06 19:43:12,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-12-06 19:43:12,972 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 18 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:43:12,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 129 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 29 Unchecked, 0.1s Time] [2021-12-06 19:43:12,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-12-06 19:43:12,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 156. [2021-12-06 19:43:12,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 152 states have (on average 1.256578947368421) internal successors, (191), 155 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:12,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 191 transitions. [2021-12-06 19:43:12,975 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 191 transitions. Word has length 31 [2021-12-06 19:43:12,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:43:12,975 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 191 transitions. [2021-12-06 19:43:12,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 14 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) [2021-12-06 19:43:12,976 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 191 transitions. [2021-12-06 19:43:12,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-06 19:43:12,976 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:43:12,976 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:43:12,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-12-06 19:43:13,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:43:13,177 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:43:13,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:43:13,178 INFO L85 PathProgramCache]: Analyzing trace with hash 740071271, now seen corresponding path program 2 times [2021-12-06 19:43:13,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:43:13,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [120148012] [2021-12-06 19:43:13,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:43:13,180 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:43:13,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:43:13,182 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:43:13,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-12-06 19:43:13,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:43:13,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:43:13,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 19:43:13,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:43:13,308 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 8 treesize of output 7 [2021-12-06 19:43:13,663 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 19:43:13,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:43:15,269 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 19:43:15,269 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:43:15,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [120148012] [2021-12-06 19:43:15,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [120148012] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:43:15,269 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:43:15,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-12-06 19:43:15,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975562284] [2021-12-06 19:43:15,270 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:43:15,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 19:43:15,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:43:15,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 19:43:15,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-12-06 19:43:15,270 INFO L87 Difference]: Start difference. First operand 156 states and 191 transitions. Second operand has 17 states, 16 states have (on average 3.375) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:18,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:43:18,183 INFO L93 Difference]: Finished difference Result 181 states and 225 transitions. [2021-12-06 19:43:18,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-06 19:43:18,184 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.375) internal successors, (54), 17 states have internal predecessors, (54), 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 32 [2021-12-06 19:43:18,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:43:18,185 INFO L225 Difference]: With dead ends: 181 [2021-12-06 19:43:18,185 INFO L226 Difference]: Without dead ends: 181 [2021-12-06 19:43:18,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=189, Invalid=623, Unknown=0, NotChecked=0, Total=812 [2021-12-06 19:43:18,186 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 52 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:43:18,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 178 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 43 Unchecked, 0.4s Time] [2021-12-06 19:43:18,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-12-06 19:43:18,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 175. [2021-12-06 19:43:18,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 171 states have (on average 1.2923976608187135) internal successors, (221), 174 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:18,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 221 transitions. [2021-12-06 19:43:18,189 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 221 transitions. Word has length 32 [2021-12-06 19:43:18,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:43:18,190 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 221 transitions. [2021-12-06 19:43:18,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.375) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:18,190 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 221 transitions. [2021-12-06 19:43:18,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 19:43:18,190 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:43:18,190 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:43:18,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-12-06 19:43:18,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:43:18,391 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:43:18,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:43:18,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1154994598, now seen corresponding path program 1 times [2021-12-06 19:43:18,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:43:18,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1133019983] [2021-12-06 19:43:18,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:43:18,394 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:43:18,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:43:18,397 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:43:18,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-12-06 19:43:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:18,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 19:43:18,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:43:18,492 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 8 treesize of output 7 [2021-12-06 19:43:19,212 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 19:43:19,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:43:20,721 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 19:43:20,722 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:43:20,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1133019983] [2021-12-06 19:43:20,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1133019983] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:43:20,722 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:43:20,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-12-06 19:43:20,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658142379] [2021-12-06 19:43:20,722 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:43:20,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 19:43:20,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:43:20,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 19:43:20,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2021-12-06 19:43:20,723 INFO L87 Difference]: Start difference. First operand 175 states and 221 transitions. Second operand has 17 states, 16 states have (on average 3.5) internal successors, (56), 17 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) [2021-12-06 19:43:22,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:43:22,219 INFO L93 Difference]: Finished difference Result 219 states and 276 transitions. [2021-12-06 19:43:22,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 19:43:22,220 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.5) internal successors, (56), 17 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 33 [2021-12-06 19:43:22,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:43:22,221 INFO L225 Difference]: With dead ends: 219 [2021-12-06 19:43:22,221 INFO L226 Difference]: Without dead ends: 219 [2021-12-06 19:43:22,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2021-12-06 19:43:22,222 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 32 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:43:22,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 176 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 35 Unchecked, 0.2s Time] [2021-12-06 19:43:22,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-12-06 19:43:22,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 205. [2021-12-06 19:43:22,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 201 states have (on average 1.2985074626865671) internal successors, (261), 204 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:22,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 261 transitions. [2021-12-06 19:43:22,226 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 261 transitions. Word has length 33 [2021-12-06 19:43:22,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:43:22,226 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 261 transitions. [2021-12-06 19:43:22,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.5) internal successors, (56), 17 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) [2021-12-06 19:43:22,226 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 261 transitions. [2021-12-06 19:43:22,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 19:43:22,226 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:43:22,226 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:43:22,233 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-12-06 19:43:22,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:43:22,427 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:43:22,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:43:22,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1467372908, now seen corresponding path program 3 times [2021-12-06 19:43:22,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:43:22,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1599521385] [2021-12-06 19:43:22,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:43:22,431 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:43:22,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:43:22,433 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:43:22,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-12-06 19:43:22,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-06 19:43:22,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:43:22,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 19:43:22,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:43:22,640 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 8 treesize of output 7 [2021-12-06 19:43:23,064 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:43:23,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:43:23,891 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:43:23,891 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:43:23,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1599521385] [2021-12-06 19:43:23,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1599521385] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:43:23,892 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:43:23,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-12-06 19:43:23,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42048413] [2021-12-06 19:43:23,892 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:43:23,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-06 19:43:23,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:43:23,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-06 19:43:23,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2021-12-06 19:43:23,893 INFO L87 Difference]: Start difference. First operand 205 states and 261 transitions. Second operand has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:24,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:43:24,513 INFO L93 Difference]: Finished difference Result 243 states and 305 transitions. [2021-12-06 19:43:24,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 19:43:24,514 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 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 33 [2021-12-06 19:43:24,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:43:24,515 INFO L225 Difference]: With dead ends: 243 [2021-12-06 19:43:24,515 INFO L226 Difference]: Without dead ends: 241 [2021-12-06 19:43:24,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2021-12-06 19:43:24,516 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 53 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:43:24,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 209 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 164 Invalid, 0 Unknown, 39 Unchecked, 0.4s Time] [2021-12-06 19:43:24,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-12-06 19:43:24,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 234. [2021-12-06 19:43:24,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 230 states have (on average 1.2869565217391303) internal successors, (296), 233 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:24,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 296 transitions. [2021-12-06 19:43:24,520 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 296 transitions. Word has length 33 [2021-12-06 19:43:24,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:43:24,520 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 296 transitions. [2021-12-06 19:43:24,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:24,520 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 296 transitions. [2021-12-06 19:43:24,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 19:43:24,521 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:43:24,521 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1] [2021-12-06 19:43:24,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-12-06 19:43:24,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:43:24,722 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:43:24,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:43:24,723 INFO L85 PathProgramCache]: Analyzing trace with hash -563143139, now seen corresponding path program 3 times [2021-12-06 19:43:24,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:43:24,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587722599] [2021-12-06 19:43:24,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:43:24,725 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:43:24,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:43:24,727 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:43:24,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-12-06 19:43:24,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-12-06 19:43:24,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:43:24,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 19:43:24,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:43:24,959 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 8 treesize of output 7 [2021-12-06 19:43:25,404 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:43:25,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:43:27,294 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:43:27,294 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:43:27,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587722599] [2021-12-06 19:43:27,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587722599] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:43:27,294 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:43:27,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-12-06 19:43:27,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609770035] [2021-12-06 19:43:27,294 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:43:27,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-06 19:43:27,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:43:27,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-06 19:43:27,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2021-12-06 19:43:27,296 INFO L87 Difference]: Start difference. First operand 234 states and 296 transitions. Second operand has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 22 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:39,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:43:39,340 INFO L93 Difference]: Finished difference Result 2230 states and 2870 transitions. [2021-12-06 19:43:39,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-06 19:43:39,342 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 22 states have internal predecessors, (66), 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 34 [2021-12-06 19:43:39,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:43:39,350 INFO L225 Difference]: With dead ends: 2230 [2021-12-06 19:43:39,350 INFO L226 Difference]: Without dead ends: 2230 [2021-12-06 19:43:39,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=522, Invalid=1200, Unknown=0, NotChecked=0, Total=1722 [2021-12-06 19:43:39,351 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 1371 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1371 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:43:39,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1371 Valid, 905 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 865 Invalid, 0 Unknown, 90 Unchecked, 3.5s Time] [2021-12-06 19:43:39,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2021-12-06 19:43:39,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 266. [2021-12-06 19:43:39,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 262 states have (on average 1.282442748091603) internal successors, (336), 265 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:39,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 336 transitions. [2021-12-06 19:43:39,366 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 336 transitions. Word has length 34 [2021-12-06 19:43:39,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:43:39,366 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 336 transitions. [2021-12-06 19:43:39,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 22 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:39,366 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 336 transitions. [2021-12-06 19:43:39,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 19:43:39,367 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:43:39,367 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:43:39,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2021-12-06 19:43:39,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:43:39,567 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:43:39,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:43:39,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1553594099, now seen corresponding path program 1 times [2021-12-06 19:43:39,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:43:39,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [255057154] [2021-12-06 19:43:39,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:43:39,568 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:43:39,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:43:39,569 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:43:39,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-12-06 19:43:39,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:39,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 19:43:39,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:43:39,788 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 19:43:39,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:43:39,788 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:43:39,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [255057154] [2021-12-06 19:43:39,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [255057154] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:43:39,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:43:39,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:43:39,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252086728] [2021-12-06 19:43:39,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:43:39,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:43:39,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:43:39,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:43:39,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:43:39,789 INFO L87 Difference]: Start difference. First operand 266 states and 336 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:39,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:43:39,794 INFO L93 Difference]: Finished difference Result 265 states and 335 transitions. [2021-12-06 19:43:39,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:43:39,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 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 34 [2021-12-06 19:43:39,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:43:39,795 INFO L225 Difference]: With dead ends: 265 [2021-12-06 19:43:39,795 INFO L226 Difference]: Without dead ends: 256 [2021-12-06 19:43:39,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:43:39,796 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 4 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:43:39,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 41 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 11 Unchecked, 0.0s Time] [2021-12-06 19:43:39,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-12-06 19:43:39,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2021-12-06 19:43:39,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 253 states have (on average 1.2608695652173914) internal successors, (319), 255 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:39,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 319 transitions. [2021-12-06 19:43:39,800 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 319 transitions. Word has length 34 [2021-12-06 19:43:39,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:43:39,800 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 319 transitions. [2021-12-06 19:43:39,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:39,801 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 319 transitions. [2021-12-06 19:43:39,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 19:43:39,801 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:43:39,801 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:43:39,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-12-06 19:43:40,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:43:40,001 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:43:40,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:43:40,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1445094157, now seen corresponding path program 1 times [2021-12-06 19:43:40,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:43:40,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [893171683] [2021-12-06 19:43:40,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:43:40,002 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:43:40,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:43:40,003 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:43:40,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-12-06 19:43:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:40,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-06 19:43:40,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:43:40,076 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 8 treesize of output 7 [2021-12-06 19:43:40,536 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:43:40,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:43:43,131 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:43:43,131 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:43:43,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [893171683] [2021-12-06 19:43:43,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [893171683] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:43:43,132 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:43:43,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2021-12-06 19:43:43,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122547778] [2021-12-06 19:43:43,132 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:43:43,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-06 19:43:43,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:43:43,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-06 19:43:43,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2021-12-06 19:43:43,133 INFO L87 Difference]: Start difference. First operand 256 states and 319 transitions. Second operand has 22 states, 22 states have (on average 3.0) internal successors, (66), 22 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:44,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:43:44,266 INFO L93 Difference]: Finished difference Result 271 states and 333 transitions. [2021-12-06 19:43:44,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 19:43:44,268 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0) internal successors, (66), 22 states have internal predecessors, (66), 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 34 [2021-12-06 19:43:44,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:43:44,270 INFO L225 Difference]: With dead ends: 271 [2021-12-06 19:43:44,270 INFO L226 Difference]: Without dead ends: 261 [2021-12-06 19:43:44,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2021-12-06 19:43:44,270 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 59 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 19:43:44,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 180 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 172 Invalid, 0 Unknown, 51 Unchecked, 0.9s Time] [2021-12-06 19:43:44,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-12-06 19:43:44,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 256. [2021-12-06 19:43:44,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 253 states have (on average 1.256916996047431) internal successors, (318), 255 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:44,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 318 transitions. [2021-12-06 19:43:44,274 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 318 transitions. Word has length 34 [2021-12-06 19:43:44,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:43:44,275 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 318 transitions. [2021-12-06 19:43:44,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0) internal successors, (66), 22 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:44,275 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 318 transitions. [2021-12-06 19:43:44,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-06 19:43:44,275 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:43:44,275 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:43:44,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-12-06 19:43:44,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:43:44,476 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:43:44,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:43:44,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1786478211, now seen corresponding path program 1 times [2021-12-06 19:43:44,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:43:44,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [366161472] [2021-12-06 19:43:44,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:43:44,479 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:43:44,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:43:44,482 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:43:44,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-12-06 19:43:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:44,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 19:43:44,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:43:44,753 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 19:43:44,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:43:45,124 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 19:43:45,124 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:43:45,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [366161472] [2021-12-06 19:43:45,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [366161472] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:43:45,124 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:43:45,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-12-06 19:43:45,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288015778] [2021-12-06 19:43:45,125 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:43:45,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 19:43:45,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:43:45,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 19:43:45,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:43:45,125 INFO L87 Difference]: Start difference. First operand 256 states and 318 transitions. Second operand has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 19 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:45,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:43:45,834 INFO L93 Difference]: Finished difference Result 253 states and 313 transitions. [2021-12-06 19:43:45,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 19:43:45,835 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 19 states have internal predecessors, (54), 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 35 [2021-12-06 19:43:45,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:43:45,836 INFO L225 Difference]: With dead ends: 253 [2021-12-06 19:43:45,836 INFO L226 Difference]: Without dead ends: 245 [2021-12-06 19:43:45,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2021-12-06 19:43:45,837 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 91 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:43:45,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 117 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 19:43:45,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-12-06 19:43:45,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2021-12-06 19:43:45,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 242 states have (on average 1.2603305785123966) internal successors, (305), 244 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:45,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 305 transitions. [2021-12-06 19:43:45,842 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 305 transitions. Word has length 35 [2021-12-06 19:43:45,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:43:45,843 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 305 transitions. [2021-12-06 19:43:45,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 19 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:45,843 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 305 transitions. [2021-12-06 19:43:45,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-06 19:43:45,843 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:43:45,844 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:43:45,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2021-12-06 19:43:46,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:43:46,045 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:43:46,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:43:46,046 INFO L85 PathProgramCache]: Analyzing trace with hash 787071440, now seen corresponding path program 2 times [2021-12-06 19:43:46,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:43:46,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906424355] [2021-12-06 19:43:46,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:43:46,048 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:43:46,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:43:46,050 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:43:46,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-12-06 19:43:46,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:43:46,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:43:46,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-06 19:43:46,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:43:46,190 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 8 treesize of output 7 [2021-12-06 19:43:46,785 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 19:43:46,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:43:48,804 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 19:43:48,804 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:43:48,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906424355] [2021-12-06 19:43:48,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906424355] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:43:48,805 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:43:48,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-12-06 19:43:48,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832216476] [2021-12-06 19:43:48,805 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:43:48,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 19:43:48,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:43:48,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 19:43:48,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-12-06 19:43:48,806 INFO L87 Difference]: Start difference. First operand 245 states and 305 transitions. Second operand has 18 states, 17 states have (on average 3.411764705882353) internal successors, (58), 18 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:53,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:43:53,125 INFO L93 Difference]: Finished difference Result 373 states and 451 transitions. [2021-12-06 19:43:53,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-06 19:43:53,126 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.411764705882353) internal successors, (58), 18 states have internal predecessors, (58), 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 38 [2021-12-06 19:43:53,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:43:53,128 INFO L225 Difference]: With dead ends: 373 [2021-12-06 19:43:53,128 INFO L226 Difference]: Without dead ends: 373 [2021-12-06 19:43:53,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=308, Invalid=882, Unknown=0, NotChecked=0, Total=1190 [2021-12-06 19:43:53,128 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 321 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:43:53,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 143 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 265 Invalid, 0 Unknown, 31 Unchecked, 1.6s Time] [2021-12-06 19:43:53,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2021-12-06 19:43:53,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 353. [2021-12-06 19:43:53,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 350 states have (on average 1.237142857142857) internal successors, (433), 352 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) [2021-12-06 19:43:53,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 433 transitions. [2021-12-06 19:43:53,133 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 433 transitions. Word has length 38 [2021-12-06 19:43:53,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:43:53,134 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 433 transitions. [2021-12-06 19:43:53,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.411764705882353) internal successors, (58), 18 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:53,134 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 433 transitions. [2021-12-06 19:43:53,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-06 19:43:53,134 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:43:53,134 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:43:53,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2021-12-06 19:43:53,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:43:53,335 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:43:53,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:43:53,335 INFO L85 PathProgramCache]: Analyzing trace with hash -710345958, now seen corresponding path program 2 times [2021-12-06 19:43:53,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:43:53,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [501813380] [2021-12-06 19:43:53,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:43:53,335 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:43:53,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:43:53,336 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:43:53,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-12-06 19:43:53,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:43:53,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:43:53,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 19:43:53,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:43:53,643 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 19:43:53,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:43:54,062 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 19:43:54,062 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:43:54,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [501813380] [2021-12-06 19:43:54,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [501813380] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:43:54,062 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:43:54,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 20 [2021-12-06 19:43:54,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888089902] [2021-12-06 19:43:54,062 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:43:54,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 19:43:54,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:43:54,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 19:43:54,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2021-12-06 19:43:54,065 INFO L87 Difference]: Start difference. First operand 353 states and 433 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 20 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:55,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:43:55,766 INFO L93 Difference]: Finished difference Result 417 states and 497 transitions. [2021-12-06 19:43:55,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 19:43:55,767 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 20 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-12-06 19:43:55,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:43:55,768 INFO L225 Difference]: With dead ends: 417 [2021-12-06 19:43:55,768 INFO L226 Difference]: Without dead ends: 368 [2021-12-06 19:43:55,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=348, Invalid=1212, Unknown=0, NotChecked=0, Total=1560 [2021-12-06 19:43:55,769 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 341 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 19:43:55,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 151 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 19:43:55,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2021-12-06 19:43:55,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 329. [2021-12-06 19:43:55,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 326 states have (on average 1.2361963190184049) internal successors, (403), 328 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:55,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 403 transitions. [2021-12-06 19:43:55,774 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 403 transitions. Word has length 39 [2021-12-06 19:43:55,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:43:55,775 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 403 transitions. [2021-12-06 19:43:55,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 20 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:43:55,775 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 403 transitions. [2021-12-06 19:43:55,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-06 19:43:55,775 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:43:55,776 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:43:55,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2021-12-06 19:43:55,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:43:55,977 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:43:55,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:43:55,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1388873166, now seen corresponding path program 1 times [2021-12-06 19:43:55,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:43:55,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5504148] [2021-12-06 19:43:55,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:43:55,980 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:43:55,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:43:55,982 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:43:55,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-12-06 19:43:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:56,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-06 19:43:56,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:43:56,089 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 8 treesize of output 7 [2021-12-06 19:43:56,695 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 19:43:56,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:43:58,220 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 19:43:58,220 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:43:58,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5504148] [2021-12-06 19:43:58,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5504148] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:43:58,221 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:43:58,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2021-12-06 19:43:58,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819708189] [2021-12-06 19:43:58,221 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:43:58,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 19:43:58,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:43:58,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 19:43:58,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:43:58,222 INFO L87 Difference]: Start difference. First operand 329 states and 403 transitions. Second operand has 19 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:44:00,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:44:00,479 INFO L93 Difference]: Finished difference Result 403 states and 485 transitions. [2021-12-06 19:44:00,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 19:44:00,480 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 19 states have internal predecessors, (64), 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 41 [2021-12-06 19:44:00,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:44:00,482 INFO L225 Difference]: With dead ends: 403 [2021-12-06 19:44:00,482 INFO L226 Difference]: Without dead ends: 393 [2021-12-06 19:44:00,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=298, Invalid=824, Unknown=0, NotChecked=0, Total=1122 [2021-12-06 19:44:00,483 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 235 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 19:44:00,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 106 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 152 Invalid, 0 Unknown, 66 Unchecked, 0.7s Time] [2021-12-06 19:44:00,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-12-06 19:44:00,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 389. [2021-12-06 19:44:00,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 386 states have (on average 1.217616580310881) internal successors, (470), 388 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:44:00,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 470 transitions. [2021-12-06 19:44:00,490 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 470 transitions. Word has length 41 [2021-12-06 19:44:00,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:44:00,490 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 470 transitions. [2021-12-06 19:44:00,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:44:00,491 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 470 transitions. [2021-12-06 19:44:00,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-06 19:44:00,491 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:44:00,491 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:44:00,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-12-06 19:44:00,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:44:00,692 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:44:00,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:44:00,694 INFO L85 PathProgramCache]: Analyzing trace with hash -990897512, now seen corresponding path program 3 times [2021-12-06 19:44:00,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:44:00,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478983210] [2021-12-06 19:44:00,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:44:00,695 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:44:00,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:44:00,698 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:44:00,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-12-06 19:44:00,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-06 19:44:00,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:44:00,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 19:44:00,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:44:00,771 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 8 treesize of output 7 [2021-12-06 19:44:01,154 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-06 19:44:01,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:44:02,187 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-06 19:44:02,187 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:44:02,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478983210] [2021-12-06 19:44:02,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1478983210] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:44:02,187 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:44:02,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2021-12-06 19:44:02,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043700069] [2021-12-06 19:44:02,187 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:44:02,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 19:44:02,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:44:02,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 19:44:02,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:44:02,188 INFO L87 Difference]: Start difference. First operand 389 states and 470 transitions. Second operand has 13 states, 12 states have (on average 4.166666666666667) internal successors, (50), 13 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) [2021-12-06 19:44:02,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:44:02,810 INFO L93 Difference]: Finished difference Result 410 states and 493 transitions. [2021-12-06 19:44:02,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 19:44:02,811 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.166666666666667) internal successors, (50), 13 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 44 [2021-12-06 19:44:02,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:44:02,813 INFO L225 Difference]: With dead ends: 410 [2021-12-06 19:44:02,813 INFO L226 Difference]: Without dead ends: 410 [2021-12-06 19:44:02,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-12-06 19:44:02,813 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:44:02,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 91 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 21 Unchecked, 0.1s Time] [2021-12-06 19:44:02,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-12-06 19:44:02,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 380. [2021-12-06 19:44:02,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 377 states have (on average 1.2015915119363396) internal successors, (453), 379 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:44:02,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 453 transitions. [2021-12-06 19:44:02,818 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 453 transitions. Word has length 44 [2021-12-06 19:44:02,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:44:02,818 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 453 transitions. [2021-12-06 19:44:02,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.166666666666667) internal successors, (50), 13 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) [2021-12-06 19:44:02,818 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 453 transitions. [2021-12-06 19:44:02,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 19:44:02,819 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:44:02,819 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:44:02,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-12-06 19:44:03,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:44:03,020 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:44:03,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:44:03,021 INFO L85 PathProgramCache]: Analyzing trace with hash -653051813, now seen corresponding path program 3 times [2021-12-06 19:44:03,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:44:03,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583838155] [2021-12-06 19:44:03,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:44:03,023 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:44:03,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:44:03,025 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:44:03,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-12-06 19:44:03,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-06 19:44:03,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:44:03,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-06 19:44:03,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:44:03,196 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 8 treesize of output 7 [2021-12-06 19:44:03,825 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-06 19:44:03,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:44:06,002 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-06 19:44:06,002 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:44:06,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583838155] [2021-12-06 19:44:06,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583838155] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:44:06,002 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:44:06,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-12-06 19:44:06,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131555362] [2021-12-06 19:44:06,002 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:44:06,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 19:44:06,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:44:06,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 19:44:06,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:44:06,003 INFO L87 Difference]: Start difference. First operand 380 states and 453 transitions. Second operand has 19 states, 18 states have (on average 2.888888888888889) internal successors, (52), 19 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) [2021-12-06 19:44:11,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:44:11,239 INFO L93 Difference]: Finished difference Result 473 states and 561 transitions. [2021-12-06 19:44:11,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 19:44:11,241 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.888888888888889) internal successors, (52), 19 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 45 [2021-12-06 19:44:11,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:44:11,242 INFO L225 Difference]: With dead ends: 473 [2021-12-06 19:44:11,242 INFO L226 Difference]: Without dead ends: 473 [2021-12-06 19:44:11,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2021-12-06 19:44:11,243 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 339 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:44:11,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 140 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 300 Invalid, 0 Unknown, 51 Unchecked, 1.6s Time] [2021-12-06 19:44:11,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2021-12-06 19:44:11,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 349. [2021-12-06 19:44:11,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 346 states have (on average 1.2023121387283238) internal successors, (416), 348 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:44:11,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 416 transitions. [2021-12-06 19:44:11,248 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 416 transitions. Word has length 45 [2021-12-06 19:44:11,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:44:11,248 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 416 transitions. [2021-12-06 19:44:11,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.888888888888889) internal successors, (52), 19 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) [2021-12-06 19:44:11,249 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 416 transitions. [2021-12-06 19:44:11,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-06 19:44:11,249 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:44:11,249 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:44:11,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2021-12-06 19:44:11,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:44:11,450 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:44:11,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:44:11,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1128392693, now seen corresponding path program 2 times [2021-12-06 19:44:11,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:44:11,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [255071558] [2021-12-06 19:44:11,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:44:11,453 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:44:11,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:44:11,455 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:44:11,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-12-06 19:44:11,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:44:11,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:44:11,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-06 19:44:11,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:44:11,619 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 8 treesize of output 7 [2021-12-06 19:44:12,067 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 19:44:12,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:44:15,233 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:44:15,233 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:44:15,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [255071558] [2021-12-06 19:44:15,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [255071558] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:44:15,234 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:44:15,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2021-12-06 19:44:15,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103960456] [2021-12-06 19:44:15,234 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:44:15,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 19:44:15,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:44:15,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 19:44:15,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2021-12-06 19:44:15,235 INFO L87 Difference]: Start difference. First operand 349 states and 416 transitions. Second operand has 25 states, 25 states have (on average 3.56) internal successors, (89), 25 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:44:17,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:44:17,284 INFO L93 Difference]: Finished difference Result 374 states and 441 transitions. [2021-12-06 19:44:17,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 19:44:17,286 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.56) internal successors, (89), 25 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-12-06 19:44:17,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:44:17,287 INFO L225 Difference]: With dead ends: 374 [2021-12-06 19:44:17,287 INFO L226 Difference]: Without dead ends: 355 [2021-12-06 19:44:17,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=133, Invalid=737, Unknown=0, NotChecked=0, Total=870 [2021-12-06 19:44:17,288 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 68 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:44:17,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 281 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 304 Invalid, 0 Unknown, 77 Unchecked, 1.3s Time] [2021-12-06 19:44:17,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2021-12-06 19:44:17,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 337. [2021-12-06 19:44:17,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 334 states have (on average 1.2005988023952097) internal successors, (401), 336 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:44:17,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 401 transitions. [2021-12-06 19:44:17,292 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 401 transitions. Word has length 47 [2021-12-06 19:44:17,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:44:17,292 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 401 transitions. [2021-12-06 19:44:17,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.56) internal successors, (89), 25 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:44:17,292 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 401 transitions. [2021-12-06 19:44:17,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-06 19:44:17,293 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:44:17,293 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:44:17,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2021-12-06 19:44:17,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:44:17,494 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:44:17,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:44:17,495 INFO L85 PathProgramCache]: Analyzing trace with hash -263973151, now seen corresponding path program 1 times [2021-12-06 19:44:17,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:44:17,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1059966653] [2021-12-06 19:44:17,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:44:17,497 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:44:17,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:44:17,499 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:44:17,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-12-06 19:44:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:17,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 19:44:17,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:44:18,039 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 28 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 19:44:18,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:44:18,957 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 24 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 19:44:18,957 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:44:18,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1059966653] [2021-12-06 19:44:18,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1059966653] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:44:18,958 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:44:18,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2021-12-06 19:44:18,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521852967] [2021-12-06 19:44:18,958 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:44:18,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 19:44:18,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:44:18,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 19:44:18,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2021-12-06 19:44:18,959 INFO L87 Difference]: Start difference. First operand 337 states and 401 transitions. Second operand has 25 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:44:20,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:44:20,349 INFO L93 Difference]: Finished difference Result 358 states and 421 transitions. [2021-12-06 19:44:20,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 19:44:20,350 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 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 50 [2021-12-06 19:44:20,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:44:20,351 INFO L225 Difference]: With dead ends: 358 [2021-12-06 19:44:20,351 INFO L226 Difference]: Without dead ends: 331 [2021-12-06 19:44:20,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=238, Invalid=952, Unknown=0, NotChecked=0, Total=1190 [2021-12-06 19:44:20,352 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 187 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:44:20,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 222 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 19:44:20,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-12-06 19:44:20,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2021-12-06 19:44:20,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 328 states have (on average 1.201219512195122) internal successors, (394), 330 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:44:20,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 394 transitions. [2021-12-06 19:44:20,356 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 394 transitions. Word has length 50 [2021-12-06 19:44:20,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:44:20,356 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 394 transitions. [2021-12-06 19:44:20,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:44:20,356 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 394 transitions. [2021-12-06 19:44:20,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-06 19:44:20,357 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:44:20,357 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:44:20,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2021-12-06 19:44:20,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:44:20,558 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:44:20,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:44:20,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1579950574, now seen corresponding path program 3 times [2021-12-06 19:44:20,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:44:20,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1947282395] [2021-12-06 19:44:20,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:44:20,561 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:44:20,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:44:20,563 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:44:20,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-12-06 19:44:20,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-06 19:44:20,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:44:20,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 19:44:20,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:44:20,664 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 8 treesize of output 7 [2021-12-06 19:44:21,541 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-12-06 19:44:21,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:44:21,541 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:44:21,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1947282395] [2021-12-06 19:44:21,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1947282395] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:44:21,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:44:21,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:44:21,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765899935] [2021-12-06 19:44:21,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:44:21,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 19:44:21,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:44:21,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 19:44:21,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:44:21,545 INFO L87 Difference]: Start difference. First operand 331 states and 394 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 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) [2021-12-06 19:44:21,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:44:21,640 INFO L93 Difference]: Finished difference Result 340 states and 404 transitions. [2021-12-06 19:44:21,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:44:21,641 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 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 51 [2021-12-06 19:44:21,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:44:21,642 INFO L225 Difference]: With dead ends: 340 [2021-12-06 19:44:21,642 INFO L226 Difference]: Without dead ends: 340 [2021-12-06 19:44:21,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:44:21,643 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:44:21,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 45 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 19 Unchecked, 0.0s Time] [2021-12-06 19:44:21,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-12-06 19:44:21,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 309. [2021-12-06 19:44:21,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 306 states have (on average 1.1928104575163399) internal successors, (365), 308 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:44:21,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 365 transitions. [2021-12-06 19:44:21,647 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 365 transitions. Word has length 51 [2021-12-06 19:44:21,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:44:21,647 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 365 transitions. [2021-12-06 19:44:21,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 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) [2021-12-06 19:44:21,647 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 365 transitions. [2021-12-06 19:44:21,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-06 19:44:21,647 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:44:21,647 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:44:21,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2021-12-06 19:44:21,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:44:21,849 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:44:21,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:44:21,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1607939878, now seen corresponding path program 4 times [2021-12-06 19:44:21,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:44:21,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1866021196] [2021-12-06 19:44:21,851 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 19:44:21,852 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:44:21,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:44:21,854 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:44:21,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-12-06 19:44:22,106 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 19:44:22,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:44:22,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-06 19:44:22,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:44:22,125 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 8 treesize of output 7 [2021-12-06 19:44:22,905 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 23 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:44:22,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:44:28,011 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:44:28,011 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:44:28,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1866021196] [2021-12-06 19:44:28,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1866021196] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:44:28,011 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:44:28,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 32 [2021-12-06 19:44:28,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141577682] [2021-12-06 19:44:28,012 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:44:28,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-06 19:44:28,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:44:28,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-06 19:44:28,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=845, Unknown=0, NotChecked=0, Total=992 [2021-12-06 19:44:28,012 INFO L87 Difference]: Start difference. First operand 309 states and 365 transitions. Second operand has 32 states, 32 states have (on average 3.125) internal successors, (100), 32 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:44:29,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:44:29,095 INFO L93 Difference]: Finished difference Result 367 states and 434 transitions. [2021-12-06 19:44:29,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-06 19:44:29,097 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.125) internal successors, (100), 32 states have internal predecessors, (100), 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 51 [2021-12-06 19:44:29,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:44:29,098 INFO L225 Difference]: With dead ends: 367 [2021-12-06 19:44:29,098 INFO L226 Difference]: Without dead ends: 365 [2021-12-06 19:44:29,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=182, Invalid=1008, Unknown=0, NotChecked=0, Total=1190 [2021-12-06 19:44:29,099 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 86 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:44:29,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 349 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 168 Invalid, 0 Unknown, 39 Unchecked, 0.6s Time] [2021-12-06 19:44:29,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-12-06 19:44:29,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 355. [2021-12-06 19:44:29,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 352 states have (on average 1.1988636363636365) internal successors, (422), 354 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:44:29,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 422 transitions. [2021-12-06 19:44:29,103 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 422 transitions. Word has length 51 [2021-12-06 19:44:29,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:44:29,103 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 422 transitions. [2021-12-06 19:44:29,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.125) internal successors, (100), 32 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:44:29,104 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 422 transitions. [2021-12-06 19:44:29,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-06 19:44:29,104 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:44:29,104 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:44:29,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2021-12-06 19:44:29,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:44:29,305 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:44:29,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:44:29,306 INFO L85 PathProgramCache]: Analyzing trace with hash 737382308, now seen corresponding path program 2 times [2021-12-06 19:44:29,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:44:29,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381522128] [2021-12-06 19:44:29,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:44:29,308 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:44:29,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:44:29,311 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:44:29,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-12-06 19:44:29,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:44:29,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:44:29,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-06 19:44:29,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:44:29,530 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 8 treesize of output 7 [2021-12-06 19:44:30,412 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 19:44:30,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:44:32,952 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 1 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 19:44:32,952 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:44:32,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381522128] [2021-12-06 19:44:32,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [381522128] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:44:32,952 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:44:32,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2021-12-06 19:44:32,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559767296] [2021-12-06 19:44:32,953 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:44:32,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 19:44:32,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:44:32,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 19:44:32,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2021-12-06 19:44:32,954 INFO L87 Difference]: Start difference. First operand 355 states and 422 transitions. Second operand has 25 states, 24 states have (on average 3.4166666666666665) internal successors, (82), 25 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:44:42,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:44:42,202 INFO L93 Difference]: Finished difference Result 479 states and 562 transitions. [2021-12-06 19:44:42,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-12-06 19:44:42,203 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.4166666666666665) internal successors, (82), 25 states have internal predecessors, (82), 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 54 [2021-12-06 19:44:42,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:44:42,205 INFO L225 Difference]: With dead ends: 479 [2021-12-06 19:44:42,205 INFO L226 Difference]: Without dead ends: 479 [2021-12-06 19:44:42,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 928 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=773, Invalid=2307, Unknown=0, NotChecked=0, Total=3080 [2021-12-06 19:44:42,206 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 734 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 113 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:44:42,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [734 Valid, 257 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 428 Invalid, 0 Unknown, 113 Unchecked, 2.1s Time] [2021-12-06 19:44:42,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2021-12-06 19:44:42,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 437. [2021-12-06 19:44:42,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 435 states have (on average 1.186206896551724) internal successors, (516), 436 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:44:42,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 516 transitions. [2021-12-06 19:44:42,211 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 516 transitions. Word has length 54 [2021-12-06 19:44:42,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:44:42,211 INFO L470 AbstractCegarLoop]: Abstraction has 437 states and 516 transitions. [2021-12-06 19:44:42,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.4166666666666665) internal successors, (82), 25 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:44:42,212 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 516 transitions. [2021-12-06 19:44:42,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-06 19:44:42,212 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:44:42,212 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:44:42,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2021-12-06 19:44:42,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:44:42,413 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:44:42,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:44:42,415 INFO L85 PathProgramCache]: Analyzing trace with hash -862510979, now seen corresponding path program 3 times [2021-12-06 19:44:42,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:44:42,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576071754] [2021-12-06 19:44:42,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:44:42,416 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:44:42,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:44:42,419 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:44:42,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-12-06 19:44:42,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-06 19:44:42,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:44:42,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-06 19:44:42,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:44:42,923 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 8 treesize of output 7 [2021-12-06 19:44:43,821 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 5 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:44:43,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:44:45,577 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 5 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:44:45,577 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:44:45,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576071754] [2021-12-06 19:44:45,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [576071754] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:44:45,578 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:44:45,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-12-06 19:44:45,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667475524] [2021-12-06 19:44:45,578 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:44:45,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-06 19:44:45,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:44:45,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-06 19:44:45,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2021-12-06 19:44:45,579 INFO L87 Difference]: Start difference. First operand 437 states and 516 transitions. Second operand has 32 states, 32 states have (on average 3.46875) internal successors, (111), 32 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:44:46,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:44:46,571 INFO L93 Difference]: Finished difference Result 564 states and 666 transitions. [2021-12-06 19:44:46,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-06 19:44:46,573 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.46875) internal successors, (111), 32 states have internal predecessors, (111), 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 57 [2021-12-06 19:44:46,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:44:46,575 INFO L225 Difference]: With dead ends: 564 [2021-12-06 19:44:46,575 INFO L226 Difference]: Without dead ends: 561 [2021-12-06 19:44:46,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=204, Invalid=1056, Unknown=0, NotChecked=0, Total=1260 [2021-12-06 19:44:46,575 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 81 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 19:44:46,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 324 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 278 Invalid, 0 Unknown, 49 Unchecked, 0.7s Time] [2021-12-06 19:44:46,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-12-06 19:44:46,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 548. [2021-12-06 19:44:46,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 546 states have (on average 1.195970695970696) internal successors, (653), 547 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:44:46,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 653 transitions. [2021-12-06 19:44:46,581 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 653 transitions. Word has length 57 [2021-12-06 19:44:46,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:44:46,581 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 653 transitions. [2021-12-06 19:44:46,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.46875) internal successors, (111), 32 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:44:46,581 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 653 transitions. [2021-12-06 19:44:46,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-06 19:44:46,582 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:44:46,582 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:44:46,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2021-12-06 19:44:46,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:44:46,783 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:44:46,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:44:46,783 INFO L85 PathProgramCache]: Analyzing trace with hash 23826031, now seen corresponding path program 4 times [2021-12-06 19:44:46,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:44:46,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [650765262] [2021-12-06 19:44:46,784 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 19:44:46,784 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:44:46,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:44:46,785 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:44:46,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-12-06 19:44:47,056 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 19:44:47,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:44:47,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-06 19:44:47,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:44:47,074 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 8 treesize of output 7 [2021-12-06 19:44:47,918 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 23 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:44:47,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:44:53,625 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:44:53,625 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:44:53,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [650765262] [2021-12-06 19:44:53,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [650765262] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:44:53,625 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:44:53,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 32 [2021-12-06 19:44:53,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379303830] [2021-12-06 19:44:53,626 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:44:53,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-06 19:44:53,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:44:53,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-06 19:44:53,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=845, Unknown=0, NotChecked=0, Total=992 [2021-12-06 19:44:53,627 INFO L87 Difference]: Start difference. First operand 548 states and 653 transitions. Second operand has 32 states, 32 states have (on average 3.5) internal successors, (112), 32 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:44:59,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:44:59,176 INFO L93 Difference]: Finished difference Result 655 states and 780 transitions. [2021-12-06 19:44:59,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-06 19:44:59,178 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.5) internal successors, (112), 32 states have internal predecessors, (112), 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 57 [2021-12-06 19:44:59,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:44:59,180 INFO L225 Difference]: With dead ends: 655 [2021-12-06 19:44:59,181 INFO L226 Difference]: Without dead ends: 653 [2021-12-06 19:44:59,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=209, Invalid=1197, Unknown=0, NotChecked=0, Total=1406 [2021-12-06 19:44:59,181 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 128 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 128 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:44:59,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 348 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 401 Invalid, 0 Unknown, 128 Unchecked, 4.0s Time] [2021-12-06 19:44:59,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2021-12-06 19:44:59,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 627. [2021-12-06 19:44:59,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 625 states have (on average 1.2048) internal successors, (753), 626 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:44:59,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 753 transitions. [2021-12-06 19:44:59,188 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 753 transitions. Word has length 57 [2021-12-06 19:44:59,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:44:59,188 INFO L470 AbstractCegarLoop]: Abstraction has 627 states and 753 transitions. [2021-12-06 19:44:59,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.5) internal successors, (112), 32 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:44:59,189 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 753 transitions. [2021-12-06 19:44:59,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-06 19:44:59,189 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:44:59,189 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:44:59,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2021-12-06 19:44:59,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:44:59,391 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:44:59,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:44:59,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1061335357, now seen corresponding path program 5 times [2021-12-06 19:44:59,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:44:59,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [191286139] [2021-12-06 19:44:59,394 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 19:44:59,395 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:44:59,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:44:59,397 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:44:59,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-12-06 19:44:59,725 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-12-06 19:44:59,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:44:59,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-06 19:44:59,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:44:59,748 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 8 treesize of output 7 [2021-12-06 19:45:00,585 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 23 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:45:00,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:45:05,204 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:45:05,205 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:45:05,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [191286139] [2021-12-06 19:45:05,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [191286139] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:45:05,205 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:45:05,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 32 [2021-12-06 19:45:05,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948820926] [2021-12-06 19:45:05,205 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:45:05,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-06 19:45:05,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:45:05,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-06 19:45:05,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=832, Unknown=0, NotChecked=0, Total=992 [2021-12-06 19:45:05,206 INFO L87 Difference]: Start difference. First operand 627 states and 753 transitions. Second operand has 32 states, 32 states have (on average 3.5) internal successors, (112), 32 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:45:12,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:45:12,679 INFO L93 Difference]: Finished difference Result 685 states and 816 transitions. [2021-12-06 19:45:12,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-06 19:45:12,681 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.5) internal successors, (112), 32 states have internal predecessors, (112), 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 57 [2021-12-06 19:45:12,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:45:12,683 INFO L225 Difference]: With dead ends: 685 [2021-12-06 19:45:12,683 INFO L226 Difference]: Without dead ends: 683 [2021-12-06 19:45:12,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=343, Invalid=1637, Unknown=0, NotChecked=0, Total=1980 [2021-12-06 19:45:12,684 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 171 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:45:12,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 423 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 430 Invalid, 0 Unknown, 109 Unchecked, 3.0s Time] [2021-12-06 19:45:12,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2021-12-06 19:45:12,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 644. [2021-12-06 19:45:12,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 642 states have (on average 1.1993769470404985) internal successors, (770), 643 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:45:12,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 770 transitions. [2021-12-06 19:45:12,691 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 770 transitions. Word has length 57 [2021-12-06 19:45:12,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:45:12,691 INFO L470 AbstractCegarLoop]: Abstraction has 644 states and 770 transitions. [2021-12-06 19:45:12,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.5) internal successors, (112), 32 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:45:12,691 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 770 transitions. [2021-12-06 19:45:12,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-06 19:45:12,692 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:45:12,692 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:45:12,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2021-12-06 19:45:12,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:45:12,893 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:45:12,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:45:12,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1712545760, now seen corresponding path program 5 times [2021-12-06 19:45:12,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:45:12,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1347651192] [2021-12-06 19:45:12,896 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 19:45:12,896 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:45:12,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:45:12,899 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:45:12,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-12-06 19:45:13,581 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-12-06 19:45:13,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:45:13,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-06 19:45:13,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:45:13,615 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 8 treesize of output 7 [2021-12-06 19:45:14,580 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-06 19:45:14,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:45:19,155 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-06 19:45:19,156 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:45:19,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1347651192] [2021-12-06 19:45:19,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1347651192] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:45:19,156 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:45:19,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2021-12-06 19:45:19,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625036699] [2021-12-06 19:45:19,156 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:45:19,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-06 19:45:19,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:45:19,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-06 19:45:19,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=506, Unknown=0, NotChecked=0, Total=650 [2021-12-06 19:45:19,157 INFO L87 Difference]: Start difference. First operand 644 states and 770 transitions. Second operand has 26 states, 25 states have (on average 3.04) internal successors, (76), 26 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:45:26,740 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:45:45,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:45:45,256 INFO L93 Difference]: Finished difference Result 933 states and 1123 transitions. [2021-12-06 19:45:45,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-12-06 19:45:45,259 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.04) internal successors, (76), 26 states have internal predecessors, (76), 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 59 [2021-12-06 19:45:45,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:45:45,262 INFO L225 Difference]: With dead ends: 933 [2021-12-06 19:45:45,262 INFO L226 Difference]: Without dead ends: 933 [2021-12-06 19:45:45,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1450 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=1189, Invalid=3503, Unknown=0, NotChecked=0, Total=4692 [2021-12-06 19:45:45,263 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 700 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 158 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2021-12-06 19:45:45,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [700 Valid, 383 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 837 Invalid, 0 Unknown, 158 Unchecked, 9.8s Time] [2021-12-06 19:45:45,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2021-12-06 19:45:45,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 804. [2021-12-06 19:45:45,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 802 states have (on average 1.2119700748129676) internal successors, (972), 803 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:45:45,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 972 transitions. [2021-12-06 19:45:45,272 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 972 transitions. Word has length 59 [2021-12-06 19:45:45,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:45:45,272 INFO L470 AbstractCegarLoop]: Abstraction has 804 states and 972 transitions. [2021-12-06 19:45:45,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.04) internal successors, (76), 26 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:45:45,272 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 972 transitions. [2021-12-06 19:45:45,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-06 19:45:45,273 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:45:45,273 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:45:45,284 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2021-12-06 19:45:45,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:45:45,475 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:45:45,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:45:45,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1063550536, now seen corresponding path program 4 times [2021-12-06 19:45:45,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:45:45,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35175189] [2021-12-06 19:45:45,477 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 19:45:45,478 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:45:45,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:45:45,480 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:45:45,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-12-06 19:45:45,605 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 19:45:45,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:45:45,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 19:45:45,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:45:45,977 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 49 proven. 50 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 19:45:45,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:45:46,744 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 56 proven. 43 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 19:45:46,744 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:45:46,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35175189] [2021-12-06 19:45:46,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35175189] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:45:46,744 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:45:46,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 26 [2021-12-06 19:45:46,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293646945] [2021-12-06 19:45:46,745 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:45:46,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-06 19:45:46,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:45:46,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-06 19:45:46,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2021-12-06 19:45:46,745 INFO L87 Difference]: Start difference. First operand 804 states and 972 transitions. Second operand has 26 states, 26 states have (on average 3.230769230769231) internal successors, (84), 26 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:45:49,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:45:49,983 INFO L93 Difference]: Finished difference Result 847 states and 1005 transitions. [2021-12-06 19:45:49,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-06 19:45:49,984 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.230769230769231) internal successors, (84), 26 states have internal predecessors, (84), 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 59 [2021-12-06 19:45:49,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:45:49,986 INFO L225 Difference]: With dead ends: 847 [2021-12-06 19:45:49,986 INFO L226 Difference]: Without dead ends: 777 [2021-12-06 19:45:49,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=564, Invalid=2088, Unknown=0, NotChecked=0, Total=2652 [2021-12-06 19:45:49,988 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 454 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:45:49,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [454 Valid, 267 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 19:45:49,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2021-12-06 19:45:49,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 738. [2021-12-06 19:45:49,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 736 states have (on average 1.201086956521739) internal successors, (884), 737 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:45:49,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 884 transitions. [2021-12-06 19:45:49,995 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 884 transitions. Word has length 59 [2021-12-06 19:45:49,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:45:49,995 INFO L470 AbstractCegarLoop]: Abstraction has 738 states and 884 transitions. [2021-12-06 19:45:49,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.230769230769231) internal successors, (84), 26 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:45:49,995 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 884 transitions. [2021-12-06 19:45:49,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-06 19:45:49,996 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:45:49,996 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 1, 1, 1, 1, 1] [2021-12-06 19:45:50,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (47)] Ended with exit code 0 [2021-12-06 19:45:50,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:45:50,197 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:45:50,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:45:50,198 INFO L85 PathProgramCache]: Analyzing trace with hash 58542645, now seen corresponding path program 4 times [2021-12-06 19:45:50,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:45:50,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [252756188] [2021-12-06 19:45:50,200 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 19:45:50,200 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:45:50,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:45:50,202 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:45:50,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-12-06 19:45:50,342 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 19:45:50,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:45:50,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 19:45:50,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:45:50,361 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 8 treesize of output 7 [2021-12-06 19:45:51,593 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:45:51,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:46:01,807 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:46:01,807 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:46:01,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [252756188] [2021-12-06 19:46:01,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [252756188] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:46:01,807 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:46:01,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 45 [2021-12-06 19:46:01,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633155462] [2021-12-06 19:46:01,808 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:46:01,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-12-06 19:46:01,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:46:01,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-12-06 19:46:01,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=545, Invalid=1525, Unknown=0, NotChecked=0, Total=2070 [2021-12-06 19:46:01,809 INFO L87 Difference]: Start difference. First operand 738 states and 884 transitions. Second operand has 46 states, 45 states have (on average 2.888888888888889) internal successors, (130), 46 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:46:16,761 WARN L227 SmtUtils]: Spent 10.54s on a formula simplification that was a NOOP. DAG size: 171 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 19:46:18,925 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:46:21,845 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:46:23,848 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:46:32,733 WARN L227 SmtUtils]: Spent 8.37s on a formula simplification that was a NOOP. DAG size: 168 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 19:46:50,278 WARN L227 SmtUtils]: Spent 16.89s on a formula simplification. DAG size of input: 163 DAG size of output: 163 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 19:46:53,007 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:46:54,481 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:46:56,484 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:46:58,487 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:47:05,916 WARN L227 SmtUtils]: Spent 6.85s on a formula simplification that was a NOOP. DAG size: 157 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 19:47:19,329 WARN L227 SmtUtils]: Spent 12.68s on a formula simplification. DAG size of input: 152 DAG size of output: 152 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 19:47:22,095 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:47:24,098 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:47:26,125 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:47:33,210 WARN L227 SmtUtils]: Spent 6.48s on a formula simplification that was a NOOP. DAG size: 146 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 19:47:45,504 WARN L227 SmtUtils]: Spent 11.10s on a formula simplification. DAG size of input: 141 DAG size of output: 141 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 19:47:48,403 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:47:50,407 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:47:52,443 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:47:58,281 WARN L227 SmtUtils]: Spent 5.23s on a formula simplification that was a NOOP. DAG size: 136 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 19:48:08,946 WARN L227 SmtUtils]: Spent 9.83s on a formula simplification. DAG size of input: 131 DAG size of output: 131 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 19:48:22,272 WARN L227 SmtUtils]: Spent 7.08s on a formula simplification. DAG size of input: 120 DAG size of output: 120 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 19:48:32,882 WARN L227 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 109 DAG size of output: 109 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 19:49:04,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:49:04,160 INFO L93 Difference]: Finished difference Result 13282 states and 15922 transitions. [2021-12-06 19:49:04,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-12-06 19:49:04,162 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.888888888888889) internal successors, (130), 46 states have internal predecessors, (130), 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 66 [2021-12-06 19:49:04,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:49:04,203 INFO L225 Difference]: With dead ends: 13282 [2021-12-06 19:49:04,203 INFO L226 Difference]: Without dead ends: 13282 [2021-12-06 19:49:04,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2441 ImplicationChecksByTransitivity, 149.6s TimeCoverageRelationStatistics Valid=2223, Invalid=5259, Unknown=0, NotChecked=0, Total=7482 [2021-12-06 19:49:04,205 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 4891 mSDsluCounter, 2476 mSDsCounter, 0 mSdLazyCounter, 3279 mSolverCounterSat, 159 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4891 SdHoareTripleChecker+Valid, 2603 SdHoareTripleChecker+Invalid, 3482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 3279 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 39.8s IncrementalHoareTripleChecker+Time [2021-12-06 19:49:04,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4891 Valid, 2603 Invalid, 3482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 3279 Invalid, 12 Unknown, 32 Unchecked, 39.8s Time] [2021-12-06 19:49:04,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13282 states. [2021-12-06 19:49:04,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13282 to 802. [2021-12-06 19:49:04,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 800 states have (on average 1.205) internal successors, (964), 801 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:49:04,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 964 transitions. [2021-12-06 19:49:04,263 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 964 transitions. Word has length 66 [2021-12-06 19:49:04,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:49:04,263 INFO L470 AbstractCegarLoop]: Abstraction has 802 states and 964 transitions. [2021-12-06 19:49:04,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.888888888888889) internal successors, (130), 46 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:49:04,263 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 964 transitions. [2021-12-06 19:49:04,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 19:49:04,264 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:49:04,264 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:49:04,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2021-12-06 19:49:04,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:49:04,465 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:49:04,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:49:04,466 INFO L85 PathProgramCache]: Analyzing trace with hash -273652577, now seen corresponding path program 5 times [2021-12-06 19:49:04,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:49:04,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [172801480] [2021-12-06 19:49:04,468 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 19:49:04,469 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:49:04,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:49:04,471 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:49:04,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-12-06 19:49:04,801 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-12-06 19:49:04,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:49:04,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 19:49:04,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:49:05,145 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 31 proven. 104 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-06 19:49:05,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:49:06,094 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 31 proven. 104 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-06 19:49:06,094 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:49:06,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [172801480] [2021-12-06 19:49:06,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [172801480] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:49:06,095 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:49:06,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2021-12-06 19:49:06,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927826176] [2021-12-06 19:49:06,095 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:49:06,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-06 19:49:06,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:49:06,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-06 19:49:06,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2021-12-06 19:49:06,096 INFO L87 Difference]: Start difference. First operand 802 states and 964 transitions. Second operand has 26 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 26 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:49:08,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:49:08,010 INFO L93 Difference]: Finished difference Result 917 states and 1093 transitions. [2021-12-06 19:49:08,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 19:49:08,011 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 26 states have internal predecessors, (92), 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 68 [2021-12-06 19:49:08,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:49:08,014 INFO L225 Difference]: With dead ends: 917 [2021-12-06 19:49:08,014 INFO L226 Difference]: Without dead ends: 917 [2021-12-06 19:49:08,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=271, Invalid=851, Unknown=0, NotChecked=0, Total=1122 [2021-12-06 19:49:08,015 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 330 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:49:08,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 544 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-06 19:49:08,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2021-12-06 19:49:08,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 888. [2021-12-06 19:49:08,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 888 states, 886 states have (on average 1.2042889390519187) internal successors, (1067), 887 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:49:08,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1067 transitions. [2021-12-06 19:49:08,024 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1067 transitions. Word has length 68 [2021-12-06 19:49:08,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:49:08,024 INFO L470 AbstractCegarLoop]: Abstraction has 888 states and 1067 transitions. [2021-12-06 19:49:08,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 26 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:49:08,024 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1067 transitions. [2021-12-06 19:49:08,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-06 19:49:08,025 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:49:08,025 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:49:08,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (49)] Ended with exit code 0 [2021-12-06 19:49:08,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:49:08,226 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:49:08,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:49:08,227 INFO L85 PathProgramCache]: Analyzing trace with hash -279300761, now seen corresponding path program 6 times [2021-12-06 19:49:08,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:49:08,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [735988888] [2021-12-06 19:49:08,229 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 19:49:08,229 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:49:08,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:49:08,232 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:49:08,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-12-06 19:49:08,550 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-12-06 19:49:08,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:49:08,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-06 19:49:08,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:49:08,579 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 8 treesize of output 7 [2021-12-06 19:49:09,695 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-06 19:49:09,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:49:14,088 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-06 19:49:14,088 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:49:14,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [735988888] [2021-12-06 19:49:14,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [735988888] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:49:14,088 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:49:14,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 24 [2021-12-06 19:49:14,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092080189] [2021-12-06 19:49:14,088 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:49:14,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 19:49:14,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:49:14,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 19:49:14,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2021-12-06 19:49:14,089 INFO L87 Difference]: Start difference. First operand 888 states and 1067 transitions. Second operand has 25 states, 24 states have (on average 4.083333333333333) internal successors, (98), 25 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:49:40,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:49:40,773 INFO L93 Difference]: Finished difference Result 1071 states and 1285 transitions. [2021-12-06 19:49:40,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-12-06 19:49:40,775 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 4.083333333333333) internal successors, (98), 25 states have internal predecessors, (98), 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 70 [2021-12-06 19:49:40,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:49:40,779 INFO L225 Difference]: With dead ends: 1071 [2021-12-06 19:49:40,779 INFO L226 Difference]: Without dead ends: 1071 [2021-12-06 19:49:40,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1923 ImplicationChecksByTransitivity, 22.4s TimeCoverageRelationStatistics Valid=1503, Invalid=4349, Unknown=0, NotChecked=0, Total=5852 [2021-12-06 19:49:40,780 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 1028 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 1202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 196 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-12-06 19:49:40,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1028 Valid, 402 Invalid, 1202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 863 Invalid, 0 Unknown, 196 Unchecked, 6.7s Time] [2021-12-06 19:49:40,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2021-12-06 19:49:40,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1013. [2021-12-06 19:49:40,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 1011 states have (on average 1.208704253214639) internal successors, (1222), 1012 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:49:40,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1222 transitions. [2021-12-06 19:49:40,790 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1222 transitions. Word has length 70 [2021-12-06 19:49:40,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:49:40,790 INFO L470 AbstractCegarLoop]: Abstraction has 1013 states and 1222 transitions. [2021-12-06 19:49:40,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 4.083333333333333) internal successors, (98), 25 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:49:40,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1222 transitions. [2021-12-06 19:49:40,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-06 19:49:40,791 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:49:40,791 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:49:40,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (50)] Ended with exit code 0 [2021-12-06 19:49:40,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:49:40,993 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:49:40,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:49:40,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1428738709, now seen corresponding path program 6 times [2021-12-06 19:49:40,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:49:40,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417603931] [2021-12-06 19:49:40,995 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 19:49:40,996 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:49:40,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:49:40,998 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:49:41,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-12-06 19:49:41,278 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-12-06 19:49:41,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:49:41,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-06 19:49:41,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:49:41,307 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 8 treesize of output 7 [2021-12-06 19:49:42,492 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 19 treesize of output 15 [2021-12-06 19:49:42,510 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 98 proven. 87 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-06 19:49:42,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:49:46,221 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 95 proven. 100 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 19:49:46,222 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:49:46,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417603931] [2021-12-06 19:49:46,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417603931] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:49:46,222 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:49:46,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 34 [2021-12-06 19:49:46,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305530208] [2021-12-06 19:49:46,222 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:49:46,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-06 19:49:46,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:49:46,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-06 19:49:46,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=974, Unknown=0, NotChecked=0, Total=1122 [2021-12-06 19:49:46,223 INFO L87 Difference]: Start difference. First operand 1013 states and 1222 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:49:57,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:49:57,755 INFO L93 Difference]: Finished difference Result 1172 states and 1374 transitions. [2021-12-06 19:49:57,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-12-06 19:49:57,757 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 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 73 [2021-12-06 19:49:57,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:49:57,760 INFO L225 Difference]: With dead ends: 1172 [2021-12-06 19:49:57,760 INFO L226 Difference]: Without dead ends: 1172 [2021-12-06 19:49:57,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1446 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=1093, Invalid=5069, Unknown=0, NotChecked=0, Total=6162 [2021-12-06 19:49:57,761 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 1063 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 1558 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:49:57,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1063 Valid, 630 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1558 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-12-06 19:49:57,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2021-12-06 19:49:57,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 916. [2021-12-06 19:49:57,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 914 states have (on average 1.200218818380744) internal successors, (1097), 915 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:49:57,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1097 transitions. [2021-12-06 19:49:57,771 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1097 transitions. Word has length 73 [2021-12-06 19:49:57,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:49:57,771 INFO L470 AbstractCegarLoop]: Abstraction has 916 states and 1097 transitions. [2021-12-06 19:49:57,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:49:57,771 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1097 transitions. [2021-12-06 19:49:57,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-06 19:49:57,772 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:49:57,772 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:49:57,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (51)] Ended with exit code 0 [2021-12-06 19:49:57,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:49:57,973 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:49:57,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:49:57,974 INFO L85 PathProgramCache]: Analyzing trace with hash 348270194, now seen corresponding path program 7 times [2021-12-06 19:49:57,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:49:57,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [469127028] [2021-12-06 19:49:57,975 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 19:49:57,976 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:49:57,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:49:57,978 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:49:57,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-12-06 19:49:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:58,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 19:49:58,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:49:58,168 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 8 treesize of output 7 [2021-12-06 19:49:59,617 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-06 19:49:59,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:50:04,139 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 1 proven. 173 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-06 19:50:04,140 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:50:04,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [469127028] [2021-12-06 19:50:04,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [469127028] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:50:04,140 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:50:04,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 32 [2021-12-06 19:50:04,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079380654] [2021-12-06 19:50:04,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:50:04,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-06 19:50:04,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:50:04,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-06 19:50:04,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=840, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 19:50:04,141 INFO L87 Difference]: Start difference. First operand 916 states and 1097 transitions. Second operand has 33 states, 32 states have (on average 3.5) internal successors, (112), 33 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:50:08,910 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:50:11,176 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:50:33,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:50:33,651 INFO L93 Difference]: Finished difference Result 2081 states and 2478 transitions. [2021-12-06 19:50:33,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-12-06 19:50:33,652 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 3.5) internal successors, (112), 33 states have internal predecessors, (112), 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 77 [2021-12-06 19:50:33,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:50:33,655 INFO L225 Difference]: With dead ends: 2081 [2021-12-06 19:50:33,655 INFO L226 Difference]: Without dead ends: 2081 [2021-12-06 19:50:33,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3730 ImplicationChecksByTransitivity, 23.8s TimeCoverageRelationStatistics Valid=1994, Invalid=7906, Unknown=0, NotChecked=0, Total=9900 [2021-12-06 19:50:33,656 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 1453 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1453 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 1655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 422 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2021-12-06 19:50:33,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1453 Valid, 682 Invalid, 1655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1066 Invalid, 0 Unknown, 422 Unchecked, 8.7s Time] [2021-12-06 19:50:33,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2081 states. [2021-12-06 19:50:33,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2081 to 1470. [2021-12-06 19:50:33,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1468 states have (on average 1.2220708446866484) internal successors, (1794), 1469 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:50:33,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 1794 transitions. [2021-12-06 19:50:33,676 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 1794 transitions. Word has length 77 [2021-12-06 19:50:33,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:50:33,677 INFO L470 AbstractCegarLoop]: Abstraction has 1470 states and 1794 transitions. [2021-12-06 19:50:33,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 3.5) internal successors, (112), 33 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:50:33,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 1794 transitions. [2021-12-06 19:50:33,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-06 19:50:33,677 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:50:33,677 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 6, 6, 6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:50:33,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (52)] Ended with exit code 0 [2021-12-06 19:50:33,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:50:33,878 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:50:33,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:50:33,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1304502903, now seen corresponding path program 2 times [2021-12-06 19:50:33,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:50:33,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [682033996] [2021-12-06 19:50:33,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:50:33,882 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:50:33,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:50:33,884 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:50:33,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-12-06 19:50:34,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:50:34,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:50:34,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 19:50:34,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:50:34,104 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 8 treesize of output 7 [2021-12-06 19:50:34,902 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2021-12-06 19:50:34,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:50:36,067 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 25 proven. 24 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2021-12-06 19:50:36,068 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:50:36,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [682033996] [2021-12-06 19:50:36,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [682033996] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:50:36,068 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:50:36,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-12-06 19:50:36,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086031725] [2021-12-06 19:50:36,068 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:50:36,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 19:50:36,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:50:36,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 19:50:36,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-12-06 19:50:36,069 INFO L87 Difference]: Start difference. First operand 1470 states and 1794 transitions. Second operand has 14 states, 13 states have (on average 5.076923076923077) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:50:36,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:50:36,217 INFO L93 Difference]: Finished difference Result 1470 states and 1788 transitions. [2021-12-06 19:50:36,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:50:36,217 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.076923076923077) internal successors, (66), 14 states have internal predecessors, (66), 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 81 [2021-12-06 19:50:36,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:50:36,219 INFO L225 Difference]: With dead ends: 1470 [2021-12-06 19:50:36,219 INFO L226 Difference]: Without dead ends: 1274 [2021-12-06 19:50:36,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-12-06 19:50:36,219 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 11 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:50:36,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 88 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 22 Unchecked, 0.1s Time] [2021-12-06 19:50:36,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2021-12-06 19:50:36,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 976. [2021-12-06 19:50:36,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 974 states have (on average 1.1724845995893223) internal successors, (1142), 975 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:50:36,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1142 transitions. [2021-12-06 19:50:36,231 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1142 transitions. Word has length 81 [2021-12-06 19:50:36,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:50:36,231 INFO L470 AbstractCegarLoop]: Abstraction has 976 states and 1142 transitions. [2021-12-06 19:50:36,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.076923076923077) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:50:36,232 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1142 transitions. [2021-12-06 19:50:36,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-06 19:50:36,232 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:50:36,232 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 7, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:50:36,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (53)] Ended with exit code 0 [2021-12-06 19:50:36,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:50:36,433 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:50:36,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:50:36,434 INFO L85 PathProgramCache]: Analyzing trace with hash -198049911, now seen corresponding path program 3 times [2021-12-06 19:50:36,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:50:36,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1340858960] [2021-12-06 19:50:36,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:50:36,436 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:50:36,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:50:36,439 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:50:36,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-12-06 19:50:36,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-06 19:50:36,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:50:36,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-06 19:50:36,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:50:36,676 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 8 treesize of output 7 [2021-12-06 19:50:37,773 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-12-06 19:50:37,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:50:43,742 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 1 proven. 118 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-12-06 19:50:43,742 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:50:43,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1340858960] [2021-12-06 19:50:43,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1340858960] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:50:43,742 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:50:43,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 23 [2021-12-06 19:50:43,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442934940] [2021-12-06 19:50:43,742 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:50:43,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-06 19:50:43,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:50:43,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-06 19:50:43,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2021-12-06 19:50:43,743 INFO L87 Difference]: Start difference. First operand 976 states and 1142 transitions. Second operand has 24 states, 23 states have (on average 3.652173913043478) internal successors, (84), 24 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:50:54,178 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:51:00,812 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:51:03,401 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:51:09,769 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:51:14,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:51:14,056 INFO L93 Difference]: Finished difference Result 1181 states and 1361 transitions. [2021-12-06 19:51:14,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-12-06 19:51:14,057 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.652173913043478) internal successors, (84), 24 states have internal predecessors, (84), 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 83 [2021-12-06 19:51:14,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:51:14,059 INFO L225 Difference]: With dead ends: 1181 [2021-12-06 19:51:14,059 INFO L226 Difference]: Without dead ends: 1181 [2021-12-06 19:51:14,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 142 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1557 ImplicationChecksByTransitivity, 21.5s TimeCoverageRelationStatistics Valid=1163, Invalid=3667, Unknown=0, NotChecked=0, Total=4830 [2021-12-06 19:51:14,059 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 1094 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 100 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:51:14,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1094 Valid, 202 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 436 Invalid, 3 Unknown, 46 Unchecked, 11.2s Time] [2021-12-06 19:51:14,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2021-12-06 19:51:14,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 436. [2021-12-06 19:51:14,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 434 states have (on average 1.1612903225806452) internal successors, (504), 435 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:51:14,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 504 transitions. [2021-12-06 19:51:14,065 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 504 transitions. Word has length 83 [2021-12-06 19:51:14,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:51:14,065 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 504 transitions. [2021-12-06 19:51:14,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.652173913043478) internal successors, (84), 24 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:51:14,065 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 504 transitions. [2021-12-06 19:51:14,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-06 19:51:14,066 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:51:14,066 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 6, 6, 6, 6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:51:14,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-12-06 19:51:14,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:51:14,267 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:51:14,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:51:14,268 INFO L85 PathProgramCache]: Analyzing trace with hash 98760736, now seen corresponding path program 8 times [2021-12-06 19:51:14,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:51:14,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [786136112] [2021-12-06 19:51:14,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:51:14,270 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:51:14,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:51:14,273 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:51:14,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-12-06 19:51:14,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:51:14,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:51:14,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-06 19:51:14,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:51:14,490 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 8 treesize of output 7 [2021-12-06 19:51:16,058 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 55 proven. 246 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-12-06 19:51:16,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:51:20,637 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 112 proven. 189 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-12-06 19:51:20,637 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:51:20,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [786136112] [2021-12-06 19:51:20,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [786136112] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:51:20,637 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:51:20,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 30 [2021-12-06 19:51:20,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917294637] [2021-12-06 19:51:20,638 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:51:20,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-06 19:51:20,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:51:20,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-06 19:51:20,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=729, Unknown=0, NotChecked=0, Total=930 [2021-12-06 19:51:20,638 INFO L87 Difference]: Start difference. First operand 436 states and 504 transitions. Second operand has 31 states, 30 states have (on average 3.8666666666666667) internal successors, (116), 31 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:51:24,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:51:24,357 INFO L93 Difference]: Finished difference Result 626 states and 728 transitions. [2021-12-06 19:51:24,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-06 19:51:24,359 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.8666666666666667) internal successors, (116), 31 states have internal predecessors, (116), 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 95 [2021-12-06 19:51:24,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:51:24,360 INFO L225 Difference]: With dead ends: 626 [2021-12-06 19:51:24,360 INFO L226 Difference]: Without dead ends: 618 [2021-12-06 19:51:24,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=619, Invalid=2243, Unknown=0, NotChecked=0, Total=2862 [2021-12-06 19:51:24,360 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 617 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 125 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:51:24,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [617 Valid, 414 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 603 Invalid, 0 Unknown, 125 Unchecked, 1.4s Time] [2021-12-06 19:51:24,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2021-12-06 19:51:24,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 567. [2021-12-06 19:51:24,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 565 states have (on average 1.184070796460177) internal successors, (669), 566 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:51:24,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 669 transitions. [2021-12-06 19:51:24,365 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 669 transitions. Word has length 95 [2021-12-06 19:51:24,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:51:24,365 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 669 transitions. [2021-12-06 19:51:24,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.8666666666666667) internal successors, (116), 31 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:51:24,365 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 669 transitions. [2021-12-06 19:51:24,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-06 19:51:24,366 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:51:24,366 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:51:24,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (55)] Ended with exit code 0 [2021-12-06 19:51:24,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:51:24,567 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:51:24,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:51:24,568 INFO L85 PathProgramCache]: Analyzing trace with hash -738366094, now seen corresponding path program 9 times [2021-12-06 19:51:24,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:51:24,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [827007984] [2021-12-06 19:51:24,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:51:24,570 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:51:24,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:51:24,573 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:51:24,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-12-06 19:51:25,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-12-06 19:51:25,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:51:25,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-06 19:51:25,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:51:25,667 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 8 treesize of output 7 [2021-12-06 19:51:27,516 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 12 proven. 368 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-06 19:51:27,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:51:30,850 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 13 proven. 367 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-06 19:51:30,851 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:51:30,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [827007984] [2021-12-06 19:51:30,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [827007984] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:51:30,851 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:51:30,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 39 [2021-12-06 19:51:30,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870143188] [2021-12-06 19:51:30,851 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:51:30,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-12-06 19:51:30,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:51:30,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-12-06 19:51:30,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=1212, Unknown=0, NotChecked=0, Total=1482 [2021-12-06 19:51:30,852 INFO L87 Difference]: Start difference. First operand 567 states and 669 transitions. Second operand has 39 states, 39 states have (on average 3.871794871794872) internal successors, (151), 39 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:51:40,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:51:40,634 INFO L93 Difference]: Finished difference Result 824 states and 968 transitions. [2021-12-06 19:51:40,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-12-06 19:51:40,635 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.871794871794872) internal successors, (151), 39 states have internal predecessors, (151), 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 97 [2021-12-06 19:51:40,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:51:40,636 INFO L225 Difference]: With dead ends: 824 [2021-12-06 19:51:40,636 INFO L226 Difference]: Without dead ends: 820 [2021-12-06 19:51:40,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 159 SyntacticMatches, 5 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1103 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=613, Invalid=3047, Unknown=0, NotChecked=0, Total=3660 [2021-12-06 19:51:40,637 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 636 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 320 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:51:40,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [636 Valid, 809 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1115 Invalid, 0 Unknown, 320 Unchecked, 5.0s Time] [2021-12-06 19:51:40,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2021-12-06 19:51:40,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 723. [2021-12-06 19:51:40,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 721 states have (on average 1.205270457697642) internal successors, (869), 722 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:51:40,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 869 transitions. [2021-12-06 19:51:40,645 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 869 transitions. Word has length 97 [2021-12-06 19:51:40,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:51:40,646 INFO L470 AbstractCegarLoop]: Abstraction has 723 states and 869 transitions. [2021-12-06 19:51:40,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.871794871794872) internal successors, (151), 39 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:51:40,646 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 869 transitions. [2021-12-06 19:51:40,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-06 19:51:40,647 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:51:40,647 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:51:40,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (56)] Ended with exit code 0 [2021-12-06 19:51:40,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:51:40,847 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:51:40,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:51:40,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1300355040, now seen corresponding path program 6 times [2021-12-06 19:51:40,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:51:40,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020581221] [2021-12-06 19:51:40,848 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 19:51:40,848 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:51:40,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:51:40,849 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:51:40,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-12-06 19:51:41,614 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-12-06 19:51:41,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:51:41,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-06 19:51:41,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:51:41,649 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 8 treesize of output 7 [2021-12-06 19:51:43,405 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 231 proven. 159 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-12-06 19:51:43,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:52:46,958 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 232 proven. 164 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-12-06 19:52:46,958 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:52:46,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020581221] [2021-12-06 19:52:46,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020581221] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:52:46,959 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:52:46,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2021-12-06 19:52:46,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538475352] [2021-12-06 19:52:46,959 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:52:46,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-12-06 19:52:46,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:52:46,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-12-06 19:52:46,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1280, Unknown=3, NotChecked=0, Total=1482 [2021-12-06 19:52:46,960 INFO L87 Difference]: Start difference. First operand 723 states and 869 transitions. Second operand has 39 states, 39 states have (on average 3.5641025641025643) internal successors, (139), 39 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:04,284 WARN L227 SmtUtils]: Spent 6.41s on a formula simplification that was a NOOP. DAG size: 65 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 19:53:06,434 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse5 (bvmul |c_ULTIMATE.start_bubbleSort_~j~0#1| (_ bv4 32)))) (let ((.cse4 (bvadd (_ bv4 32) |c_ULTIMATE.start_bubbleSort_~numbers#1.offset| .cse5))) (and (forall ((|ULTIMATE.start_bubbleSort_~j~0#1| (_ BitVec 32))) (let ((.cse3 (bvmul |ULTIMATE.start_bubbleSort_~j~0#1| (_ bv4 32)))) (let ((.cse1 (select |c_#length| |c_ULTIMATE.start_bubbleSort_~numbers#1.base|)) (.cse0 (bvadd |c_ULTIMATE.start_bubbleSort_~numbers#1.offset| .cse3))) (or (not (bvule .cse0 .cse1)) (let ((.cse2 (bvadd (_ bv4 32) |c_ULTIMATE.start_bubbleSort_~numbers#1.offset| .cse3))) (and (bvule .cse2 .cse1) (bvule .cse0 .cse2))))))) (bvule .cse4 (select |c_#length| |c_ULTIMATE.start_bubbleSort_~numbers#1.base|)) (bvule (bvadd |c_ULTIMATE.start_bubbleSort_~numbers#1.offset| .cse5) .cse4)))) is different from false [2021-12-06 19:53:06,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:53:06,492 INFO L93 Difference]: Finished difference Result 867 states and 1040 transitions. [2021-12-06 19:53:06,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-12-06 19:53:06,493 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.5641025641025643) internal successors, (139), 39 states have internal predecessors, (139), 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 99 [2021-12-06 19:53:06,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:53:06,494 INFO L225 Difference]: With dead ends: 867 [2021-12-06 19:53:06,494 INFO L226 Difference]: Without dead ends: 865 [2021-12-06 19:53:06,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 71.1s TimeCoverageRelationStatistics Valid=277, Invalid=1615, Unknown=4, NotChecked=84, Total=1980 [2021-12-06 19:53:06,495 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 106 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 373 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 19:53:06,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 527 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 222 Invalid, 0 Unknown, 373 Unchecked, 0.7s Time] [2021-12-06 19:53:06,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2021-12-06 19:53:06,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 817. [2021-12-06 19:53:06,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 815 states have (on average 1.2134969325153375) internal successors, (989), 816 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:06,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 989 transitions. [2021-12-06 19:53:06,502 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 989 transitions. Word has length 99 [2021-12-06 19:53:06,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:53:06,503 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 989 transitions. [2021-12-06 19:53:06,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.5641025641025643) internal successors, (139), 39 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:06,503 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 989 transitions. [2021-12-06 19:53:06,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-06 19:53:06,504 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:53:06,504 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 10, 6, 6, 6, 6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:53:06,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (57)] Ended with exit code 0 [2021-12-06 19:53:06,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:53:06,705 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:53:06,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:53:06,706 INFO L85 PathProgramCache]: Analyzing trace with hash 464474487, now seen corresponding path program 4 times [2021-12-06 19:53:06,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:53:06,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289478402] [2021-12-06 19:53:06,708 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 19:53:06,708 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:53:06,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:53:06,711 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:53:06,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-12-06 19:53:07,028 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 19:53:07,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:53:07,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-06 19:53:07,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:53:07,064 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 8 treesize of output 7 [2021-12-06 19:53:10,123 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 55 proven. 246 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-12-06 19:53:10,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:53:16,286 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 112 proven. 189 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-12-06 19:53:16,286 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:53:16,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289478402] [2021-12-06 19:53:16,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1289478402] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:53:16,287 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:53:16,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 30 [2021-12-06 19:53:16,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760227491] [2021-12-06 19:53:16,287 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:53:16,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-06 19:53:16,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:53:16,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-06 19:53:16,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=729, Unknown=0, NotChecked=0, Total=930 [2021-12-06 19:53:16,288 INFO L87 Difference]: Start difference. First operand 817 states and 989 transitions. Second operand has 31 states, 30 states have (on average 4.333333333333333) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:21,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:53:21,316 INFO L93 Difference]: Finished difference Result 1068 states and 1265 transitions. [2021-12-06 19:53:21,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-06 19:53:21,318 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 4.333333333333333) internal successors, (130), 31 states have internal predecessors, (130), 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 101 [2021-12-06 19:53:21,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:53:21,319 INFO L225 Difference]: With dead ends: 1068 [2021-12-06 19:53:21,319 INFO L226 Difference]: Without dead ends: 1060 [2021-12-06 19:53:21,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=619, Invalid=2243, Unknown=0, NotChecked=0, Total=2862 [2021-12-06 19:53:21,320 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 727 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-06 19:53:21,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [727 Valid, 404 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 517 Invalid, 0 Unknown, 69 Unchecked, 1.8s Time] [2021-12-06 19:53:21,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2021-12-06 19:53:21,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 828. [2021-12-06 19:53:21,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 826 states have (on average 1.1876513317191284) internal successors, (981), 827 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:21,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 981 transitions. [2021-12-06 19:53:21,327 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 981 transitions. Word has length 101 [2021-12-06 19:53:21,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:53:21,328 INFO L470 AbstractCegarLoop]: Abstraction has 828 states and 981 transitions. [2021-12-06 19:53:21,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 4.333333333333333) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:21,328 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 981 transitions. [2021-12-06 19:53:21,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-06 19:53:21,329 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:53:21,329 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 10, 6, 6, 6, 6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:53:21,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2021-12-06 19:53:21,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:53:21,530 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:53:21,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:53:21,531 INFO L85 PathProgramCache]: Analyzing trace with hash 126493481, now seen corresponding path program 5 times [2021-12-06 19:53:21,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:53:21,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565098072] [2021-12-06 19:53:21,533 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 19:53:21,534 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:53:21,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:53:21,536 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:53:21,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-12-06 19:53:22,551 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-12-06 19:53:22,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:53:22,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-06 19:53:22,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:53:22,586 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 8 treesize of output 7 [2021-12-06 19:53:25,263 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 55 proven. 246 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-12-06 19:53:25,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:53:31,143 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 112 proven. 189 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-12-06 19:53:31,143 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:53:31,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565098072] [2021-12-06 19:53:31,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565098072] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:53:31,144 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:53:31,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2021-12-06 19:53:31,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596325791] [2021-12-06 19:53:31,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:53:31,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-06 19:53:31,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:53:31,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-06 19:53:31,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=678, Unknown=0, NotChecked=0, Total=870 [2021-12-06 19:53:31,145 INFO L87 Difference]: Start difference. First operand 828 states and 981 transitions. Second operand has 30 states, 29 states have (on average 4.379310344827586) internal successors, (127), 30 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:38,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:53:38,870 INFO L93 Difference]: Finished difference Result 1348 states and 1593 transitions. [2021-12-06 19:53:38,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-12-06 19:53:38,872 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 4.379310344827586) internal successors, (127), 30 states have internal predecessors, (127), 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 101 [2021-12-06 19:53:38,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:53:38,874 INFO L225 Difference]: With dead ends: 1348 [2021-12-06 19:53:38,874 INFO L226 Difference]: Without dead ends: 1340 [2021-12-06 19:53:38,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 186 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 908 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=732, Invalid=2808, Unknown=0, NotChecked=0, Total=3540 [2021-12-06 19:53:38,875 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 555 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 149 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:53:38,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [555 Valid, 479 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 505 Invalid, 0 Unknown, 149 Unchecked, 2.0s Time] [2021-12-06 19:53:38,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2021-12-06 19:53:38,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 1147. [2021-12-06 19:53:38,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1145 states have (on average 1.2017467248908298) internal successors, (1376), 1146 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:38,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1376 transitions. [2021-12-06 19:53:38,884 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1376 transitions. Word has length 101 [2021-12-06 19:53:38,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:53:38,884 INFO L470 AbstractCegarLoop]: Abstraction has 1147 states and 1376 transitions. [2021-12-06 19:53:38,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 4.379310344827586) internal successors, (127), 30 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:38,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1376 transitions. [2021-12-06 19:53:38,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-06 19:53:38,885 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:53:38,885 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 10, 6, 6, 6, 6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:53:38,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (59)] Ended with exit code 0 [2021-12-06 19:53:39,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:53:39,086 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:53:39,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:53:39,087 INFO L85 PathProgramCache]: Analyzing trace with hash 911855479, now seen corresponding path program 6 times [2021-12-06 19:53:39,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:53:39,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323818724] [2021-12-06 19:53:39,090 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 19:53:39,090 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:53:39,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:53:39,092 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:53:39,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-12-06 19:53:39,455 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-12-06 19:53:39,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:53:39,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-06 19:53:39,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:53:39,485 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 8 treesize of output 7 [2021-12-06 19:53:49,579 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 177 proven. 85 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2021-12-06 19:53:49,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:54:00,100 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 113 proven. 149 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2021-12-06 19:54:00,100 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:54:00,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1323818724] [2021-12-06 19:54:00,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1323818724] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:54:00,100 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:54:00,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2021-12-06 19:54:00,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448928934] [2021-12-06 19:54:00,101 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:54:00,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-06 19:54:00,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:54:00,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-06 19:54:00,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2021-12-06 19:54:00,102 INFO L87 Difference]: Start difference. First operand 1147 states and 1376 transitions. Second operand has 26 states, 25 states have (on average 4.4) internal successors, (110), 26 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:54:01,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:54:01,903 INFO L93 Difference]: Finished difference Result 1755 states and 2101 transitions. [2021-12-06 19:54:01,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 19:54:01,904 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 4.4) internal successors, (110), 26 states have internal predecessors, (110), 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 101 [2021-12-06 19:54:01,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:54:01,906 INFO L225 Difference]: With dead ends: 1755 [2021-12-06 19:54:01,906 INFO L226 Difference]: Without dead ends: 1740 [2021-12-06 19:54:01,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2021-12-06 19:54:01,906 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 52 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:54:01,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 220 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 73 Unchecked, 0.2s Time] [2021-12-06 19:54:01,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1740 states. [2021-12-06 19:54:01,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1740 to 1588. [2021-12-06 19:54:01,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1588 states, 1586 states have (on average 1.219419924337957) internal successors, (1934), 1587 states have internal predecessors, (1934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:54:01,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 1934 transitions. [2021-12-06 19:54:01,920 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 1934 transitions. Word has length 101 [2021-12-06 19:54:01,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:54:01,920 INFO L470 AbstractCegarLoop]: Abstraction has 1588 states and 1934 transitions. [2021-12-06 19:54:01,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 4.4) internal successors, (110), 26 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:54:01,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 1934 transitions. [2021-12-06 19:54:01,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-06 19:54:01,921 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:54:01,922 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 11, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:54:01,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (60)] Ended with exit code 0 [2021-12-06 19:54:02,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:54:02,122 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:54:02,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:54:02,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1474769655, now seen corresponding path program 7 times [2021-12-06 19:54:02,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:54:02,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022090940] [2021-12-06 19:54:02,123 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 19:54:02,123 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:54:02,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:54:02,124 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:54:02,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-12-06 19:54:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:02,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-06 19:54:02,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:54:03,762 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 181 proven. 178 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-12-06 19:54:03,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:54:06,488 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 215 proven. 144 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-12-06 19:54:06,489 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:54:06,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022090940] [2021-12-06 19:54:06,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2022090940] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:54:06,489 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:54:06,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34 [2021-12-06 19:54:06,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171980327] [2021-12-06 19:54:06,489 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:54:06,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-06 19:54:06,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:54:06,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-06 19:54:06,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=877, Unknown=0, NotChecked=0, Total=1122 [2021-12-06 19:54:06,490 INFO L87 Difference]: Start difference. First operand 1588 states and 1934 transitions. Second operand has 34 states, 34 states have (on average 4.0) internal successors, (136), 34 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:54:15,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:54:15,305 INFO L93 Difference]: Finished difference Result 1281 states and 1519 transitions. [2021-12-06 19:54:15,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-12-06 19:54:15,307 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.0) internal successors, (136), 34 states have internal predecessors, (136), 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 103 [2021-12-06 19:54:15,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:54:15,308 INFO L225 Difference]: With dead ends: 1281 [2021-12-06 19:54:15,308 INFO L226 Difference]: Without dead ends: 1281 [2021-12-06 19:54:15,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1219 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=899, Invalid=3657, Unknown=0, NotChecked=0, Total=4556 [2021-12-06 19:54:15,310 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 926 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-12-06 19:54:15,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [926 Valid, 470 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-12-06 19:54:15,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-12-06 19:54:15,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1110. [2021-12-06 19:54:15,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 1108 states have (on average 1.1994584837545126) internal successors, (1329), 1109 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:54:15,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1329 transitions. [2021-12-06 19:54:15,322 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1329 transitions. Word has length 103 [2021-12-06 19:54:15,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:54:15,322 INFO L470 AbstractCegarLoop]: Abstraction has 1110 states and 1329 transitions. [2021-12-06 19:54:15,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.0) internal successors, (136), 34 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:54:15,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1329 transitions. [2021-12-06 19:54:15,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-06 19:54:15,323 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:54:15,323 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 12, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:54:15,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (61)] Ended with exit code 0 [2021-12-06 19:54:15,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:54:15,524 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:54:15,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:54:15,525 INFO L85 PathProgramCache]: Analyzing trace with hash 24505015, now seen corresponding path program 7 times [2021-12-06 19:54:15,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:54:15,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [270953868] [2021-12-06 19:54:15,526 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 19:54:15,526 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:54:15,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:54:15,528 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:54:15,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-12-06 19:54:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:54:15,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 34 conjunts are in the unsatisfiable core [2021-12-06 19:54:15,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:54:15,731 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 8 treesize of output 7 [2021-12-06 19:54:18,029 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 231 proven. 159 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-12-06 19:54:18,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:54:31,174 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:54:31,174 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:54:31,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [270953868] [2021-12-06 19:54:31,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [270953868] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:54:31,174 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:54:31,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 26] total 44 [2021-12-06 19:54:31,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24881893] [2021-12-06 19:54:31,175 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:54:31,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-12-06 19:54:31,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:54:31,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-12-06 19:54:31,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1693, Unknown=0, NotChecked=0, Total=1892 [2021-12-06 19:54:31,175 INFO L87 Difference]: Start difference. First operand 1110 states and 1329 transitions. Second operand has 44 states, 44 states have (on average 4.068181818181818) internal successors, (179), 44 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:54:37,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:54:37,962 INFO L93 Difference]: Finished difference Result 1503 states and 1824 transitions. [2021-12-06 19:54:37,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-12-06 19:54:37,964 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 4.068181818181818) internal successors, (179), 44 states have internal predecessors, (179), 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 105 [2021-12-06 19:54:37,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:54:37,966 INFO L225 Difference]: With dead ends: 1503 [2021-12-06 19:54:37,966 INFO L226 Difference]: Without dead ends: 1501 [2021-12-06 19:54:37,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=251, Invalid=2005, Unknown=0, NotChecked=0, Total=2256 [2021-12-06 19:54:37,966 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 110 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 168 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:54:37,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 1133 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 699 Invalid, 0 Unknown, 168 Unchecked, 5.4s Time] [2021-12-06 19:54:37,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2021-12-06 19:54:37,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 1434. [2021-12-06 19:54:37,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1434 states, 1432 states have (on average 1.225558659217877) internal successors, (1755), 1433 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:54:37,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 1755 transitions. [2021-12-06 19:54:37,977 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 1755 transitions. Word has length 105 [2021-12-06 19:54:37,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:54:37,977 INFO L470 AbstractCegarLoop]: Abstraction has 1434 states and 1755 transitions. [2021-12-06 19:54:37,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 4.068181818181818) internal successors, (179), 44 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:54:37,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 1755 transitions. [2021-12-06 19:54:37,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-06 19:54:37,981 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:54:37,981 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 12, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:54:37,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (62)] Ended with exit code 0 [2021-12-06 19:54:38,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:54:38,182 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:54:38,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:54:38,182 INFO L85 PathProgramCache]: Analyzing trace with hash -201195863, now seen corresponding path program 8 times [2021-12-06 19:54:38,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:54:38,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134998182] [2021-12-06 19:54:38,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:54:38,183 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:54:38,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:54:38,183 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:54:38,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-12-06 19:54:38,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:54:38,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:54:38,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 34 conjunts are in the unsatisfiable core [2021-12-06 19:54:38,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:54:38,362 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 8 treesize of output 7 [2021-12-06 19:54:42,078 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 13 proven. 482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:54:42,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:54:55,062 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:54:55,062 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:54:55,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2134998182] [2021-12-06 19:54:55,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2134998182] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:54:55,062 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:54:55,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2021-12-06 19:54:55,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046830941] [2021-12-06 19:54:55,062 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:54:55,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-12-06 19:54:55,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:54:55,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-12-06 19:54:55,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=2167, Unknown=0, NotChecked=0, Total=2550 [2021-12-06 19:54:55,063 INFO L87 Difference]: Start difference. First operand 1434 states and 1755 transitions. Second operand has 51 states, 51 states have (on average 4.078431372549019) internal successors, (208), 51 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:55:07,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:55:07,552 INFO L93 Difference]: Finished difference Result 2070 states and 2569 transitions. [2021-12-06 19:55:07,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-12-06 19:55:07,554 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 4.078431372549019) internal successors, (208), 51 states have internal predecessors, (208), 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 105 [2021-12-06 19:55:07,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:55:07,556 INFO L225 Difference]: With dead ends: 2070 [2021-12-06 19:55:07,556 INFO L226 Difference]: Without dead ends: 2069 [2021-12-06 19:55:07,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1152 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=609, Invalid=3423, Unknown=0, NotChecked=0, Total=4032 [2021-12-06 19:55:07,556 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 165 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 142 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:55:07,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 831 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 610 Invalid, 0 Unknown, 142 Unchecked, 6.2s Time] [2021-12-06 19:55:07,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2021-12-06 19:55:07,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1733. [2021-12-06 19:55:07,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1733 states, 1731 states have (on average 1.2368573079145002) internal successors, (2141), 1732 states have internal predecessors, (2141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:55:07,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2141 transitions. [2021-12-06 19:55:07,570 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2141 transitions. Word has length 105 [2021-12-06 19:55:07,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:55:07,571 INFO L470 AbstractCegarLoop]: Abstraction has 1733 states and 2141 transitions. [2021-12-06 19:55:07,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 4.078431372549019) internal successors, (208), 51 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:55:07,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2141 transitions. [2021-12-06 19:55:07,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-06 19:55:07,572 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:55:07,572 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 12, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:55:07,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (63)] Ended with exit code 0 [2021-12-06 19:55:07,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:55:07,773 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 19:55:07,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:55:07,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1116619913, now seen corresponding path program 9 times [2021-12-06 19:55:07,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:55:07,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177784615] [2021-12-06 19:55:07,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:55:07,777 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:55:07,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:55:07,779 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:55:07,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fed30-12b5-40df-9863-b37c2c529251/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-12-06 19:55:08,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-12-06 19:55:08,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:55:08,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-06 19:55:08,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:55:08,314 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 8 treesize of output 7 [2021-12-06 19:55:15,925 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 280 proven. 96 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-12-06 19:55:15,925 INFO L328 TraceCheckSpWp]: Computing backward predicates...