./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/java_BubbleSort-alloca-1.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_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/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_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/java_BubbleSort-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/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_7334ed65-8e5f-4566-aaba-97341a6b2c02/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 ba885d2ca843c278430bc3d4272c307ea7df8f1fbcd0da84e81382a8c1939a93 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:38:07,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:38:07,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:38:07,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:38:07,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:38:07,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:38:07,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:38:07,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:38:07,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:38:07,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:38:07,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:38:07,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:38:07,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:38:07,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:38:07,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:38:07,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:38:07,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:38:07,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:38:07,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:38:07,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:38:07,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:38:07,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:38:07,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:38:07,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:38:07,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:38:07,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:38:07,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:38:07,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:38:07,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:38:07,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:38:07,726 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:38:07,727 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:38:07,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:38:07,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:38:07,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:38:07,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:38:07,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:38:07,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:38:07,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:38:07,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:38:07,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:38:07,731 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-06 23:38:07,756 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:38:07,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:38:07,756 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:38:07,756 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:38:07,757 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:38:07,757 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:38:07,758 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:38:07,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:38:07,758 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:38:07,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:38:07,759 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 23:38:07,759 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 23:38:07,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:38:07,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 23:38:07,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:38:07,759 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 23:38:07,760 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 23:38:07,760 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 23:38:07,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:38:07,760 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 23:38:07,760 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 23:38:07,760 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:38:07,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:38:07,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:38:07,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:38:07,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:38:07,761 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:38:07,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:38:07,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:38:07,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 23:38:07,762 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:38:07,762 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_7334ed65-8e5f-4566-aaba-97341a6b2c02/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba885d2ca843c278430bc3d4272c307ea7df8f1fbcd0da84e81382a8c1939a93 [2021-12-06 23:38:07,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:38:07,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:38:07,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:38:07,979 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:38:07,979 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:38:07,980 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/array-memsafety/java_BubbleSort-alloca-1.i [2021-12-06 23:38:08,032 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/data/a8eeeb61b/ff811f9b167145378fe25d9751180a90/FLAGd21c33cf5 [2021-12-06 23:38:08,430 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:38:08,431 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/sv-benchmarks/c/array-memsafety/java_BubbleSort-alloca-1.i [2021-12-06 23:38:08,442 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/data/a8eeeb61b/ff811f9b167145378fe25d9751180a90/FLAGd21c33cf5 [2021-12-06 23:38:08,452 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/data/a8eeeb61b/ff811f9b167145378fe25d9751180a90 [2021-12-06 23:38:08,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:38:08,455 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:38:08,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:38:08,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:38:08,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:38:08,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:38:08" (1/1) ... [2021-12-06 23:38:08,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@220b64d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:38:08, skipping insertion in model container [2021-12-06 23:38:08,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:38:08" (1/1) ... [2021-12-06 23:38:08,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:38:08,489 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:38:08,701 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:38:08,710 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 23:38:08,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@25c382a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:38:08, skipping insertion in model container [2021-12-06 23:38:08,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:38:08,711 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-06 23:38:08,713 INFO L158 Benchmark]: Toolchain (without parser) took 257.47ms. Allocated memory is still 121.6MB. Free memory was 98.4MB in the beginning and 94.3MB in the end (delta: 4.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 23:38:08,713 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 75.5MB. Free memory is still 52.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:38:08,714 INFO L158 Benchmark]: CACSL2BoogieTranslator took 255.74ms. Allocated memory is still 121.6MB. Free memory was 98.0MB in the beginning and 94.6MB in the end (delta: 3.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 23:38:08,716 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 75.5MB. Free memory is still 52.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 255.74ms. Allocated memory is still 121.6MB. Free memory was 98.0MB in the beginning and 94.6MB in the end (delta: 3.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 526]: 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_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/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_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/java_BubbleSort-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/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_7334ed65-8e5f-4566-aaba-97341a6b2c02/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 ba885d2ca843c278430bc3d4272c307ea7df8f1fbcd0da84e81382a8c1939a93 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:38:10,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:38:10,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:38:10,121 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:38:10,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:38:10,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:38:10,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:38:10,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:38:10,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:38:10,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:38:10,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:38:10,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:38:10,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:38:10,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:38:10,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:38:10,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:38:10,134 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:38:10,135 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:38:10,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:38:10,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:38:10,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:38:10,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:38:10,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:38:10,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:38:10,146 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:38:10,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:38:10,147 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:38:10,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:38:10,148 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:38:10,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:38:10,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:38:10,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:38:10,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:38:10,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:38:10,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:38:10,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:38:10,152 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:38:10,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:38:10,153 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:38:10,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:38:10,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:38:10,154 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-06 23:38:10,174 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:38:10,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:38:10,175 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:38:10,175 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:38:10,175 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:38:10,176 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:38:10,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:38:10,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:38:10,177 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:38:10,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:38:10,177 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 23:38:10,177 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 23:38:10,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:38:10,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 23:38:10,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:38:10,178 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 23:38:10,178 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 23:38:10,178 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 23:38:10,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:38:10,178 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 23:38:10,179 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 23:38:10,179 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 23:38:10,179 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 23:38:10,179 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:38:10,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:38:10,179 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:38:10,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:38:10,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:38:10,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:38:10,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:38:10,180 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 23:38:10,180 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 23:38:10,180 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:38:10,180 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 23:38:10,180 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_7334ed65-8e5f-4566-aaba-97341a6b2c02/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba885d2ca843c278430bc3d4272c307ea7df8f1fbcd0da84e81382a8c1939a93 [2021-12-06 23:38:10,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:38:10,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:38:10,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:38:10,437 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:38:10,438 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:38:10,439 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/array-memsafety/java_BubbleSort-alloca-1.i [2021-12-06 23:38:10,485 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/data/4f3b7d1a5/5aba15529c384f0eb9824db166211fb9/FLAG96010f26e [2021-12-06 23:38:10,889 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:38:10,890 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/sv-benchmarks/c/array-memsafety/java_BubbleSort-alloca-1.i [2021-12-06 23:38:10,899 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/data/4f3b7d1a5/5aba15529c384f0eb9824db166211fb9/FLAG96010f26e [2021-12-06 23:38:10,909 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/data/4f3b7d1a5/5aba15529c384f0eb9824db166211fb9 [2021-12-06 23:38:10,910 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:38:10,911 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:38:10,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:38:10,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:38:10,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:38:10,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:38:10" (1/1) ... [2021-12-06 23:38:10,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@630e5538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:38:10, skipping insertion in model container [2021-12-06 23:38:10,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:38:10" (1/1) ... [2021-12-06 23:38:10,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:38:10,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:38:11,156 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:38:11,166 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-06 23:38:11,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:38:11,199 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:38:11,204 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:38:11,237 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:38:11,267 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:38:11,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:38:11 WrapperNode [2021-12-06 23:38:11,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:38:11,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:38:11,269 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:38:11,269 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:38:11,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:38:11" (1/1) ... [2021-12-06 23:38:11,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:38:11" (1/1) ... [2021-12-06 23:38:11,312 INFO L137 Inliner]: procedures = 117, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 63 [2021-12-06 23:38:11,312 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:38:11,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:38:11,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:38:11,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:38:11,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:38:11" (1/1) ... [2021-12-06 23:38:11,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:38:11" (1/1) ... [2021-12-06 23:38:11,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:38:11" (1/1) ... [2021-12-06 23:38:11,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:38:11" (1/1) ... [2021-12-06 23:38:11,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:38:11" (1/1) ... [2021-12-06 23:38:11,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:38:11" (1/1) ... [2021-12-06 23:38:11,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:38:11" (1/1) ... [2021-12-06 23:38:11,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:38:11,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:38:11,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:38:11,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:38:11,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:38:11" (1/1) ... [2021-12-06 23:38:11,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:38:11,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:38:11,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:38:11,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:38:11,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-06 23:38:11,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 23:38:11,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 23:38:11,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-06 23:38:11,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:38:11,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:38:11,478 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:38:11,479 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:38:11,730 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:38:11,736 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:38:11,736 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-06 23:38:11,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:38:11 BoogieIcfgContainer [2021-12-06 23:38:11,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:38:11,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:38:11,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:38:11,743 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:38:11,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:38:10" (1/3) ... [2021-12-06 23:38:11,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4ab985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:38:11, skipping insertion in model container [2021-12-06 23:38:11,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:38:11" (2/3) ... [2021-12-06 23:38:11,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4ab985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:38:11, skipping insertion in model container [2021-12-06 23:38:11,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:38:11" (3/3) ... [2021-12-06 23:38:11,745 INFO L111 eAbstractionObserver]: Analyzing ICFG java_BubbleSort-alloca-1.i [2021-12-06 23:38:11,751 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:38:11,751 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2021-12-06 23:38:11,783 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:38:11,788 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 23:38:11,789 INFO L340 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2021-12-06 23:38:11,803 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 23:38:11,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 23:38:11,807 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:38:11,808 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 23:38:11,808 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 23:38:11,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:38:11,812 INFO L85 PathProgramCache]: Analyzing trace with hash 889508873, now seen corresponding path program 1 times [2021-12-06 23:38:11,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:38:11,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746316020] [2021-12-06 23:38:11,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:38:11,821 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:38:11,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:38:11,822 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:38:11,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 23:38:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:38:11,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 23:38:11,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:38:11,942 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 23:38:11,952 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 23:38:11,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:38:11,953 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:38:11,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746316020] [2021-12-06 23:38:11,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [746316020] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:38:11,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:38:11,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:38:11,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426250217] [2021-12-06 23:38:11,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:38:11,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:38:11,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:38:11,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:38:11,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:38:11,980 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 23:38:12,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:38:12,081 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2021-12-06 23:38:12,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:38:12,083 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 23:38:12,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:38:12,089 INFO L225 Difference]: With dead ends: 40 [2021-12-06 23:38:12,089 INFO L226 Difference]: Without dead ends: 38 [2021-12-06 23:38:12,090 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 23:38:12,093 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 23:38:12,094 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 23:38:12,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-12-06 23:38:12,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-12-06 23:38:12,121 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 23:38:12,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2021-12-06 23:38:12,123 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 6 [2021-12-06 23:38:12,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:38:12,123 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2021-12-06 23:38:12,124 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 23:38:12,124 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2021-12-06 23:38:12,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 23:38:12,124 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:38:12,124 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 23:38:12,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 23:38:12,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:38:12,325 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 23:38:12,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:38:12,326 INFO L85 PathProgramCache]: Analyzing trace with hash 889508874, now seen corresponding path program 1 times [2021-12-06 23:38:12,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:38:12,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709792753] [2021-12-06 23:38:12,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:38:12,327 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:38:12,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:38:12,328 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:38:12,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 23:38:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:38:12,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 23:38:12,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:38:12,405 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 23:38:12,440 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 23:38:12,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:38:12,440 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:38:12,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [709792753] [2021-12-06 23:38:12,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [709792753] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:38:12,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:38:12,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:38:12,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406304804] [2021-12-06 23:38:12,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:38:12,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:38:12,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:38:12,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:38:12,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:38:12,443 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 23:38:12,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:38:12,692 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2021-12-06 23:38:12,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:38:12,693 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 23:38:12,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:38:12,694 INFO L225 Difference]: With dead ends: 77 [2021-12-06 23:38:12,694 INFO L226 Difference]: Without dead ends: 77 [2021-12-06 23:38:12,694 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 23:38:12,695 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 23:38:12,696 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 23:38:12,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-12-06 23:38:12,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 41. [2021-12-06 23:38:12,700 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 23:38:12,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2021-12-06 23:38:12,701 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 6 [2021-12-06 23:38:12,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:38:12,701 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2021-12-06 23:38:12,701 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 23:38:12,701 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2021-12-06 23:38:12,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 23:38:12,701 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:38:12,702 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 23:38:12,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 23:38:12,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:38:12,904 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 23:38:12,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:38:12,906 INFO L85 PathProgramCache]: Analyzing trace with hash 889568456, now seen corresponding path program 1 times [2021-12-06 23:38:12,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:38:12,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1926502358] [2021-12-06 23:38:12,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:38:12,909 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:38:12,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:38:12,911 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:38:12,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-06 23:38:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:38:12,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 23:38:12,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:38:13,015 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 23:38:13,061 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 23:38:13,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:38:13,061 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:38:13,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1926502358] [2021-12-06 23:38:13,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1926502358] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:38:13,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:38:13,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:38:13,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550616228] [2021-12-06 23:38:13,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:38:13,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:38:13,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:38:13,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:38:13,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:38:13,062 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 23:38:13,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:38:13,085 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2021-12-06 23:38:13,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:38:13,086 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 23:38:13,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:38:13,086 INFO L225 Difference]: With dead ends: 43 [2021-12-06 23:38:13,086 INFO L226 Difference]: Without dead ends: 43 [2021-12-06 23:38:13,087 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 23:38:13,087 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 23:38:13,088 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 23:38:13,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-12-06 23:38:13,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2021-12-06 23:38:13,091 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 23:38:13,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2021-12-06 23:38:13,092 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 6 [2021-12-06 23:38:13,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:38:13,092 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2021-12-06 23:38:13,092 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 23:38:13,092 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2021-12-06 23:38:13,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 23:38:13,092 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:38:13,092 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:38:13,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-06 23:38:13,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:38:13,294 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 23:38:13,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:38:13,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1184052082, now seen corresponding path program 1 times [2021-12-06 23:38:13,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:38:13,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1528670245] [2021-12-06 23:38:13,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:38:13,299 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:38:13,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:38:13,302 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:38:13,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-06 23:38:13,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:38:13,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 23:38:13,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:38:13,450 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 23:38:13,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:38:13,450 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:38:13,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1528670245] [2021-12-06 23:38:13,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1528670245] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:38:13,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:38:13,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:38:13,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128599384] [2021-12-06 23:38:13,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:38:13,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:38:13,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:38:13,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:38:13,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:38:13,452 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 23:38:13,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:38:13,492 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2021-12-06 23:38:13,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:38:13,493 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 23:38:13,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:38:13,493 INFO L225 Difference]: With dead ends: 44 [2021-12-06 23:38:13,494 INFO L226 Difference]: Without dead ends: 44 [2021-12-06 23:38:13,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:38:13,495 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 44 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:38:13,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 68 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:38:13,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-12-06 23:38:13,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2021-12-06 23:38:13,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 39 states have internal predecessors, (44), 0 states have call successors, (0), 0 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 23:38:13,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2021-12-06 23:38:13,500 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 9 [2021-12-06 23:38:13,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:38:13,501 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2021-12-06 23:38:13,501 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 23:38:13,501 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2021-12-06 23:38:13,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 23:38:13,501 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:38:13,502 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:38:13,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-06 23:38:13,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:38:13,703 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 23:38:13,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:38:13,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1091210163, now seen corresponding path program 1 times [2021-12-06 23:38:13,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:38:13,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [900643026] [2021-12-06 23:38:13,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:38:13,709 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:38:13,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:38:13,712 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:38:13,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-06 23:38:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:38:13,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 23:38:13,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:38:13,873 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 23:38:13,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:38:13,911 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 23:38:13,911 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:38:13,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [900643026] [2021-12-06 23:38:13,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [900643026] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:38:13,912 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:38:13,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-06 23:38:13,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671659942] [2021-12-06 23:38:13,912 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:38:13,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 23:38:13,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:38:13,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 23:38:13,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:38:13,914 INFO L87 Difference]: Start difference. First operand 40 states and 44 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 23:38:13,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:38:13,976 INFO L93 Difference]: Finished difference Result 75 states and 81 transitions. [2021-12-06 23:38:13,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:38:13,977 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 23:38:13,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:38:13,978 INFO L225 Difference]: With dead ends: 75 [2021-12-06 23:38:13,978 INFO L226 Difference]: Without dead ends: 75 [2021-12-06 23:38:13,978 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 23:38:13,979 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 71 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:38:13,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 167 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:38:13,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-12-06 23:38:13,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 46. [2021-12-06 23:38:13,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 32 states have (on average 1.5625) internal successors, (50), 45 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 23:38:13,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2021-12-06 23:38:13,984 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 10 [2021-12-06 23:38:13,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:38:13,984 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2021-12-06 23:38:13,984 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 23:38:13,984 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2021-12-06 23:38:13,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 23:38:13,985 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:38:13,985 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:38:13,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-06 23:38:14,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:38:14,186 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 23:38:14,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:38:14,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1900556789, now seen corresponding path program 1 times [2021-12-06 23:38:14,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:38:14,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [825644452] [2021-12-06 23:38:14,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:38:14,190 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:38:14,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:38:14,192 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:38:14,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-06 23:38:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:38:14,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 23:38:14,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:38:14,290 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 23:38:14,415 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 23:38:14,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:38:14,932 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 23:38:14,932 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:38:14,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [825644452] [2021-12-06 23:38:14,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [825644452] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:38:14,932 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:38:14,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-12-06 23:38:14,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043708180] [2021-12-06 23:38:14,933 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:38:14,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 23:38:14,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:38:14,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 23:38:14,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:38:14,934 INFO L87 Difference]: Start difference. First operand 46 states and 50 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 23:38:15,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:38:15,406 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2021-12-06 23:38:15,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:38:15,408 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 23:38:15,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:38:15,409 INFO L225 Difference]: With dead ends: 83 [2021-12-06 23:38:15,409 INFO L226 Difference]: Without dead ends: 83 [2021-12-06 23:38:15,409 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 23:38:15,410 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 72 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:38:15,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 189 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 37 Unchecked, 0.4s Time] [2021-12-06 23:38:15,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-12-06 23:38:15,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 54. [2021-12-06 23:38:15,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 40 states have (on average 1.5) internal successors, (60), 53 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 23:38:15,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2021-12-06 23:38:15,414 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 10 [2021-12-06 23:38:15,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:38:15,414 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2021-12-06 23:38:15,414 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 23:38:15,414 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2021-12-06 23:38:15,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 23:38:15,415 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:38:15,415 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:38:15,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-06 23:38:15,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:38:15,617 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 23:38:15,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:38:15,618 INFO L85 PathProgramCache]: Analyzing trace with hash 363893197, now seen corresponding path program 1 times [2021-12-06 23:38:15,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:38:15,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [392152288] [2021-12-06 23:38:15,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:38:15,620 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:38:15,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:38:15,623 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:38:15,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-06 23:38:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:38:15,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:38:15,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:38:17,776 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 23:38:17,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:38:17,776 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:38:17,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [392152288] [2021-12-06 23:38:17,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [392152288] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:38:17,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:38:17,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:38:17,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451030361] [2021-12-06 23:38:17,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:38:17,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:38:17,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:38:17,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:38:17,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=11, Unknown=1, NotChecked=0, Total=20 [2021-12-06 23:38:17,778 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand has 5 states, 4 states have (on average 3.25) 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 23:38:17,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:38:17,781 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2021-12-06 23:38:17,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:38:17,782 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) 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 23:38:17,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:38:17,783 INFO L225 Difference]: With dead ends: 62 [2021-12-06 23:38:17,783 INFO L226 Difference]: Without dead ends: 60 [2021-12-06 23:38:17,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 23:38:17,783 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 5 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:38:17,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 105 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 35 Unchecked, 0.0s Time] [2021-12-06 23:38:17,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-12-06 23:38:17,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2021-12-06 23:38:17,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 44 states have (on average 1.4772727272727273) internal successors, (65), 57 states have internal predecessors, (65), 0 states have call successors, (0), 0 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 23:38:17,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2021-12-06 23:38:17,787 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 13 [2021-12-06 23:38:17,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:38:17,787 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2021-12-06 23:38:17,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) 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 23:38:17,788 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2021-12-06 23:38:17,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 23:38:17,788 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:38:17,788 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:38:17,798 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-06 23:38:17,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:38:17,989 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 23:38:17,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:38:17,990 INFO L85 PathProgramCache]: Analyzing trace with hash 363893999, now seen corresponding path program 1 times [2021-12-06 23:38:17,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:38:17,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1960765096] [2021-12-06 23:38:17,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:38:17,992 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:38:17,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:38:17,994 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:38:17,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-06 23:38:18,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:38:18,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 23:38:18,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:38:18,123 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 23:38:18,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:38:18,124 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:38:18,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1960765096] [2021-12-06 23:38:18,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1960765096] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:38:18,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:38:18,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:38:18,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630472193] [2021-12-06 23:38:18,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:38:18,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:38:18,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:38:18,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:38:18,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:38:18,125 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 23:38:18,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:38:18,150 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2021-12-06 23:38:18,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:38:18,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 23:38:18,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:38:18,151 INFO L225 Difference]: With dead ends: 56 [2021-12-06 23:38:18,151 INFO L226 Difference]: Without dead ends: 48 [2021-12-06 23:38:18,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:38:18,152 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:38:18,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 106 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:38:18,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-12-06 23:38:18,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-12-06 23:38:18,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 47 states have internal predecessors, (53), 0 states have call successors, (0), 0 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 23:38:18,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2021-12-06 23:38:18,155 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 13 [2021-12-06 23:38:18,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:38:18,155 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2021-12-06 23:38:18,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 23:38:18,155 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2021-12-06 23:38:18,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 23:38:18,155 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:38:18,155 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:38:18,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-06 23:38:18,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:38:18,357 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 23:38:18,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:38:18,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1064957775, now seen corresponding path program 1 times [2021-12-06 23:38:18,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:38:18,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002347189] [2021-12-06 23:38:18,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:38:18,361 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:38:18,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:38:18,363 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:38:18,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-06 23:38:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:38:18,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:38:18,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:38:20,521 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 23:38:20,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:38:20,522 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:38:20,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002347189] [2021-12-06 23:38:20,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002347189] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:38:20,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:38:20,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:38:20,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353096346] [2021-12-06 23:38:20,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:38:20,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:38:20,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:38:20,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:38:20,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=11, Unknown=1, NotChecked=0, Total=20 [2021-12-06 23:38:20,523 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand has 5 states, 4 states have (on average 3.25) 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 23:38:20,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:38:20,574 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2021-12-06 23:38:20,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:38:20,575 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) 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 23:38:20,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:38:20,575 INFO L225 Difference]: With dead ends: 55 [2021-12-06 23:38:20,575 INFO L226 Difference]: Without dead ends: 53 [2021-12-06 23:38:20,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 23:38:20,576 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:38:20,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 97 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 32 Unchecked, 0.0s Time] [2021-12-06 23:38:20,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-12-06 23:38:20,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2021-12-06 23:38:20,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 50 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 23:38:20,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2021-12-06 23:38:20,579 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 13 [2021-12-06 23:38:20,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:38:20,580 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2021-12-06 23:38:20,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) 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 23:38:20,580 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2021-12-06 23:38:20,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 23:38:20,580 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:38:20,580 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:38:20,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-06 23:38:20,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:38:20,782 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 23:38:20,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:38:20,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1064958577, now seen corresponding path program 1 times [2021-12-06 23:38:20,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:38:20,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [7783105] [2021-12-06 23:38:20,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:38:20,785 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:38:20,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:38:20,787 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:38:20,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-06 23:38:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:38:20,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:38:20,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:38:20,883 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 23:38:20,903 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 23:38:20,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:38:20,903 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:38:20,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [7783105] [2021-12-06 23:38:20,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [7783105] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:38:20,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:38:20,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:38:20,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001402330] [2021-12-06 23:38:20,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:38:20,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:38:20,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:38:20,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:38:20,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:38:20,905 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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 23:38:21,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:38:21,027 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2021-12-06 23:38:21,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:38:21,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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 23:38:21,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:38:21,028 INFO L225 Difference]: With dead ends: 45 [2021-12-06 23:38:21,028 INFO L226 Difference]: Without dead ends: 45 [2021-12-06 23:38:21,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:38:21,029 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 44 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 25 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 23:38:21,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 25 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:38:21,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-12-06 23:38:21,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-12-06 23:38:21,032 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 23:38:21,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2021-12-06 23:38:21,033 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 13 [2021-12-06 23:38:21,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:38:21,033 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2021-12-06 23:38:21,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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 23:38:21,034 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2021-12-06 23:38:21,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 23:38:21,034 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:38:21,034 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:38:21,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-12-06 23:38:21,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:38:21,236 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 23:38:21,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:38:21,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1064958578, now seen corresponding path program 1 times [2021-12-06 23:38:21,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:38:21,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1027554555] [2021-12-06 23:38:21,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:38:21,237 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:38:21,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:38:21,239 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:38:21,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-06 23:38:21,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:38:21,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 23:38:21,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:38:21,303 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 23:38:21,502 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 23:38:21,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:38:21,904 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 23:38:21,904 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:38:21,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1027554555] [2021-12-06 23:38:21,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1027554555] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 23:38:21,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:38:21,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2021-12-06 23:38:21,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728881958] [2021-12-06 23:38:21,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:38:21,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:38:21,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:38:21,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:38:21,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:38:21,906 INFO L87 Difference]: Start difference. First operand 45 states and 51 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 23:38:22,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:38:22,369 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2021-12-06 23:38:22,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:38:22,371 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 23:38:22,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:38:22,371 INFO L225 Difference]: With dead ends: 51 [2021-12-06 23:38:22,371 INFO L226 Difference]: Without dead ends: 51 [2021-12-06 23:38:22,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:38:22,372 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 102 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:38:22,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 41 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 23:38:22,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-12-06 23:38:22,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2021-12-06 23:38:22,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 44 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 23:38:22,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2021-12-06 23:38:22,376 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 13 [2021-12-06 23:38:22,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:38:22,376 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2021-12-06 23:38:22,376 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 23:38:22,377 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2021-12-06 23:38:22,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 23:38:22,377 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:38:22,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:38:22,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-12-06 23:38:22,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:38:22,579 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 23:38:22,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:38:22,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1346022463, now seen corresponding path program 1 times [2021-12-06 23:38:22,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:38:22,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027378230] [2021-12-06 23:38:22,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:38:22,581 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:38:22,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:38:22,584 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:38:22,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-06 23:38:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:38:22,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 23:38:22,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:38:22,692 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 23:38:22,836 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 23:38:22,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:38:22,837 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:38:22,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027378230] [2021-12-06 23:38:22,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027378230] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:38:22,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:38:22,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:38:22,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885909229] [2021-12-06 23:38:22,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:38:22,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:38:22,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:38:22,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:38:22,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:38:22,838 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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 23:38:23,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:38:23,037 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2021-12-06 23:38:23,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:38:23,038 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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 23:38:23,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:38:23,038 INFO L225 Difference]: With dead ends: 49 [2021-12-06 23:38:23,038 INFO L226 Difference]: Without dead ends: 49 [2021-12-06 23:38:23,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:38:23,039 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 13 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:38:23,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 66 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 20 Unchecked, 0.1s Time] [2021-12-06 23:38:23,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-12-06 23:38:23,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-12-06 23:38:23,041 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 23:38:23,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2021-12-06 23:38:23,041 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 14 [2021-12-06 23:38:23,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:38:23,041 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2021-12-06 23:38:23,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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 23:38:23,042 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2021-12-06 23:38:23,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 23:38:23,042 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:38:23,042 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:38:23,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-12-06 23:38:23,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:38:23,243 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 23:38:23,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:38:23,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1570446787, now seen corresponding path program 1 times [2021-12-06 23:38:23,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:38:23,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [799894092] [2021-12-06 23:38:23,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:38:23,246 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:38:23,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:38:23,248 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:38:23,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-06 23:38:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:38:23,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 23:38:23,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:38:23,371 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 23:38:23,565 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 23:38:23,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:38:24,415 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 23:38:24,416 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:38:24,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [799894092] [2021-12-06 23:38:24,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [799894092] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:38:24,416 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:38:24,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-12-06 23:38:24,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401192580] [2021-12-06 23:38:24,416 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:38:24,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 23:38:24,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:38:24,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 23:38:24,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-12-06 23:38:24,417 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 23:38:26,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:38:26,841 INFO L93 Difference]: Finished difference Result 106 states and 124 transitions. [2021-12-06 23:38:26,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 23:38:26,842 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 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 23:38:26,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:38:26,844 INFO L225 Difference]: With dead ends: 106 [2021-12-06 23:38:26,844 INFO L226 Difference]: Without dead ends: 106 [2021-12-06 23:38:26,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=206, Invalid=444, Unknown=0, NotChecked=0, Total=650 [2021-12-06 23:38:26,844 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 227 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:38:26,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 142 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 154 Invalid, 0 Unknown, 44 Unchecked, 1.1s Time] [2021-12-06 23:38:26,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-12-06 23:38:26,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 85. [2021-12-06 23:38:26,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 80 states have (on average 1.3375) internal successors, (107), 84 states have internal predecessors, (107), 0 states have call successors, (0), 0 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 23:38:26,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 107 transitions. [2021-12-06 23:38:26,849 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 107 transitions. Word has length 17 [2021-12-06 23:38:26,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:38:26,849 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 107 transitions. [2021-12-06 23:38:26,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 23:38:26,850 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 107 transitions. [2021-12-06 23:38:26,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 23:38:26,850 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:38:26,850 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1] [2021-12-06 23:38:26,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-12-06 23:38:27,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:38:27,052 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 23:38:27,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:38:27,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1817992175, now seen corresponding path program 2 times [2021-12-06 23:38:27,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:38:27,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765854767] [2021-12-06 23:38:27,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:38:27,055 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:38:27,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:38:27,057 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:38:27,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-06 23:38:27,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:38:27,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:38:27,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 23:38:27,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:38:27,180 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 23:38:27,410 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 23:38:27,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:38:28,306 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 23:38:28,306 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:38:28,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765854767] [2021-12-06 23:38:28,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765854767] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:38:28,307 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:38:28,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-12-06 23:38:28,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291111451] [2021-12-06 23:38:28,307 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:38:28,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 23:38:28,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:38:28,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 23:38:28,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-12-06 23:38:28,308 INFO L87 Difference]: Start difference. First operand 85 states and 107 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 23:38:31,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:38:31,153 INFO L93 Difference]: Finished difference Result 422 states and 546 transitions. [2021-12-06 23:38:31,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 23:38:31,155 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 23:38:31,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:38:31,157 INFO L225 Difference]: With dead ends: 422 [2021-12-06 23:38:31,157 INFO L226 Difference]: Without dead ends: 422 [2021-12-06 23:38:31,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2021-12-06 23:38:31,158 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 318 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:38:31,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 225 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 176 Invalid, 0 Unknown, 60 Unchecked, 1.2s Time] [2021-12-06 23:38:31,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2021-12-06 23:38:31,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 101. [2021-12-06 23:38:31,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 96 states have (on average 1.3229166666666667) internal successors, (127), 100 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 23:38:31,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 127 transitions. [2021-12-06 23:38:31,164 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 127 transitions. Word has length 18 [2021-12-06 23:38:31,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:38:31,164 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 127 transitions. [2021-12-06 23:38:31,164 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 23:38:31,164 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 127 transitions. [2021-12-06 23:38:31,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 23:38:31,165 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:38:31,165 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 23:38:31,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-12-06 23:38:31,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:38:31,367 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 23:38:31,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:38:31,368 INFO L85 PathProgramCache]: Analyzing trace with hash -511225436, now seen corresponding path program 1 times [2021-12-06 23:38:31,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:38:31,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [119652571] [2021-12-06 23:38:31,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:38:31,370 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:38:31,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:38:31,372 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:38:31,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-06 23:38:31,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:38:31,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 23:38:31,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:38:31,457 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 23:38:31,711 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 23:38:31,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:38:32,418 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 23:38:32,418 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:38:32,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [119652571] [2021-12-06 23:38:32,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [119652571] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:38:32,418 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:38:32,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2021-12-06 23:38:32,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209891515] [2021-12-06 23:38:32,419 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:38:32,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 23:38:32,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:38:32,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 23:38:32,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:38:32,419 INFO L87 Difference]: Start difference. First operand 101 states and 127 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 23:38:32,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:38:32,851 INFO L93 Difference]: Finished difference Result 117 states and 148 transitions. [2021-12-06 23:38:32,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 23:38:32,852 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 23:38:32,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:38:32,852 INFO L225 Difference]: With dead ends: 117 [2021-12-06 23:38:32,853 INFO L226 Difference]: Without dead ends: 117 [2021-12-06 23:38:32,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-12-06 23:38:32,853 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 23 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:38:32,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 102 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 22 Unchecked, 0.2s Time] [2021-12-06 23:38:32,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-12-06 23:38:32,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 111. [2021-12-06 23:38:32,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 106 states have (on average 1.3396226415094339) internal successors, (142), 110 states have internal predecessors, (142), 0 states have call successors, (0), 0 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 23:38:32,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 142 transitions. [2021-12-06 23:38:32,857 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 142 transitions. Word has length 18 [2021-12-06 23:38:32,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:38:32,857 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 142 transitions. [2021-12-06 23:38:32,857 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 23:38:32,857 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 142 transitions. [2021-12-06 23:38:32,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-06 23:38:32,858 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:38:32,858 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 23:38:32,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-12-06 23:38:33,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:38:33,059 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 23:38:33,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:38:33,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1331880655, now seen corresponding path program 1 times [2021-12-06 23:38:33,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:38:33,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1620093343] [2021-12-06 23:38:33,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:38:33,063 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:38:33,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:38:33,065 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:38:33,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-06 23:38:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:38:33,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 23:38:33,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:38:33,162 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 23:38:33,327 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 23:38:33,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:38:34,397 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 23:38:34,397 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:38:34,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1620093343] [2021-12-06 23:38:34,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1620093343] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:38:34,398 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:38:34,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-12-06 23:38:34,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126875604] [2021-12-06 23:38:34,398 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:38:34,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 23:38:34,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:38:34,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 23:38:34,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-12-06 23:38:34,399 INFO L87 Difference]: Start difference. First operand 111 states and 142 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 23:38:34,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:38:34,941 INFO L93 Difference]: Finished difference Result 115 states and 146 transitions. [2021-12-06 23:38:34,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:38:34,942 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 23:38:34,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:38:34,943 INFO L225 Difference]: With dead ends: 115 [2021-12-06 23:38:34,943 INFO L226 Difference]: Without dead ends: 113 [2021-12-06 23:38:34,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:38:34,943 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 39 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:38:34,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 106 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 110 Invalid, 0 Unknown, 24 Unchecked, 0.5s Time] [2021-12-06 23:38:34,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-12-06 23:38:34,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2021-12-06 23:38:34,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 103 states have (on average 1.3300970873786409) internal successors, (137), 106 states have internal predecessors, (137), 0 states have call successors, (0), 0 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 23:38:34,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 137 transitions. [2021-12-06 23:38:34,946 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 137 transitions. Word has length 19 [2021-12-06 23:38:34,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:38:34,946 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 137 transitions. [2021-12-06 23:38:34,946 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 23:38:34,947 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 137 transitions. [2021-12-06 23:38:34,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-06 23:38:34,947 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:38:34,947 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:38:34,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-12-06 23:38:35,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:38:35,148 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 23:38:35,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:38:35,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1149452832, now seen corresponding path program 1 times [2021-12-06 23:38:35,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:38:35,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1079930125] [2021-12-06 23:38:35,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:38:35,151 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:38:35,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:38:35,153 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:38:35,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-06 23:38:35,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:38:35,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 23:38:35,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:38:35,253 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 23:38:35,522 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 23:38:35,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:38:36,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 23:38:36,262 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:38:36,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1079930125] [2021-12-06 23:38:36,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1079930125] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:38:36,262 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:38:36,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2021-12-06 23:38:36,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325980664] [2021-12-06 23:38:36,262 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:38:36,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 23:38:36,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:38:36,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 23:38:36,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:38:36,263 INFO L87 Difference]: Start difference. First operand 107 states and 137 transitions. Second operand has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:38:36,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:38:36,653 INFO L93 Difference]: Finished difference Result 144 states and 186 transitions. [2021-12-06 23:38:36,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 23:38:36,654 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-06 23:38:36,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:38:36,655 INFO L225 Difference]: With dead ends: 144 [2021-12-06 23:38:36,655 INFO L226 Difference]: Without dead ends: 144 [2021-12-06 23:38:36,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-12-06 23:38:36,655 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 16 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:38:36,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 152 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 51 Unchecked, 0.2s Time] [2021-12-06 23:38:36,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-12-06 23:38:36,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 129. [2021-12-06 23:38:36,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 125 states have (on average 1.376) internal successors, (172), 128 states have internal predecessors, (172), 0 states have call successors, (0), 0 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 23:38:36,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 172 transitions. [2021-12-06 23:38:36,658 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 172 transitions. Word has length 21 [2021-12-06 23:38:36,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:38:36,659 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 172 transitions. [2021-12-06 23:38:36,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:38:36,659 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 172 transitions. [2021-12-06 23:38:36,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 23:38:36,659 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:38:36,659 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:38:36,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-12-06 23:38:36,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:38:36,861 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 23:38:36,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:38:36,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1273299411, now seen corresponding path program 1 times [2021-12-06 23:38:36,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:38:36,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929453983] [2021-12-06 23:38:36,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:38:36,864 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:38:36,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:38:36,866 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:38:36,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-06 23:38:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:38:36,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 23:38:36,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:38:36,944 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 23:38:37,121 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:38:37,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:38:38,225 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:38:38,225 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:38:38,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929453983] [2021-12-06 23:38:38,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1929453983] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:38:38,225 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:38:38,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-12-06 23:38:38,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403933765] [2021-12-06 23:38:38,226 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:38:38,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 23:38:38,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:38:38,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 23:38:38,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-12-06 23:38:38,227 INFO L87 Difference]: Start difference. First operand 129 states and 172 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 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 23:38:38,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:38:38,897 INFO L93 Difference]: Finished difference Result 145 states and 191 transitions. [2021-12-06 23:38:38,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 23:38:38,898 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-06 23:38:38,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:38:38,899 INFO L225 Difference]: With dead ends: 145 [2021-12-06 23:38:38,899 INFO L226 Difference]: Without dead ends: 143 [2021-12-06 23:38:38,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-12-06 23:38:38,900 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 35 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:38:38,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 105 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 106 Invalid, 0 Unknown, 14 Unchecked, 0.5s Time] [2021-12-06 23:38:38,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-12-06 23:38:38,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-12-06 23:38:38,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 139 states have (on average 1.3453237410071943) internal successors, (187), 142 states have internal predecessors, (187), 0 states have call successors, (0), 0 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 23:38:38,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 187 transitions. [2021-12-06 23:38:38,903 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 187 transitions. Word has length 22 [2021-12-06 23:38:38,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:38:38,903 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 187 transitions. [2021-12-06 23:38:38,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 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 23:38:38,903 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 187 transitions. [2021-12-06 23:38:38,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-06 23:38:38,904 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:38:38,904 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 23:38:38,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-12-06 23:38:39,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:38:39,105 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 23:38:39,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:38:39,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1637861780, now seen corresponding path program 2 times [2021-12-06 23:38:39,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:38:39,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1908087594] [2021-12-06 23:38:39,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:38:39,108 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:38:39,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:38:39,110 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:38:39,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-06 23:38:39,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:38:39,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:38:39,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 23:38:39,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:38:39,256 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 23:38:39,616 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 23:38:39,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:38:41,286 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 23:38:41,286 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:38:41,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1908087594] [2021-12-06 23:38:41,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1908087594] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:38:41,286 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:38:41,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-12-06 23:38:41,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598493673] [2021-12-06 23:38:41,286 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:38:41,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 23:38:41,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:38:41,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 23:38:41,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:38:41,287 INFO L87 Difference]: Start difference. First operand 143 states and 187 transitions. Second operand has 17 states, 16 states have (on average 2.25) internal successors, (36), 17 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 23:38:47,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:38:47,074 INFO L93 Difference]: Finished difference Result 221 states and 278 transitions. [2021-12-06 23:38:47,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 23:38:47,075 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 17 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 23:38:47,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:38:47,077 INFO L225 Difference]: With dead ends: 221 [2021-12-06 23:38:47,077 INFO L226 Difference]: Without dead ends: 218 [2021-12-06 23:38:47,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=304, Invalid=818, Unknown=0, NotChecked=0, Total=1122 [2021-12-06 23:38:47,078 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 281 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:38:47,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 178 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 336 Invalid, 0 Unknown, 58 Unchecked, 2.2s Time] [2021-12-06 23:38:47,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-12-06 23:38:47,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 161. [2021-12-06 23:38:47,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 157 states have (on average 1.3312101910828025) internal successors, (209), 160 states have internal predecessors, (209), 0 states have call successors, (0), 0 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 23:38:47,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 209 transitions. [2021-12-06 23:38:47,081 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 209 transitions. Word has length 23 [2021-12-06 23:38:47,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:38:47,081 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 209 transitions. [2021-12-06 23:38:47,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 17 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 23:38:47,081 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 209 transitions. [2021-12-06 23:38:47,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 23:38:47,082 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:38:47,082 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 23:38:47,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-12-06 23:38:47,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:38:47,283 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 23:38:47,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:38:47,284 INFO L85 PathProgramCache]: Analyzing trace with hash -2028106434, now seen corresponding path program 1 times [2021-12-06 23:38:47,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:38:47,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1927040612] [2021-12-06 23:38:47,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:38:47,286 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:38:47,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:38:47,288 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:38:47,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-06 23:38:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:38:47,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:38:47,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:38:47,484 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 23:38:47,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:38:47,484 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:38:47,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1927040612] [2021-12-06 23:38:47,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1927040612] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:38:47,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:38:47,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:38:47,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129042732] [2021-12-06 23:38:47,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:38:47,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:38:47,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:38:47,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:38:47,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:38:47,486 INFO L87 Difference]: Start difference. First operand 161 states and 209 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 23:38:47,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:38:47,511 INFO L93 Difference]: Finished difference Result 199 states and 261 transitions. [2021-12-06 23:38:47,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:38:47,512 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 25 [2021-12-06 23:38:47,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:38:47,513 INFO L225 Difference]: With dead ends: 199 [2021-12-06 23:38:47,513 INFO L226 Difference]: Without dead ends: 197 [2021-12-06 23:38:47,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 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 23:38:47,513 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:38:47,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 57 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 12 Unchecked, 0.0s Time] [2021-12-06 23:38:47,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-12-06 23:38:47,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 191. [2021-12-06 23:38:47,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 187 states have (on average 1.3262032085561497) internal successors, (248), 190 states have internal predecessors, (248), 0 states have call successors, (0), 0 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 23:38:47,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 248 transitions. [2021-12-06 23:38:47,518 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 248 transitions. Word has length 25 [2021-12-06 23:38:47,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:38:47,518 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 248 transitions. [2021-12-06 23:38:47,518 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 23:38:47,518 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 248 transitions. [2021-12-06 23:38:47,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-06 23:38:47,518 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:38:47,518 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, 1, 1, 1, 1, 1, 1] [2021-12-06 23:38:47,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-12-06 23:38:47,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:38:47,720 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 23:38:47,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:38:47,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1774535125, now seen corresponding path program 1 times [2021-12-06 23:38:47,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:38:47,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406629463] [2021-12-06 23:38:47,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:38:47,723 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:38:47,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:38:47,725 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:38:47,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-12-06 23:38:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:38:47,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:38:47,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:38:47,940 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 23:38:47,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:38:47,940 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:38:47,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406629463] [2021-12-06 23:38:47,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [406629463] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:38:47,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:38:47,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:38:47,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809617283] [2021-12-06 23:38:47,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:38:47,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:38:47,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:38:47,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:38:47,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:38:47,941 INFO L87 Difference]: Start difference. First operand 191 states and 248 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 23:38:47,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:38:47,944 INFO L93 Difference]: Finished difference Result 190 states and 247 transitions. [2021-12-06 23:38:47,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:38:47,945 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 31 [2021-12-06 23:38:47,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:38:47,946 INFO L225 Difference]: With dead ends: 190 [2021-12-06 23:38:47,946 INFO L226 Difference]: Without dead ends: 188 [2021-12-06 23:38:47,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 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 23:38:47,946 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 4 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:38:47,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 59 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 13 Unchecked, 0.0s Time] [2021-12-06 23:38:47,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-12-06 23:38:47,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 158. [2021-12-06 23:38:47,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 155 states have (on average 1.2774193548387096) internal successors, (198), 157 states have internal predecessors, (198), 0 states have call successors, (0), 0 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 23:38:47,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 198 transitions. [2021-12-06 23:38:47,950 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 198 transitions. Word has length 31 [2021-12-06 23:38:47,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:38:47,950 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 198 transitions. [2021-12-06 23:38:47,950 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 23:38:47,951 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 198 transitions. [2021-12-06 23:38:47,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-06 23:38:47,951 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:38:47,951 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 23:38:47,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-12-06 23:38:48,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:38:48,152 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 23:38:48,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:38:48,153 INFO L85 PathProgramCache]: Analyzing trace with hash 740071271, now seen corresponding path program 2 times [2021-12-06 23:38:48,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:38:48,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177109927] [2021-12-06 23:38:48,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:38:48,155 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:38:48,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:38:48,157 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:38:48,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-12-06 23:38:48,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:38:48,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:38:48,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 23:38:48,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:38:48,234 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 23:38:48,827 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 23:38:48,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:38:50,404 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 23:38:50,405 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:38:50,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177109927] [2021-12-06 23:38:50,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1177109927] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:38:50,405 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:38:50,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-12-06 23:38:50,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490676872] [2021-12-06 23:38:50,405 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:38:50,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 23:38:50,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:38:50,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 23:38:50,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:38:50,406 INFO L87 Difference]: Start difference. First operand 158 states and 198 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 23:38:53,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:38:53,329 INFO L93 Difference]: Finished difference Result 194 states and 245 transitions. [2021-12-06 23:38:53,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-06 23:38:53,331 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 23:38:53,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:38:53,332 INFO L225 Difference]: With dead ends: 194 [2021-12-06 23:38:53,332 INFO L226 Difference]: Without dead ends: 194 [2021-12-06 23:38:53,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=189, Invalid=623, Unknown=0, NotChecked=0, Total=812 [2021-12-06 23:38:53,332 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 52 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:38:53,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 138 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 25 Unchecked, 0.4s Time] [2021-12-06 23:38:53,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-12-06 23:38:53,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 178. [2021-12-06 23:38:53,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 175 states have (on average 1.3085714285714285) internal successors, (229), 177 states have internal predecessors, (229), 0 states have call successors, (0), 0 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 23:38:53,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 229 transitions. [2021-12-06 23:38:53,336 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 229 transitions. Word has length 32 [2021-12-06 23:38:53,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:38:53,336 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 229 transitions. [2021-12-06 23:38:53,336 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 23:38:53,336 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 229 transitions. [2021-12-06 23:38:53,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 23:38:53,337 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:38:53,337 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 23:38:53,344 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-12-06 23:38:53,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:38:53,538 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 23:38:53,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:38:53,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1154994598, now seen corresponding path program 1 times [2021-12-06 23:38:53,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:38:53,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125282678] [2021-12-06 23:38:53,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:38:53,541 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:38:53,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:38:53,543 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:38:53,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-12-06 23:38:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:38:53,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 23:38:53,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:38:53,633 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 23:38:55,555 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 23:38:55,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:38:56,970 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 23:38:56,970 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:38:56,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125282678] [2021-12-06 23:38:56,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125282678] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:38:56,970 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:38:56,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-12-06 23:38:56,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848643472] [2021-12-06 23:38:56,970 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:38:56,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 23:38:56,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:38:56,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 23:38:56,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:38:56,971 INFO L87 Difference]: Start difference. First operand 178 states and 229 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 23:38:58,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:38:58,234 INFO L93 Difference]: Finished difference Result 199 states and 254 transitions. [2021-12-06 23:38:58,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 23:38:58,235 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 23:38:58,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:38:58,236 INFO L225 Difference]: With dead ends: 199 [2021-12-06 23:38:58,236 INFO L226 Difference]: Without dead ends: 199 [2021-12-06 23:38:58,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2021-12-06 23:38:58,236 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 40 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:38:58,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 133 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 32 Unchecked, 0.2s Time] [2021-12-06 23:38:58,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-12-06 23:38:58,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 186. [2021-12-06 23:38:58,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 183 states have (on average 1.2950819672131149) internal successors, (237), 185 states have internal predecessors, (237), 0 states have call successors, (0), 0 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 23:38:58,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 237 transitions. [2021-12-06 23:38:58,240 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 237 transitions. Word has length 33 [2021-12-06 23:38:58,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:38:58,240 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 237 transitions. [2021-12-06 23:38:58,240 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 23:38:58,240 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 237 transitions. [2021-12-06 23:38:58,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 23:38:58,241 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:38:58,241 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 23:38:58,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-12-06 23:38:58,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:38:58,442 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 23:38:58,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:38:58,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1467372908, now seen corresponding path program 3 times [2021-12-06 23:38:58,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:38:58,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [850106798] [2021-12-06 23:38:58,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:38:58,444 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:38:58,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:38:58,446 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:38:58,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-12-06 23:38:58,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-06 23:38:58,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:38:58,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 23:38:58,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:38:58,633 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 23:38:58,979 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:38:58,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:38:59,606 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:38:59,606 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:38:59,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [850106798] [2021-12-06 23:38:59,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [850106798] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:38:59,607 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:38:59,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-12-06 23:38:59,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181260610] [2021-12-06 23:38:59,607 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:38:59,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 23:38:59,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:38:59,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 23:38:59,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2021-12-06 23:38:59,608 INFO L87 Difference]: Start difference. First operand 186 states and 237 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 23:39:00,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:39:00,162 INFO L93 Difference]: Finished difference Result 214 states and 269 transitions. [2021-12-06 23:39:00,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 23:39:00,163 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 33 [2021-12-06 23:39:00,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:39:00,164 INFO L225 Difference]: With dead ends: 214 [2021-12-06 23:39:00,164 INFO L226 Difference]: Without dead ends: 210 [2021-12-06 23:39:00,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2021-12-06 23:39:00,165 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 57 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:39:00,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 133 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 135 Invalid, 0 Unknown, 31 Unchecked, 0.4s Time] [2021-12-06 23:39:00,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-12-06 23:39:00,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 207. [2021-12-06 23:39:00,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 204 states have (on average 1.2843137254901962) internal successors, (262), 206 states have internal predecessors, (262), 0 states have call successors, (0), 0 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 23:39:00,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 262 transitions. [2021-12-06 23:39:00,168 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 262 transitions. Word has length 33 [2021-12-06 23:39:00,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:39:00,170 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 262 transitions. [2021-12-06 23:39:00,170 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 23:39:00,170 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 262 transitions. [2021-12-06 23:39:00,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 23:39:00,171 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:39:00,171 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1] [2021-12-06 23:39:00,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-12-06 23:39:00,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:39:00,372 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 23:39:00,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:39:00,373 INFO L85 PathProgramCache]: Analyzing trace with hash -563143139, now seen corresponding path program 3 times [2021-12-06 23:39:00,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:39:00,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [978066554] [2021-12-06 23:39:00,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:39:00,375 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:39:00,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:39:00,376 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:39:00,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-12-06 23:39:00,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-12-06 23:39:00,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:39:00,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 23:39:00,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:39:00,539 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 23:39:01,004 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 23:39:01,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:39:03,151 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 23:39:03,151 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:39:03,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [978066554] [2021-12-06 23:39:03,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [978066554] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:39:03,151 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:39:03,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-12-06 23:39:03,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849213948] [2021-12-06 23:39:03,151 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:39:03,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-06 23:39:03,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:39:03,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-06 23:39:03,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2021-12-06 23:39:03,152 INFO L87 Difference]: Start difference. First operand 207 states and 262 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 23:39:17,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:39:17,874 INFO L93 Difference]: Finished difference Result 1874 states and 2421 transitions. [2021-12-06 23:39:17,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-12-06 23:39:17,875 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 23:39:17,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:39:17,882 INFO L225 Difference]: With dead ends: 1874 [2021-12-06 23:39:17,882 INFO L226 Difference]: Without dead ends: 1874 [2021-12-06 23:39:17,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=704, Invalid=1552, Unknown=0, NotChecked=0, Total=2256 [2021-12-06 23:39:17,883 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 727 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 142 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:39:17,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [727 Valid, 590 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 636 Invalid, 0 Unknown, 142 Unchecked, 3.2s Time] [2021-12-06 23:39:17,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states. [2021-12-06 23:39:17,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 239. [2021-12-06 23:39:17,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 236 states have (on average 1.2796610169491525) internal successors, (302), 238 states have internal predecessors, (302), 0 states have call successors, (0), 0 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 23:39:17,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 302 transitions. [2021-12-06 23:39:17,894 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 302 transitions. Word has length 34 [2021-12-06 23:39:17,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:39:17,894 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 302 transitions. [2021-12-06 23:39:17,894 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 23:39:17,894 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 302 transitions. [2021-12-06 23:39:17,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 23:39:17,894 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:39:17,895 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:39:17,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-12-06 23:39:18,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:39:18,096 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 23:39:18,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:39:18,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1156994876, now seen corresponding path program 2 times [2021-12-06 23:39:18,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:39:18,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310272324] [2021-12-06 23:39:18,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:39:18,098 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:39:18,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:39:18,101 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:39:18,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-12-06 23:39:18,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:39:18,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:39:18,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 23:39:18,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:39:18,193 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 23:39:18,582 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 23:39:18,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:39:20,255 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 23:39:20,255 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:39:20,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310272324] [2021-12-06 23:39:20,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310272324] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:39:20,255 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:39:20,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-12-06 23:39:20,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346696040] [2021-12-06 23:39:20,255 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:39:20,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 23:39:20,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:39:20,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 23:39:20,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-12-06 23:39:20,256 INFO L87 Difference]: Start difference. First operand 239 states and 302 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 23:39:28,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:39:28,547 INFO L93 Difference]: Finished difference Result 450 states and 565 transitions. [2021-12-06 23:39:28,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-12-06 23:39:28,548 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 34 [2021-12-06 23:39:28,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:39:28,550 INFO L225 Difference]: With dead ends: 450 [2021-12-06 23:39:28,550 INFO L226 Difference]: Without dead ends: 450 [2021-12-06 23:39:28,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=453, Invalid=1709, Unknown=0, NotChecked=0, Total=2162 [2021-12-06 23:39:28,551 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 392 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-06 23:39:28,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 189 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 419 Invalid, 0 Unknown, 71 Unchecked, 2.9s Time] [2021-12-06 23:39:28,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-12-06 23:39:28,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 350. [2021-12-06 23:39:28,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 347 states have (on average 1.319884726224784) internal successors, (458), 349 states have internal predecessors, (458), 0 states have call successors, (0), 0 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 23:39:28,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 458 transitions. [2021-12-06 23:39:28,557 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 458 transitions. Word has length 34 [2021-12-06 23:39:28,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:39:28,558 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 458 transitions. [2021-12-06 23:39:28,558 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 23:39:28,558 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 458 transitions. [2021-12-06 23:39:28,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-06 23:39:28,558 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:39:28,558 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:39:28,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-12-06 23:39:28,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:39:28,760 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 23:39:28,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:39:28,761 INFO L85 PathProgramCache]: Analyzing trace with hash 22866668, now seen corresponding path program 3 times [2021-12-06 23:39:28,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:39:28,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [368251430] [2021-12-06 23:39:28,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:39:28,763 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:39:28,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:39:28,765 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:39:28,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-12-06 23:39:28,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-06 23:39:28,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:39:28,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 23:39:28,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:39:28,861 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 23:39:29,174 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 23:39:29,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:39:29,795 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 23:39:29,795 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:39:29,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [368251430] [2021-12-06 23:39:29,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [368251430] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:39:29,795 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:39:29,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-12-06 23:39:29,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73206724] [2021-12-06 23:39:29,796 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:39:29,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 23:39:29,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:39:29,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 23:39:29,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:39:29,796 INFO L87 Difference]: Start difference. First operand 350 states and 458 transitions. Second operand has 12 states, 11 states have (on average 4.0) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 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 23:39:30,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:39:30,214 INFO L93 Difference]: Finished difference Result 463 states and 612 transitions. [2021-12-06 23:39:30,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 23:39:30,216 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.0) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 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 23:39:30,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:39:30,217 INFO L225 Difference]: With dead ends: 463 [2021-12-06 23:39:30,217 INFO L226 Difference]: Without dead ends: 463 [2021-12-06 23:39:30,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-12-06 23:39:30,218 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 38 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:39:30,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 72 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 31 Unchecked, 0.2s Time] [2021-12-06 23:39:30,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2021-12-06 23:39:30,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 428. [2021-12-06 23:39:30,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 425 states have (on average 1.348235294117647) internal successors, (573), 427 states have internal predecessors, (573), 0 states have call successors, (0), 0 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 23:39:30,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 573 transitions. [2021-12-06 23:39:30,224 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 573 transitions. Word has length 35 [2021-12-06 23:39:30,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:39:30,224 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 573 transitions. [2021-12-06 23:39:30,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.0) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 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 23:39:30,225 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 573 transitions. [2021-12-06 23:39:30,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 23:39:30,225 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:39:30,225 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:39:30,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-12-06 23:39:30,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:39:30,425 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 23:39:30,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:39:30,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1721521442, now seen corresponding path program 1 times [2021-12-06 23:39:30,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:39:30,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2144204932] [2021-12-06 23:39:30,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:39:30,426 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:39:30,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:39:30,427 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:39:30,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-12-06 23:39:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:39:30,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 23:39:30,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:39:30,506 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 23:39:31,352 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 23:39:31,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:39:32,260 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 23:39:32,261 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:39:32,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2144204932] [2021-12-06 23:39:32,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2144204932] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:39:32,261 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:39:32,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2021-12-06 23:39:32,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391708349] [2021-12-06 23:39:32,261 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:39:32,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 23:39:32,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:39:32,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 23:39:32,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-12-06 23:39:32,262 INFO L87 Difference]: Start difference. First operand 428 states and 573 transitions. Second operand has 15 states, 14 states have (on average 4.428571428571429) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 23:39:33,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:39:33,230 INFO L93 Difference]: Finished difference Result 634 states and 839 transitions. [2021-12-06 23:39:33,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 23:39:33,230 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.428571428571429) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 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 36 [2021-12-06 23:39:33,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:39:33,232 INFO L225 Difference]: With dead ends: 634 [2021-12-06 23:39:33,232 INFO L226 Difference]: Without dead ends: 634 [2021-12-06 23:39:33,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-12-06 23:39:33,233 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 37 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:39:33,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 144 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 35 Unchecked, 0.1s Time] [2021-12-06 23:39:33,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2021-12-06 23:39:33,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 550. [2021-12-06 23:39:33,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 547 states have (on average 1.336380255941499) internal successors, (731), 549 states have internal predecessors, (731), 0 states have call successors, (0), 0 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 23:39:33,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 731 transitions. [2021-12-06 23:39:33,241 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 731 transitions. Word has length 36 [2021-12-06 23:39:33,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:39:33,241 INFO L470 AbstractCegarLoop]: Abstraction has 550 states and 731 transitions. [2021-12-06 23:39:33,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.428571428571429) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 23:39:33,241 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 731 transitions. [2021-12-06 23:39:33,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 23:39:33,242 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:39:33,242 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:39:33,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2021-12-06 23:39:33,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:39:33,443 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 23:39:33,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:39:33,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1063336754, now seen corresponding path program 4 times [2021-12-06 23:39:33,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:39:33,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [750690239] [2021-12-06 23:39:33,445 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 23:39:33,446 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:39:33,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:39:33,448 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:39:33,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-12-06 23:39:33,521 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 23:39:33,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:39:33,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-06 23:39:33,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:39:33,542 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 23:39:34,014 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:39:34,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:39:36,576 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:39:36,576 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:39:36,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [750690239] [2021-12-06 23:39:36,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [750690239] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:39:36,576 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:39:36,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 24 [2021-12-06 23:39:36,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539244669] [2021-12-06 23:39:36,576 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:39:36,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-06 23:39:36,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:39:36,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-06 23:39:36,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2021-12-06 23:39:36,577 INFO L87 Difference]: Start difference. First operand 550 states and 731 transitions. Second operand has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 0 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 23:39:37,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:39:37,323 INFO L93 Difference]: Finished difference Result 610 states and 804 transitions. [2021-12-06 23:39:37,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 23:39:37,324 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 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 36 [2021-12-06 23:39:37,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:39:37,327 INFO L225 Difference]: With dead ends: 610 [2021-12-06 23:39:37,327 INFO L226 Difference]: Without dead ends: 602 [2021-12-06 23:39:37,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2021-12-06 23:39:37,327 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 49 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:39:37,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 181 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 87 Invalid, 0 Unknown, 34 Unchecked, 0.3s Time] [2021-12-06 23:39:37,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-12-06 23:39:37,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 598. [2021-12-06 23:39:37,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 595 states have (on average 1.3310924369747898) internal successors, (792), 597 states have internal predecessors, (792), 0 states have call successors, (0), 0 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 23:39:37,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 792 transitions. [2021-12-06 23:39:37,336 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 792 transitions. Word has length 36 [2021-12-06 23:39:37,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:39:37,336 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 792 transitions. [2021-12-06 23:39:37,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 0 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 23:39:37,336 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 792 transitions. [2021-12-06 23:39:37,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-06 23:39:37,337 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:39:37,337 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 23:39:37,344 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-12-06 23:39:37,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:39:37,538 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 23:39:37,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:39:37,538 INFO L85 PathProgramCache]: Analyzing trace with hash -710345958, now seen corresponding path program 2 times [2021-12-06 23:39:37,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:39:37,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145674422] [2021-12-06 23:39:37,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:39:37,539 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:39:37,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:39:37,540 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:39:37,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-12-06 23:39:37,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:39:37,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:39:37,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 23:39:37,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:39:37,737 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 23:39:38,287 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 23:39:38,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:39:39,231 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 23:39:39,231 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:39:39,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145674422] [2021-12-06 23:39:39,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1145674422] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:39:39,231 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:39:39,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2021-12-06 23:39:39,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932958453] [2021-12-06 23:39:39,232 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:39:39,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 23:39:39,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:39:39,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 23:39:39,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-12-06 23:39:39,232 INFO L87 Difference]: Start difference. First operand 598 states and 792 transitions. Second operand has 15 states, 14 states have (on average 4.0) internal successors, (56), 15 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 23:39:39,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:39:39,808 INFO L93 Difference]: Finished difference Result 668 states and 868 transitions. [2021-12-06 23:39:39,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 23:39:39,808 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.0) internal successors, (56), 15 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 39 [2021-12-06 23:39:39,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:39:39,811 INFO L225 Difference]: With dead ends: 668 [2021-12-06 23:39:39,811 INFO L226 Difference]: Without dead ends: 668 [2021-12-06 23:39:39,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:39:39,812 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 33 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:39:39,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 123 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 45 Unchecked, 0.3s Time] [2021-12-06 23:39:39,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2021-12-06 23:39:39,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 596. [2021-12-06 23:39:39,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 593 states have (on average 1.327150084317032) internal successors, (787), 595 states have internal predecessors, (787), 0 states have call successors, (0), 0 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 23:39:39,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 787 transitions. [2021-12-06 23:39:39,819 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 787 transitions. Word has length 39 [2021-12-06 23:39:39,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:39:39,820 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 787 transitions. [2021-12-06 23:39:39,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.0) internal successors, (56), 15 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 23:39:39,820 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 787 transitions. [2021-12-06 23:39:39,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-06 23:39:39,820 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:39:39,820 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:39:39,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-12-06 23:39:40,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:39:40,022 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 23:39:40,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:39:40,023 INFO L85 PathProgramCache]: Analyzing trace with hash 898073347, now seen corresponding path program 1 times [2021-12-06 23:39:40,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:39:40,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742941338] [2021-12-06 23:39:40,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:39:40,024 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:39:40,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:39:40,025 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:39:40,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-12-06 23:39:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:39:40,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-06 23:39:40,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:39:40,136 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 23:39:40,575 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:39:40,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:39:42,783 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:39:42,784 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:39:42,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742941338] [2021-12-06 23:39:42,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [742941338] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:39:42,784 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:39:42,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2021-12-06 23:39:42,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654106993] [2021-12-06 23:39:42,784 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:39:42,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-06 23:39:42,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:39:42,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-06 23:39:42,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2021-12-06 23:39:42,785 INFO L87 Difference]: Start difference. First operand 596 states and 787 transitions. Second operand has 22 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 22 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 23:39:44,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:39:44,065 INFO L93 Difference]: Finished difference Result 629 states and 825 transitions. [2021-12-06 23:39:44,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 23:39:44,067 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 22 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 39 [2021-12-06 23:39:44,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:39:44,069 INFO L225 Difference]: With dead ends: 629 [2021-12-06 23:39:44,069 INFO L226 Difference]: Without dead ends: 627 [2021-12-06 23:39:44,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2021-12-06 23:39:44,070 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 66 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 23:39:44,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 170 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 156 Invalid, 0 Unknown, 42 Unchecked, 0.8s Time] [2021-12-06 23:39:44,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2021-12-06 23:39:44,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 620. [2021-12-06 23:39:44,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 617 states have (on average 1.320907617504052) internal successors, (815), 619 states have internal predecessors, (815), 0 states have call successors, (0), 0 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 23:39:44,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 815 transitions. [2021-12-06 23:39:44,077 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 815 transitions. Word has length 39 [2021-12-06 23:39:44,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:39:44,077 INFO L470 AbstractCegarLoop]: Abstraction has 620 states and 815 transitions. [2021-12-06 23:39:44,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 22 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 23:39:44,077 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 815 transitions. [2021-12-06 23:39:44,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-06 23:39:44,078 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:39:44,078 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:39:44,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2021-12-06 23:39:44,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:39:44,279 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 23:39:44,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:39:44,280 INFO L85 PathProgramCache]: Analyzing trace with hash 63698229, now seen corresponding path program 5 times [2021-12-06 23:39:44,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:39:44,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808773595] [2021-12-06 23:39:44,281 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 23:39:44,281 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:39:44,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:39:44,282 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:39:44,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-12-06 23:39:44,452 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-12-06 23:39:44,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:39:44,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-06 23:39:44,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:39:44,467 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 23:39:44,867 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-06 23:39:44,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:39:47,616 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 1 proven. 28 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 23:39:47,616 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:39:47,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808773595] [2021-12-06 23:39:47,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808773595] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:39:47,616 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:39:47,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2021-12-06 23:39:47,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950386568] [2021-12-06 23:39:47,616 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:39:47,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 23:39:47,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:39:47,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 23:39:47,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-12-06 23:39:47,617 INFO L87 Difference]: Start difference. First operand 620 states and 815 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 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 23:40:06,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:40:06,821 INFO L93 Difference]: Finished difference Result 868 states and 1109 transitions. [2021-12-06 23:40:06,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-12-06 23:40:06,823 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-12-06 23:40:06,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:40:06,825 INFO L225 Difference]: With dead ends: 868 [2021-12-06 23:40:06,826 INFO L226 Difference]: Without dead ends: 846 [2021-12-06 23:40:06,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 920 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=691, Invalid=2615, Unknown=0, NotChecked=0, Total=3306 [2021-12-06 23:40:06,827 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 785 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:40:06,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 190 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-12-06 23:40:06,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2021-12-06 23:40:06,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 707. [2021-12-06 23:40:06,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 704 states have (on average 1.3139204545454546) internal successors, (925), 706 states have internal predecessors, (925), 0 states have call successors, (0), 0 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 23:40:06,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 925 transitions. [2021-12-06 23:40:06,838 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 925 transitions. Word has length 40 [2021-12-06 23:40:06,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:40:06,838 INFO L470 AbstractCegarLoop]: Abstraction has 707 states and 925 transitions. [2021-12-06 23:40:06,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 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 23:40:06,838 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 925 transitions. [2021-12-06 23:40:06,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-06 23:40:06,839 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:40:06,839 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:40:06,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2021-12-06 23:40:07,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:40:07,040 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 23:40:07,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:40:07,041 INFO L85 PathProgramCache]: Analyzing trace with hash 799217830, now seen corresponding path program 4 times [2021-12-06 23:40:07,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:40:07,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133506391] [2021-12-06 23:40:07,043 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 23:40:07,043 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:40:07,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:40:07,045 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:40:07,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-12-06 23:40:07,150 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 23:40:07,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:40:07,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-06 23:40:07,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:40:07,167 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 23:40:07,846 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 23:40:07,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:40:10,797 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 23:40:10,797 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:40:10,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133506391] [2021-12-06 23:40:10,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2133506391] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:40:10,798 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:40:10,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-12-06 23:40:10,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413300405] [2021-12-06 23:40:10,798 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:40:10,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-06 23:40:10,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:40:10,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-06 23:40:10,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2021-12-06 23:40:10,799 INFO L87 Difference]: Start difference. First operand 707 states and 925 transitions. Second operand has 22 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 22 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 23:40:18,602 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:40:25,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:40:25,540 INFO L93 Difference]: Finished difference Result 977 states and 1249 transitions. [2021-12-06 23:40:25,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-06 23:40:25,541 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 22 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 41 [2021-12-06 23:40:25,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:40:25,545 INFO L225 Difference]: With dead ends: 977 [2021-12-06 23:40:25,545 INFO L226 Difference]: Without dead ends: 977 [2021-12-06 23:40:25,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=709, Invalid=1943, Unknown=0, NotChecked=0, Total=2652 [2021-12-06 23:40:25,546 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 367 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:40:25,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 183 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 458 Invalid, 0 Unknown, 36 Unchecked, 6.6s Time] [2021-12-06 23:40:25,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2021-12-06 23:40:25,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 859. [2021-12-06 23:40:25,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 856 states have (on average 1.2978971962616823) internal successors, (1111), 858 states have internal predecessors, (1111), 0 states have call successors, (0), 0 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 23:40:25,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1111 transitions. [2021-12-06 23:40:25,562 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1111 transitions. Word has length 41 [2021-12-06 23:40:25,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:40:25,562 INFO L470 AbstractCegarLoop]: Abstraction has 859 states and 1111 transitions. [2021-12-06 23:40:25,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 22 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 23:40:25,562 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1111 transitions. [2021-12-06 23:40:25,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-06 23:40:25,563 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:40:25,563 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 23:40:25,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2021-12-06 23:40:25,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:40:25,764 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 23:40:25,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:40:25,765 INFO L85 PathProgramCache]: Analyzing trace with hash -278496772, now seen corresponding path program 3 times [2021-12-06 23:40:25,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:40:25,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1414420751] [2021-12-06 23:40:25,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:40:25,767 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:40:25,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:40:25,769 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:40:25,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-12-06 23:40:25,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-06 23:40:25,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:40:25,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 23:40:25,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:40:25,926 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 23:40:26,882 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-06 23:40:26,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:40:26,883 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:40:26,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1414420751] [2021-12-06 23:40:26,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1414420751] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:40:26,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:40:26,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:40:26,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724344917] [2021-12-06 23:40:26,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:40:26,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 23:40:26,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:40:26,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 23:40:26,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:40:26,884 INFO L87 Difference]: Start difference. First operand 859 states and 1111 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:26,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:40:26,902 INFO L93 Difference]: Finished difference Result 877 states and 1121 transitions. [2021-12-06 23:40:26,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:40:26,902 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 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 23:40:26,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:40:26,905 INFO L225 Difference]: With dead ends: 877 [2021-12-06 23:40:26,905 INFO L226 Difference]: Without dead ends: 877 [2021-12-06 23:40:26,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:40:26,905 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:40:26,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 66 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 28 Unchecked, 0.0s Time] [2021-12-06 23:40:26,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2021-12-06 23:40:26,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 853. [2021-12-06 23:40:26,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 850 states have (on average 1.2894117647058823) internal successors, (1096), 852 states have internal predecessors, (1096), 0 states have call successors, (0), 0 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 23:40:26,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1096 transitions. [2021-12-06 23:40:26,916 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1096 transitions. Word has length 44 [2021-12-06 23:40:26,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:40:26,916 INFO L470 AbstractCegarLoop]: Abstraction has 853 states and 1096 transitions. [2021-12-06 23:40:26,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 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 23:40:26,916 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1096 transitions. [2021-12-06 23:40:26,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 23:40:26,916 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:40:26,916 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 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 23:40:26,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2021-12-06 23:40:27,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:40:27,117 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 23:40:27,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:40:27,118 INFO L85 PathProgramCache]: Analyzing trace with hash 207140145, now seen corresponding path program 2 times [2021-12-06 23:40:27,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:40:27,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [9451496] [2021-12-06 23:40:27,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:40:27,120 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:40:27,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:40:27,122 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:40:27,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-12-06 23:40:27,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:40:27,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:40:27,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 23:40:27,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:40:27,267 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 23:40:27,737 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 23:40:27,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:40:28,646 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 23:40:28,647 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:40:28,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [9451496] [2021-12-06 23:40:28,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [9451496] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:40:28,647 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:40:28,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2021-12-06 23:40:28,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289469967] [2021-12-06 23:40:28,647 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:40:28,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 23:40:28,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:40:28,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 23:40:28,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-12-06 23:40:28,648 INFO L87 Difference]: Start difference. First operand 853 states and 1096 transitions. Second operand has 15 states, 14 states have (on average 5.0) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 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 23:40:29,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:40:29,198 INFO L93 Difference]: Finished difference Result 876 states and 1121 transitions. [2021-12-06 23:40:29,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 23:40:29,198 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.0) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 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 23:40:29,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:40:29,201 INFO L225 Difference]: With dead ends: 876 [2021-12-06 23:40:29,201 INFO L226 Difference]: Without dead ends: 876 [2021-12-06 23:40:29,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-12-06 23:40:29,201 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 17 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:40:29,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 113 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 29 Unchecked, 0.0s Time] [2021-12-06 23:40:29,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2021-12-06 23:40:29,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 571. [2021-12-06 23:40:29,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 568 states have (on average 1.301056338028169) internal successors, (739), 570 states have internal predecessors, (739), 0 states have call successors, (0), 0 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 23:40:29,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 739 transitions. [2021-12-06 23:40:29,209 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 739 transitions. Word has length 45 [2021-12-06 23:40:29,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:40:29,209 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 739 transitions. [2021-12-06 23:40:29,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.0) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 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 23:40:29,210 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 739 transitions. [2021-12-06 23:40:29,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-06 23:40:29,210 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:40:29,210 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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 23:40:29,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2021-12-06 23:40:29,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:40:29,411 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 23:40:29,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:40:29,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1655856976, now seen corresponding path program 1 times [2021-12-06 23:40:29,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:40:29,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353683707] [2021-12-06 23:40:29,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:40:29,414 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:40:29,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:40:29,416 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:40:29,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-12-06 23:40:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:40:29,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 23:40:29,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:40:29,529 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 23:40:31,582 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 23:40:31,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:40:33,029 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 23:40:33,029 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:40:33,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353683707] [2021-12-06 23:40:33,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1353683707] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:40:33,029 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:40:33,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2021-12-06 23:40:33,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919651368] [2021-12-06 23:40:33,030 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:40:33,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 23:40:33,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:40:33,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 23:40:33,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2021-12-06 23:40:33,030 INFO L87 Difference]: Start difference. First operand 571 states and 739 transitions. Second operand has 19 states, 18 states have (on average 4.111111111111111) internal successors, (74), 19 states have internal predecessors, (74), 0 states have call successors, (0), 0 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 23:40:33,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:40:33,988 INFO L93 Difference]: Finished difference Result 983 states and 1270 transitions. [2021-12-06 23:40:33,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 23:40:33,989 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.111111111111111) internal successors, (74), 19 states have internal predecessors, (74), 0 states have call successors, (0), 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 46 [2021-12-06 23:40:33,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:40:33,993 INFO L225 Difference]: With dead ends: 983 [2021-12-06 23:40:33,993 INFO L226 Difference]: Without dead ends: 983 [2021-12-06 23:40:33,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2021-12-06 23:40:33,993 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 59 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:40:33,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 149 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 41 Unchecked, 0.4s Time] [2021-12-06 23:40:33,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2021-12-06 23:40:34,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 844. [2021-12-06 23:40:34,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 841 states have (on average 1.3115338882282996) internal successors, (1103), 843 states have internal predecessors, (1103), 0 states have call successors, (0), 0 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 23:40:34,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1103 transitions. [2021-12-06 23:40:34,003 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1103 transitions. Word has length 46 [2021-12-06 23:40:34,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:40:34,003 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 1103 transitions. [2021-12-06 23:40:34,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.111111111111111) internal successors, (74), 19 states have internal predecessors, (74), 0 states have call successors, (0), 0 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 23:40:34,003 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1103 transitions. [2021-12-06 23:40:34,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-06 23:40:34,004 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:40:34,004 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 23:40:34,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2021-12-06 23:40:34,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:40:34,205 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 23:40:34,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:40:34,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1128392693, now seen corresponding path program 2 times [2021-12-06 23:40:34,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:40:34,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1355467594] [2021-12-06 23:40:34,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:40:34,207 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:40:34,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:40:34,210 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:40:34,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-12-06 23:40:34,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:40:34,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:40:34,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-06 23:40:34,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:40:34,339 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 23:40:34,813 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 23:40:34,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:40:37,755 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 23:40:37,756 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:40:37,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1355467594] [2021-12-06 23:40:37,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1355467594] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:40:37,756 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:40:37,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2021-12-06 23:40:37,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998324657] [2021-12-06 23:40:37,756 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:40:37,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 23:40:37,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:40:37,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 23:40:37,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2021-12-06 23:40:37,757 INFO L87 Difference]: Start difference. First operand 844 states and 1103 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 23:40:39,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:40:39,629 INFO L93 Difference]: Finished difference Result 897 states and 1170 transitions. [2021-12-06 23:40:39,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 23:40:39,631 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 23:40:39,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:40:39,634 INFO L225 Difference]: With dead ends: 897 [2021-12-06 23:40:39,634 INFO L226 Difference]: Without dead ends: 895 [2021-12-06 23:40:39,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=133, Invalid=737, Unknown=0, NotChecked=0, Total=870 [2021-12-06 23:40:39,635 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 81 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:40:39,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 192 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 237 Invalid, 0 Unknown, 18 Unchecked, 1.1s Time] [2021-12-06 23:40:39,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2021-12-06 23:40:39,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 852. [2021-12-06 23:40:39,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 849 states have (on average 1.3085983510011778) internal successors, (1111), 851 states have internal predecessors, (1111), 0 states have call successors, (0), 0 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 23:40:39,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1111 transitions. [2021-12-06 23:40:39,646 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1111 transitions. Word has length 47 [2021-12-06 23:40:39,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:40:39,646 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 1111 transitions. [2021-12-06 23:40:39,646 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 23:40:39,647 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1111 transitions. [2021-12-06 23:40:39,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-06 23:40:39,647 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:40:39,647 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:40:39,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-12-06 23:40:39,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:40:39,848 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 23:40:39,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:40:39,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1545371728, now seen corresponding path program 2 times [2021-12-06 23:40:39,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:40:39,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [989901648] [2021-12-06 23:40:39,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:40:39,851 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:40:39,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:40:39,854 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:40:39,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-12-06 23:40:40,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:40:40,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:40:40,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 23:40:40,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:40:40,025 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 23:40:40,480 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-06 23:40:40,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:40:41,292 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-06 23:40:41,293 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:40:41,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [989901648] [2021-12-06 23:40:41,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [989901648] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:40:41,293 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:40:41,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-12-06 23:40:41,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987245591] [2021-12-06 23:40:41,293 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:40:41,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 23:40:41,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:40:41,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 23:40:41,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-12-06 23:40:41,294 INFO L87 Difference]: Start difference. First operand 852 states and 1111 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 23:40:41,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:40:41,420 INFO L93 Difference]: Finished difference Result 855 states and 1106 transitions. [2021-12-06 23:40:41,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:40:41,420 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 50 [2021-12-06 23:40:41,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:40:41,423 INFO L225 Difference]: With dead ends: 855 [2021-12-06 23:40:41,423 INFO L226 Difference]: Without dead ends: 855 [2021-12-06 23:40:41,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 86 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 23:40:41,424 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 15 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:40:41,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 90 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 24 Unchecked, 0.1s Time] [2021-12-06 23:40:41,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-12-06 23:40:41,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 844. [2021-12-06 23:40:41,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 841 states have (on average 1.2984542211652794) internal successors, (1092), 843 states have internal predecessors, (1092), 0 states have call successors, (0), 0 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 23:40:41,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1092 transitions. [2021-12-06 23:40:41,432 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1092 transitions. Word has length 50 [2021-12-06 23:40:41,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:40:41,432 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 1092 transitions. [2021-12-06 23:40:41,432 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 23:40:41,432 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1092 transitions. [2021-12-06 23:40:41,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-06 23:40:41,433 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:40:41,433 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 23:40:41,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2021-12-06 23:40:41,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:40:41,634 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 23:40:41,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:40:41,635 INFO L85 PathProgramCache]: Analyzing trace with hash 448427589, now seen corresponding path program 3 times [2021-12-06 23:40:41,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:40:41,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [457297625] [2021-12-06 23:40:41,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:40:41,637 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:40:41,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:40:41,640 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:40:41,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-12-06 23:40:41,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-06 23:40:41,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:40:41,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 23:40:41,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:40:41,749 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 23:40:42,537 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-06 23:40:42,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:40:42,537 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:40:42,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [457297625] [2021-12-06 23:40:42,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [457297625] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:40:42,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:40:42,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:40:42,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448862104] [2021-12-06 23:40:42,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:40:42,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 23:40:42,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:40:42,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 23:40:42,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:40:42,538 INFO L87 Difference]: Start difference. First operand 844 states and 1092 transitions. Second operand has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:42,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:40:42,557 INFO L93 Difference]: Finished difference Result 887 states and 1133 transitions. [2021-12-06 23:40:42,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:40:42,557 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-12-06 23:40:42,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:40:42,560 INFO L225 Difference]: With dead ends: 887 [2021-12-06 23:40:42,560 INFO L226 Difference]: Without dead ends: 887 [2021-12-06 23:40:42,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:40:42,561 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:40:42,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 49 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 21 Unchecked, 0.0s Time] [2021-12-06 23:40:42,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2021-12-06 23:40:42,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 643. [2021-12-06 23:40:42,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 641 states have (on average 1.249609984399376) internal successors, (801), 642 states have internal predecessors, (801), 0 states have call successors, (0), 0 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 23:40:42,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 801 transitions. [2021-12-06 23:40:42,569 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 801 transitions. Word has length 50 [2021-12-06 23:40:42,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:40:42,569 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 801 transitions. [2021-12-06 23:40:42,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:42,569 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 801 transitions. [2021-12-06 23:40:42,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-06 23:40:42,570 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:40:42,570 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:40:42,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2021-12-06 23:40:42,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:40:42,771 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 23:40:42,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:40:42,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1477627017, now seen corresponding path program 6 times [2021-12-06 23:40:42,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:40:42,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [575856411] [2021-12-06 23:40:42,773 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 23:40:42,773 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:40:42,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:40:42,776 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:40:42,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-12-06 23:40:43,044 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-12-06 23:40:43,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:40:43,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-06 23:40:43,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:40:43,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-06 23:40:43,631 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 23:40:43,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:40:46,283 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 23:40:46,283 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:40:46,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [575856411] [2021-12-06 23:40:46,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [575856411] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:40:46,284 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:40:46,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-12-06 23:40:46,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865986220] [2021-12-06 23:40:46,284 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:40:46,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-06 23:40:46,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:40:46,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-06 23:40:46,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2021-12-06 23:40:46,286 INFO L87 Difference]: Start difference. First operand 643 states and 801 transitions. Second operand has 22 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 22 states have internal predecessors, (74), 0 states have call successors, (0), 0 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 23:41:22,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:41:22,808 INFO L93 Difference]: Finished difference Result 1906 states and 2368 transitions. [2021-12-06 23:41:22,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-12-06 23:41:22,810 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 22 states have internal predecessors, (74), 0 states have call successors, (0), 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 23:41:22,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:41:22,816 INFO L225 Difference]: With dead ends: 1906 [2021-12-06 23:41:22,816 INFO L226 Difference]: Without dead ends: 1906 [2021-12-06 23:41:22,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3070 ImplicationChecksByTransitivity, 31.3s TimeCoverageRelationStatistics Valid=1841, Invalid=7089, Unknown=0, NotChecked=0, Total=8930 [2021-12-06 23:41:22,819 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 935 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 256 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-12-06 23:41:22,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [935 Valid, 340 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 751 Invalid, 0 Unknown, 256 Unchecked, 6.9s Time] [2021-12-06 23:41:22,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2021-12-06 23:41:22,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1294. [2021-12-06 23:41:22,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1292 states have (on average 1.2670278637770898) internal successors, (1637), 1293 states have internal predecessors, (1637), 0 states have call successors, (0), 0 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 23:41:22,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 1637 transitions. [2021-12-06 23:41:22,840 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 1637 transitions. Word has length 51 [2021-12-06 23:41:22,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:41:22,840 INFO L470 AbstractCegarLoop]: Abstraction has 1294 states and 1637 transitions. [2021-12-06 23:41:22,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 22 states have internal predecessors, (74), 0 states have call successors, (0), 0 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 23:41:22,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 1637 transitions. [2021-12-06 23:41:22,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-06 23:41:22,841 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:41:22,841 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:41:22,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2021-12-06 23:41:23,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:41:23,042 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 23:41:23,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:41:23,043 INFO L85 PathProgramCache]: Analyzing trace with hash 476458761, now seen corresponding path program 7 times [2021-12-06 23:41:23,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:41:23,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295418389] [2021-12-06 23:41:23,044 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 23:41:23,045 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:41:23,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:41:23,047 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:41:23,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-12-06 23:41:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:41:23,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-06 23:41:23,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:41:23,199 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 23:41:23,755 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 57 proven. 26 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 23:41:23,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:41:26,412 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 23:41:26,412 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:41:26,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295418389] [2021-12-06 23:41:26,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [295418389] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:41:26,412 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:41:26,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 24 [2021-12-06 23:41:26,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373172640] [2021-12-06 23:41:26,412 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:41:26,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-06 23:41:26,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:41:26,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-06 23:41:26,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2021-12-06 23:41:26,413 INFO L87 Difference]: Start difference. First operand 1294 states and 1637 transitions. Second operand has 24 states, 24 states have (on average 3.6666666666666665) internal successors, (88), 24 states have internal predecessors, (88), 0 states have call successors, (0), 0 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 23:41:27,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:41:27,567 INFO L93 Difference]: Finished difference Result 1512 states and 1898 transitions. [2021-12-06 23:41:27,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 23:41:27,568 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.6666666666666665) internal successors, (88), 24 states have internal predecessors, (88), 0 states have call successors, (0), 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 53 [2021-12-06 23:41:27,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:41:27,573 INFO L225 Difference]: With dead ends: 1512 [2021-12-06 23:41:27,573 INFO L226 Difference]: Without dead ends: 1496 [2021-12-06 23:41:27,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2021-12-06 23:41:27,574 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 47 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 23:41:27,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 182 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 228 Invalid, 0 Unknown, 11 Unchecked, 0.9s Time] [2021-12-06 23:41:27,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-12-06 23:41:27,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1424. [2021-12-06 23:41:27,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1422 states have (on average 1.2728551336146272) internal successors, (1810), 1423 states have internal predecessors, (1810), 0 states have call successors, (0), 0 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 23:41:27,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 1810 transitions. [2021-12-06 23:41:27,593 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 1810 transitions. Word has length 53 [2021-12-06 23:41:27,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:41:27,593 INFO L470 AbstractCegarLoop]: Abstraction has 1424 states and 1810 transitions. [2021-12-06 23:41:27,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.6666666666666665) internal successors, (88), 24 states have internal predecessors, (88), 0 states have call successors, (0), 0 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 23:41:27,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 1810 transitions. [2021-12-06 23:41:27,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-06 23:41:27,594 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:41:27,594 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:41:27,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2021-12-06 23:41:27,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:41:27,795 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 23:41:27,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:41:27,796 INFO L85 PathProgramCache]: Analyzing trace with hash -985900186, now seen corresponding path program 8 times [2021-12-06 23:41:27,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:41:27,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1105169431] [2021-12-06 23:41:27,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:41:27,798 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:41:27,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:41:27,800 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:41:27,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-12-06 23:41:28,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:41:28,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:41:28,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-06 23:41:28,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:41:28,054 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 23:41:28,933 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 23:41:28,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:41:33,323 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 23:41:33,323 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:41:33,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1105169431] [2021-12-06 23:41:33,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1105169431] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:41:33,324 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:41:33,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 24 [2021-12-06 23:41:33,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398349789] [2021-12-06 23:41:33,324 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:41:33,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 23:41:33,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:41:33,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 23:41:33,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2021-12-06 23:41:33,325 INFO L87 Difference]: Start difference. First operand 1424 states and 1810 transitions. Second operand has 25 states, 24 states have (on average 3.25) internal successors, (78), 25 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 23:42:48,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:42:48,724 INFO L93 Difference]: Finished difference Result 2149 states and 2696 transitions. [2021-12-06 23:42:48,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-12-06 23:42:48,726 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.25) internal successors, (78), 25 states have internal predecessors, (78), 0 states have call successors, (0), 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 23:42:48,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:42:48,733 INFO L225 Difference]: With dead ends: 2149 [2021-12-06 23:42:48,733 INFO L226 Difference]: Without dead ends: 2149 [2021-12-06 23:42:48,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4047 ImplicationChecksByTransitivity, 66.2s TimeCoverageRelationStatistics Valid=2336, Invalid=8794, Unknown=0, NotChecked=0, Total=11130 [2021-12-06 23:42:48,736 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 1176 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2021-12-06 23:42:48,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1176 Valid, 344 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 855 Invalid, 0 Unknown, 111 Unchecked, 11.8s Time] [2021-12-06 23:42:48,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2021-12-06 23:42:48,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 1986. [2021-12-06 23:42:48,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1986 states, 1984 states have (on average 1.2726814516129032) internal successors, (2525), 1985 states have internal predecessors, (2525), 0 states have call successors, (0), 0 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 23:42:48,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1986 states to 1986 states and 2525 transitions. [2021-12-06 23:42:48,762 INFO L78 Accepts]: Start accepts. Automaton has 1986 states and 2525 transitions. Word has length 57 [2021-12-06 23:42:48,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:42:48,762 INFO L470 AbstractCegarLoop]: Abstraction has 1986 states and 2525 transitions. [2021-12-06 23:42:48,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.25) internal successors, (78), 25 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 23:42:48,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1986 states and 2525 transitions. [2021-12-06 23:42:48,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-06 23:42:48,763 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:42:48,763 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 23:42:48,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-12-06 23:42:48,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:42:48,964 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 23:42:48,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:42:48,965 INFO L85 PathProgramCache]: Analyzing trace with hash 2116574164, now seen corresponding path program 9 times [2021-12-06 23:42:48,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:42:48,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886426541] [2021-12-06 23:42:48,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:42:48,967 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:42:48,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:42:48,969 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:42:48,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-12-06 23:42:49,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-12-06 23:42:49,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:42:49,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 23:42:49,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:42:49,553 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 52 proven. 35 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-06 23:42:49,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:42:50,789 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 64 proven. 23 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-06 23:42:50,789 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:42:50,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886426541] [2021-12-06 23:42:50,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1886426541] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:42:50,789 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:42:50,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 25 [2021-12-06 23:42:50,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657870449] [2021-12-06 23:42:50,789 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:42:50,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 23:42:50,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:42:50,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 23:42:50,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2021-12-06 23:42:50,790 INFO L87 Difference]: Start difference. First operand 1986 states and 2525 transitions. Second operand has 25 states, 25 states have (on average 3.04) internal successors, (76), 25 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 23:42:54,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:42:54,405 INFO L93 Difference]: Finished difference Result 2768 states and 3404 transitions. [2021-12-06 23:42:54,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 23:42:54,406 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.04) internal successors, (76), 25 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 23:42:54,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:42:54,414 INFO L225 Difference]: With dead ends: 2768 [2021-12-06 23:42:54,414 INFO L226 Difference]: Without dead ends: 2642 [2021-12-06 23:42:54,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=353, Invalid=1539, Unknown=0, NotChecked=0, Total=1892 [2021-12-06 23:42:54,415 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 626 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:42:54,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [626 Valid, 232 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-06 23:42:54,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2021-12-06 23:42:54,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 1580. [2021-12-06 23:42:54,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 1578 states have (on average 1.2344740177439797) internal successors, (1948), 1579 states have internal predecessors, (1948), 0 states have call successors, (0), 0 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 23:42:54,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 1948 transitions. [2021-12-06 23:42:54,440 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 1948 transitions. Word has length 59 [2021-12-06 23:42:54,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:42:54,441 INFO L470 AbstractCegarLoop]: Abstraction has 1580 states and 1948 transitions. [2021-12-06 23:42:54,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.04) internal successors, (76), 25 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 23:42:54,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 1948 transitions. [2021-12-06 23:42:54,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-06 23:42:54,442 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:42:54,442 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:42:54,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2021-12-06 23:42:54,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:42:54,642 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 23:42:54,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:42:54,642 INFO L85 PathProgramCache]: Analyzing trace with hash -459083040, now seen corresponding path program 3 times [2021-12-06 23:42:54,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:42:54,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974098883] [2021-12-06 23:42:54,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:42:54,643 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:42:54,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:42:54,644 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:42:54,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-12-06 23:42:54,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-06 23:42:54,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:42:54,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 23:42:54,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:42:54,888 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 44 proven. 7 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-12-06 23:42:54,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:42:55,300 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 44 proven. 7 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-12-06 23:42:55,300 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:42:55,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974098883] [2021-12-06 23:42:55,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974098883] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:42:55,300 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:42:55,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-12-06 23:42:55,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766811636] [2021-12-06 23:42:55,300 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:42:55,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 23:42:55,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:42:55,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 23:42:55,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:42:55,301 INFO L87 Difference]: Start difference. First operand 1580 states and 1948 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 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 23:42:56,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:42:56,713 INFO L93 Difference]: Finished difference Result 1544 states and 1879 transitions. [2021-12-06 23:42:56,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 23:42:56,714 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-12-06 23:42:56,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:42:56,719 INFO L225 Difference]: With dead ends: 1544 [2021-12-06 23:42:56,719 INFO L226 Difference]: Without dead ends: 1522 [2021-12-06 23:42:56,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2021-12-06 23:42:56,720 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 289 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:42:56,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 106 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 23:42:56,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2021-12-06 23:42:56,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1403. [2021-12-06 23:42:56,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1403 states, 1401 states have (on average 1.225553176302641) internal successors, (1717), 1402 states have internal predecessors, (1717), 0 states have call successors, (0), 0 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 23:42:56,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 1717 transitions. [2021-12-06 23:42:56,733 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 1717 transitions. Word has length 59 [2021-12-06 23:42:56,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:42:56,733 INFO L470 AbstractCegarLoop]: Abstraction has 1403 states and 1717 transitions. [2021-12-06 23:42:56,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 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 23:42:56,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 1717 transitions. [2021-12-06 23:42:56,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-06 23:42:56,733 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:42:56,734 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:42:56,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-12-06 23:42:56,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:42:56,935 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 23:42:56,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:42:56,936 INFO L85 PathProgramCache]: Analyzing trace with hash 509031846, now seen corresponding path program 5 times [2021-12-06 23:42:56,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:42:56,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228916457] [2021-12-06 23:42:56,938 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 23:42:56,938 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:42:56,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:42:56,940 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:42:56,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-12-06 23:42:57,343 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-12-06 23:42:57,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:42:57,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-06 23:42:57,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:42:57,367 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 23:42:58,122 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 33 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:42:58,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:43:03,060 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:43:03,061 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:43:03,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [228916457] [2021-12-06 23:43:03,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [228916457] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:43:03,061 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:43:03,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 34 [2021-12-06 23:43:03,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412743881] [2021-12-06 23:43:03,061 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:43:03,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-06 23:43:03,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:43:03,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-06 23:43:03,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=952, Unknown=0, NotChecked=0, Total=1122 [2021-12-06 23:43:03,062 INFO L87 Difference]: Start difference. First operand 1403 states and 1717 transitions. Second operand has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 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 23:43:29,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:43:29,483 INFO L93 Difference]: Finished difference Result 6750 states and 8286 transitions. [2021-12-06 23:43:29,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-12-06 23:43:29,486 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 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 61 [2021-12-06 23:43:29,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:43:29,502 INFO L225 Difference]: With dead ends: 6750 [2021-12-06 23:43:29,503 INFO L226 Difference]: Without dead ends: 6748 [2021-12-06 23:43:29,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1247 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=932, Invalid=4324, Unknown=0, NotChecked=0, Total=5256 [2021-12-06 23:43:29,504 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 972 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 1409 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 2170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 671 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:43:29,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [972 Valid, 1000 Invalid, 2170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1409 Invalid, 0 Unknown, 671 Unchecked, 10.7s Time] [2021-12-06 23:43:29,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6748 states. [2021-12-06 23:43:29,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6748 to 3323. [2021-12-06 23:43:29,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3323 states, 3321 states have (on average 1.2574525745257452) internal successors, (4176), 3322 states have internal predecessors, (4176), 0 states have call successors, (0), 0 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 23:43:29,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3323 states to 3323 states and 4176 transitions. [2021-12-06 23:43:29,558 INFO L78 Accepts]: Start accepts. Automaton has 3323 states and 4176 transitions. Word has length 61 [2021-12-06 23:43:29,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:43:29,558 INFO L470 AbstractCegarLoop]: Abstraction has 3323 states and 4176 transitions. [2021-12-06 23:43:29,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 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 23:43:29,558 INFO L276 IsEmpty]: Start isEmpty. Operand 3323 states and 4176 transitions. [2021-12-06 23:43:29,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-06 23:43:29,559 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:43:29,559 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:43:29,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-12-06 23:43:29,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:43:29,760 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 23:43:29,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:43:29,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1433042638, now seen corresponding path program 4 times [2021-12-06 23:43:29,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:43:29,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1992894977] [2021-12-06 23:43:29,763 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 23:43:29,763 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:43:29,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:43:29,765 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:43:29,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-12-06 23:43:29,892 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 23:43:29,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:43:29,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-06 23:43:29,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:43:29,919 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 23:43:30,471 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 77 proven. 26 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 23:43:30,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:43:34,032 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 23:43:34,032 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:43:34,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1992894977] [2021-12-06 23:43:34,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1992894977] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:43:34,032 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:43:34,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2021-12-06 23:43:34,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697376749] [2021-12-06 23:43:34,032 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:43:34,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 23:43:34,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:43:34,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 23:43:34,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2021-12-06 23:43:34,033 INFO L87 Difference]: Start difference. First operand 3323 states and 4176 transitions. Second operand has 25 states, 25 states have (on average 4.32) internal successors, (108), 25 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 23:43:35,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:43:35,183 INFO L93 Difference]: Finished difference Result 4509 states and 5650 transitions. [2021-12-06 23:43:35,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 23:43:35,185 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.32) internal successors, (108), 25 states have internal predecessors, (108), 0 states have call successors, (0), 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 61 [2021-12-06 23:43:35,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:43:35,190 INFO L225 Difference]: With dead ends: 4509 [2021-12-06 23:43:35,190 INFO L226 Difference]: Without dead ends: 4487 [2021-12-06 23:43:35,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=110, Invalid=592, Unknown=0, NotChecked=0, Total=702 [2021-12-06 23:43:35,191 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 59 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 23:43:35,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 186 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 216 Invalid, 0 Unknown, 15 Unchecked, 0.9s Time] [2021-12-06 23:43:35,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4487 states. [2021-12-06 23:43:35,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4487 to 4402. [2021-12-06 23:43:35,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4402 states, 4400 states have (on average 1.255) internal successors, (5522), 4401 states have internal predecessors, (5522), 0 states have call successors, (0), 0 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 23:43:35,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4402 states to 4402 states and 5522 transitions. [2021-12-06 23:43:35,246 INFO L78 Accepts]: Start accepts. Automaton has 4402 states and 5522 transitions. Word has length 61 [2021-12-06 23:43:35,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:43:35,246 INFO L470 AbstractCegarLoop]: Abstraction has 4402 states and 5522 transitions. [2021-12-06 23:43:35,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.32) internal successors, (108), 25 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 23:43:35,246 INFO L276 IsEmpty]: Start isEmpty. Operand 4402 states and 5522 transitions. [2021-12-06 23:43:35,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-06 23:43:35,247 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:43:35,247 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:43:35,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-12-06 23:43:35,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:43:35,448 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 23:43:35,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:43:35,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1593345728, now seen corresponding path program 5 times [2021-12-06 23:43:35,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:43:35,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [823226762] [2021-12-06 23:43:35,449 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 23:43:35,449 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:43:35,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:43:35,450 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:43:35,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-12-06 23:43:35,792 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-12-06 23:43:35,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:43:35,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 23:43:35,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:43:36,137 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:43:36,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 99 treesize of output 35 [2021-12-06 23:43:36,293 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 65 proven. 7 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-06 23:43:36,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:43:39,381 INFO L354 Elim1Store]: treesize reduction 1662, result has 5.4 percent of original size [2021-12-06 23:43:39,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 149 treesize of output 125 [2021-12-06 23:43:40,520 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 60 proven. 12 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-06 23:43:40,520 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:43:40,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [823226762] [2021-12-06 23:43:40,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [823226762] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:43:40,520 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:43:40,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-12-06 23:43:40,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425012693] [2021-12-06 23:43:40,520 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:43:40,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 23:43:40,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:43:40,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 23:43:40,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=238, Unknown=1, NotChecked=0, Total=306 [2021-12-06 23:43:40,521 INFO L87 Difference]: Start difference. First operand 4402 states and 5522 transitions. Second operand has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 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 23:43:41,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:43:41,485 INFO L93 Difference]: Finished difference Result 5040 states and 6271 transitions. [2021-12-06 23:43:41,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 23:43:41,486 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 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 61 [2021-12-06 23:43:41,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:43:41,491 INFO L225 Difference]: With dead ends: 5040 [2021-12-06 23:43:41,491 INFO L226 Difference]: Without dead ends: 5040 [2021-12-06 23:43:41,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=170, Invalid=479, Unknown=1, NotChecked=0, Total=650 [2021-12-06 23:43:41,492 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 125 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:43:41,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 159 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 182 Invalid, 0 Unknown, 31 Unchecked, 0.6s Time] [2021-12-06 23:43:41,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5040 states. [2021-12-06 23:43:41,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5040 to 4493. [2021-12-06 23:43:41,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4493 states, 4491 states have (on average 1.2747717657537296) internal successors, (5725), 4492 states have internal predecessors, (5725), 0 states have call successors, (0), 0 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 23:43:41,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4493 states to 4493 states and 5725 transitions. [2021-12-06 23:43:41,542 INFO L78 Accepts]: Start accepts. Automaton has 4493 states and 5725 transitions. Word has length 61 [2021-12-06 23:43:41,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:43:41,542 INFO L470 AbstractCegarLoop]: Abstraction has 4493 states and 5725 transitions. [2021-12-06 23:43:41,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 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 23:43:41,542 INFO L276 IsEmpty]: Start isEmpty. Operand 4493 states and 5725 transitions. [2021-12-06 23:43:41,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-06 23:43:41,543 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:43:41,543 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:43:41,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-12-06 23:43:41,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:43:41,744 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 23:43:41,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:43:41,745 INFO L85 PathProgramCache]: Analyzing trace with hash -555836402, now seen corresponding path program 6 times [2021-12-06 23:43:41,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:43:41,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496972634] [2021-12-06 23:43:41,747 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 23:43:41,747 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:43:41,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:43:41,748 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:43:41,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-12-06 23:43:41,991 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-12-06 23:43:41,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:43:42,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-06 23:43:42,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:43:42,021 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 23:43:42,700 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 71 proven. 36 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 23:43:42,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:43:46,291 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 23:43:46,291 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:43:46,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496972634] [2021-12-06 23:43:46,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [496972634] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:43:46,292 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:43:46,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2021-12-06 23:43:46,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199312302] [2021-12-06 23:43:46,292 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:43:46,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-06 23:43:46,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:43:46,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-06 23:43:46,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2021-12-06 23:43:46,293 INFO L87 Difference]: Start difference. First operand 4493 states and 5725 transitions. Second operand has 26 states, 26 states have (on average 4.230769230769231) 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 23:43:48,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:43:48,817 INFO L93 Difference]: Finished difference Result 5083 states and 6403 transitions. [2021-12-06 23:43:48,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 23:43:48,819 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.230769230769231) 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 61 [2021-12-06 23:43:48,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:43:48,824 INFO L225 Difference]: With dead ends: 5083 [2021-12-06 23:43:48,824 INFO L226 Difference]: Without dead ends: 5076 [2021-12-06 23:43:48,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=131, Invalid=739, Unknown=0, NotChecked=0, Total=870 [2021-12-06 23:43:48,825 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 100 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 127 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-06 23:43:48,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 302 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 292 Invalid, 0 Unknown, 127 Unchecked, 1.9s Time] [2021-12-06 23:43:48,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5076 states. [2021-12-06 23:43:48,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5076 to 4843. [2021-12-06 23:43:48,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4843 states, 4841 states have (on average 1.2728775046478) internal successors, (6162), 4842 states have internal predecessors, (6162), 0 states have call successors, (0), 0 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 23:43:48,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4843 states to 4843 states and 6162 transitions. [2021-12-06 23:43:48,874 INFO L78 Accepts]: Start accepts. Automaton has 4843 states and 6162 transitions. Word has length 61 [2021-12-06 23:43:48,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:43:48,875 INFO L470 AbstractCegarLoop]: Abstraction has 4843 states and 6162 transitions. [2021-12-06 23:43:48,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.230769230769231) 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 23:43:48,875 INFO L276 IsEmpty]: Start isEmpty. Operand 4843 states and 6162 transitions. [2021-12-06 23:43:48,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-06 23:43:48,876 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:43:48,876 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:43:48,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (49)] Ended with exit code 0 [2021-12-06 23:43:49,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:43:49,077 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 23:43:49,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:43:49,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1008871624, now seen corresponding path program 10 times [2021-12-06 23:43:49,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:43:49,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130403589] [2021-12-06 23:43:49,079 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 23:43:49,080 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:43:49,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:43:49,082 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:43:49,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-12-06 23:43:49,277 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 23:43:49,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:43:49,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-06 23:43:49,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:43:49,302 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 23:43:50,303 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 58 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:43:50,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:43:55,600 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 8 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:43:55,601 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:43:55,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130403589] [2021-12-06 23:43:55,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130403589] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:43:55,601 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:43:55,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 36 [2021-12-06 23:43:55,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8866911] [2021-12-06 23:43:55,601 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:43:55,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-12-06 23:43:55,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:43:55,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-12-06 23:43:55,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1065, Unknown=0, NotChecked=0, Total=1260 [2021-12-06 23:43:55,602 INFO L87 Difference]: Start difference. First operand 4843 states and 6162 transitions. Second operand has 36 states, 36 states have (on average 3.5) internal successors, (126), 36 states have internal predecessors, (126), 0 states have call successors, (0), 0 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 23:44:05,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:44:05,946 INFO L93 Difference]: Finished difference Result 5955 states and 7518 transitions. [2021-12-06 23:44:05,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-12-06 23:44:05,948 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.5) internal successors, (126), 36 states have internal predecessors, (126), 0 states have call successors, (0), 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 64 [2021-12-06 23:44:05,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:44:05,956 INFO L225 Difference]: With dead ends: 5955 [2021-12-06 23:44:05,956 INFO L226 Difference]: Without dead ends: 5943 [2021-12-06 23:44:05,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=512, Invalid=2350, Unknown=0, NotChecked=0, Total=2862 [2021-12-06 23:44:05,956 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 210 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 214 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:44:05,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 650 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 660 Invalid, 0 Unknown, 214 Unchecked, 3.2s Time] [2021-12-06 23:44:05,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5943 states. [2021-12-06 23:44:06,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5943 to 4996. [2021-12-06 23:44:06,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4996 states, 4994 states have (on average 1.2713255907088505) internal successors, (6349), 4995 states have internal predecessors, (6349), 0 states have call successors, (0), 0 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 23:44:06,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4996 states to 4996 states and 6349 transitions. [2021-12-06 23:44:06,011 INFO L78 Accepts]: Start accepts. Automaton has 4996 states and 6349 transitions. Word has length 64 [2021-12-06 23:44:06,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:44:06,012 INFO L470 AbstractCegarLoop]: Abstraction has 4996 states and 6349 transitions. [2021-12-06 23:44:06,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.5) internal successors, (126), 36 states have internal predecessors, (126), 0 states have call successors, (0), 0 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 23:44:06,012 INFO L276 IsEmpty]: Start isEmpty. Operand 4996 states and 6349 transitions. [2021-12-06 23:44:06,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-06 23:44:06,013 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:44:06,013 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 1, 1, 1, 1, 1] [2021-12-06 23:44:06,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (50)] Ended with exit code 0 [2021-12-06 23:44:06,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:44:06,214 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-06 23:44:06,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:44:06,214 INFO L85 PathProgramCache]: Analyzing trace with hash 58542645, now seen corresponding path program 4 times [2021-12-06 23:44:06,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:44:06,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2040844141] [2021-12-06 23:44:06,215 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 23:44:06,215 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:44:06,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:44:06,217 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:44:06,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-12-06 23:44:06,316 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 23:44:06,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:44:06,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 23:44:06,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:44:06,335 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 23:44:07,615 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 23:44:07,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:44:18,007 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 23:44:18,008 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:44:18,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2040844141] [2021-12-06 23:44:18,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2040844141] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:44:18,008 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:44:18,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 45 [2021-12-06 23:44:18,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365564507] [2021-12-06 23:44:18,008 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:44:18,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-12-06 23:44:18,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:44:18,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-12-06 23:44:18,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=545, Invalid=1525, Unknown=0, NotChecked=0, Total=2070 [2021-12-06 23:44:18,009 INFO L87 Difference]: Start difference. First operand 4996 states and 6349 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 23:44:30,643 WARN L227 SmtUtils]: Spent 8.29s 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 23:44:32,807 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:44:34,810 WARN L534 Checker$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 23:44:36,869 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:44:38,335 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:44:47,089 WARN L227 SmtUtils]: Spent 8.27s 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 23:45:04,072 WARN L227 SmtUtils]: Spent 16.35s 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 23:45:06,562 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:45:08,565 WARN L534 Checker$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 23:45:10,634 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:45:17,882 WARN L227 SmtUtils]: Spent 5.92s on a formula simplification that was a NOOP. DAG size: 157 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 23:45:33,816 WARN L227 SmtUtils]: Spent 15.04s on a formula simplification. DAG size of input: 152 DAG size of output: 152 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 23:45:36,402 WARN L534 Checker$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 23:45:38,405 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:45:40,408 WARN L534 Checker$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 23:45:57,733 WARN L227 SmtUtils]: Spent 11.44s 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 23:46:00,414 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:46:02,417 WARN L534 Checker$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 23:46:04,462 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:46:10,481 WARN L227 SmtUtils]: Spent 5.32s on a formula simplification that was a NOOP. DAG size: 136 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 23:46:20,441 WARN L227 SmtUtils]: Spent 9.15s on a formula simplification. DAG size of input: 131 DAG size of output: 131 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 23:46:23,302 WARN L534 Checker$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 23:46:25,304 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:46:27,307 WARN L534 Checker$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 23:46:39,153 WARN L227 SmtUtils]: Spent 7.26s 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 23:46:41,555 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:46:43,558 WARN L534 Checker$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 23:46:45,561 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:46:54,189 WARN L227 SmtUtils]: Spent 5.28s on a formula simplification. DAG size of input: 109 DAG size of output: 109 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 23:46:56,683 WARN L534 Checker$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 23:46:58,685 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:47:00,723 WARN L534 Checker$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 23:47:10,467 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:47:12,550 WARN L534 Checker$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 23:47:20,716 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:47:22,719 WARN L534 Checker$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 23:47:39,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:47:39,675 INFO L93 Difference]: Finished difference Result 35986 states and 45592 transitions. [2021-12-06 23:47:39,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-12-06 23:47:39,678 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 23:47:39,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:47:39,717 INFO L225 Difference]: With dead ends: 35986 [2021-12-06 23:47:39,718 INFO L226 Difference]: Without dead ends: 35986 [2021-12-06 23:47:39,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2441 ImplicationChecksByTransitivity, 143.8s TimeCoverageRelationStatistics Valid=2223, Invalid=5259, Unknown=0, NotChecked=0, Total=7482 [2021-12-06 23:47:39,718 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 4591 mSDsluCounter, 2590 mSDsCounter, 0 mSdLazyCounter, 3232 mSolverCounterSat, 172 mSolverCounterUnsat, 25 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4591 SdHoareTripleChecker+Valid, 2726 SdHoareTripleChecker+Invalid, 3627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 3232 IncrementalHoareTripleChecker+Invalid, 25 IncrementalHoareTripleChecker+Unknown, 198 IncrementalHoareTripleChecker+Unchecked, 64.9s IncrementalHoareTripleChecker+Time [2021-12-06 23:47:39,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4591 Valid, 2726 Invalid, 3627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 3232 Invalid, 25 Unknown, 198 Unchecked, 64.9s Time] [2021-12-06 23:47:39,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35986 states. [2021-12-06 23:47:40,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35986 to 5060. [2021-12-06 23:47:40,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5060 states, 5058 states have (on average 1.271055753262159) internal successors, (6429), 5059 states have internal predecessors, (6429), 0 states have call successors, (0), 0 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 23:47:40,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5060 states to 5060 states and 6429 transitions. [2021-12-06 23:47:40,028 INFO L78 Accepts]: Start accepts. Automaton has 5060 states and 6429 transitions. Word has length 66 [2021-12-06 23:47:40,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:47:40,028 INFO L470 AbstractCegarLoop]: Abstraction has 5060 states and 6429 transitions. [2021-12-06 23:47:40,028 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 23:47:40,028 INFO L276 IsEmpty]: Start isEmpty. Operand 5060 states and 6429 transitions. [2021-12-06 23:47:40,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-06 23:47:40,030 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:47:40,030 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:47:40,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-12-06 23:47:40,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:47:40,231 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 23:47:40,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:47:40,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1463771587, now seen corresponding path program 2 times [2021-12-06 23:47:40,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:47:40,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693813960] [2021-12-06 23:47:40,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:47:40,235 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:47:40,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:47:40,237 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:47:40,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-12-06 23:47:40,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:47:40,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:47:40,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-06 23:47:40,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:47:40,489 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 23:47:41,658 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 23:47:41,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:47:48,157 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 23:47:48,157 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:47:48,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [693813960] [2021-12-06 23:47:48,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [693813960] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:47:48,158 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:47:48,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 27 [2021-12-06 23:47:48,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814312867] [2021-12-06 23:47:48,158 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:47:48,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 23:47:48,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:47:48,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 23:47:48,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=600, Unknown=0, NotChecked=0, Total=756 [2021-12-06 23:47:48,159 INFO L87 Difference]: Start difference. First operand 5060 states and 6429 transitions. Second operand has 28 states, 27 states have (on average 4.0) internal successors, (108), 28 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 23:48:39,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:48:39,480 INFO L93 Difference]: Finished difference Result 5931 states and 7500 transitions. [2021-12-06 23:48:39,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-12-06 23:48:39,482 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 4.0) internal successors, (108), 28 states have internal predecessors, (108), 0 states have call successors, (0), 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 67 [2021-12-06 23:48:39,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:48:39,485 INFO L225 Difference]: With dead ends: 5931 [2021-12-06 23:48:39,485 INFO L226 Difference]: Without dead ends: 5931 [2021-12-06 23:48:39,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 104 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2888 ImplicationChecksByTransitivity, 41.6s TimeCoverageRelationStatistics Valid=2045, Invalid=6511, Unknown=0, NotChecked=0, Total=8556 [2021-12-06 23:48:39,486 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 848 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 1599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 186 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:48:39,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [848 Valid, 575 Invalid, 1599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1283 Invalid, 0 Unknown, 186 Unchecked, 13.3s Time] [2021-12-06 23:48:39,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5931 states. [2021-12-06 23:48:39,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5931 to 5512. [2021-12-06 23:48:39,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5512 states, 5510 states have (on average 1.2695099818511797) internal successors, (6995), 5511 states have internal predecessors, (6995), 0 states have call successors, (0), 0 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 23:48:39,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5512 states to 5512 states and 6995 transitions. [2021-12-06 23:48:39,538 INFO L78 Accepts]: Start accepts. Automaton has 5512 states and 6995 transitions. Word has length 67 [2021-12-06 23:48:39,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:48:39,539 INFO L470 AbstractCegarLoop]: Abstraction has 5512 states and 6995 transitions. [2021-12-06 23:48:39,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 4.0) internal successors, (108), 28 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 23:48:39,539 INFO L276 IsEmpty]: Start isEmpty. Operand 5512 states and 6995 transitions. [2021-12-06 23:48:39,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-06 23:48:39,540 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:48:39,540 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:48:39,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (52)] Ended with exit code 0 [2021-12-06 23:48:39,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:48:39,741 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 23:48:39,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:48:39,742 INFO L85 PathProgramCache]: Analyzing trace with hash -834373609, now seen corresponding path program 7 times [2021-12-06 23:48:39,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:48:39,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [901964554] [2021-12-06 23:48:39,744 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 23:48:39,744 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:48:39,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:48:39,746 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:48:39,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-12-06 23:48:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:48:39,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-06 23:48:39,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:48:39,909 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 23:48:40,610 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 83 proven. 26 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 23:48:40,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:48:44,672 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 23:48:44,672 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:48:44,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [901964554] [2021-12-06 23:48:44,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [901964554] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:48:44,672 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:48:44,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2021-12-06 23:48:44,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668943286] [2021-12-06 23:48:44,673 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:48:44,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 23:48:44,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:48:44,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 23:48:44,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2021-12-06 23:48:44,673 INFO L87 Difference]: Start difference. First operand 5512 states and 6995 transitions. Second operand has 25 states, 25 states have (on average 4.8) internal successors, (120), 25 states have internal predecessors, (120), 0 states have call successors, (0), 0 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 23:48:46,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:48:46,557 INFO L93 Difference]: Finished difference Result 5690 states and 7231 transitions. [2021-12-06 23:48:46,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 23:48:46,559 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.8) internal successors, (120), 25 states have internal predecessors, (120), 0 states have call successors, (0), 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 67 [2021-12-06 23:48:46,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:48:46,563 INFO L225 Difference]: With dead ends: 5690 [2021-12-06 23:48:46,563 INFO L226 Difference]: Without dead ends: 5680 [2021-12-06 23:48:46,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 23:48:46,563 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 43 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 23:48:46,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 263 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 193 Invalid, 0 Unknown, 55 Unchecked, 0.9s Time] [2021-12-06 23:48:46,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5680 states. [2021-12-06 23:48:46,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5680 to 5542. [2021-12-06 23:48:46,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5542 states, 5540 states have (on average 1.26985559566787) internal successors, (7035), 5541 states have internal predecessors, (7035), 0 states have call successors, (0), 0 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 23:48:46,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5542 states to 5542 states and 7035 transitions. [2021-12-06 23:48:46,615 INFO L78 Accepts]: Start accepts. Automaton has 5542 states and 7035 transitions. Word has length 67 [2021-12-06 23:48:46,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:48:46,615 INFO L470 AbstractCegarLoop]: Abstraction has 5542 states and 7035 transitions. [2021-12-06 23:48:46,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.8) internal successors, (120), 25 states have internal predecessors, (120), 0 states have call successors, (0), 0 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 23:48:46,615 INFO L276 IsEmpty]: Start isEmpty. Operand 5542 states and 7035 transitions. [2021-12-06 23:48:46,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-06 23:48:46,616 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:48:46,616 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:48:46,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (53)] Ended with exit code 0 [2021-12-06 23:48:46,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:48:46,818 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 23:48:46,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:48:46,819 INFO L85 PathProgramCache]: Analyzing trace with hash 203135717, now seen corresponding path program 8 times [2021-12-06 23:48:46,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:48:46,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1930407342] [2021-12-06 23:48:46,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:48:46,821 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:48:46,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:48:46,823 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:48:46,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-12-06 23:48:46,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:48:46,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:48:47,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-06 23:48:47,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:48:47,019 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 23:48:47,736 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 83 proven. 26 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 23:48:47,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:48:51,493 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 23:48:51,493 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:48:51,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1930407342] [2021-12-06 23:48:51,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1930407342] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:48:51,493 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:48:51,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2021-12-06 23:48:51,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604510643] [2021-12-06 23:48:51,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:48:51,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 23:48:51,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:48:51,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 23:48:51,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2021-12-06 23:48:51,494 INFO L87 Difference]: Start difference. First operand 5542 states and 7035 transitions. Second operand has 25 states, 25 states have (on average 4.8) internal successors, (120), 25 states have internal predecessors, (120), 0 states have call successors, (0), 0 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 23:48:52,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:48:52,766 INFO L93 Difference]: Finished difference Result 5508 states and 6978 transitions. [2021-12-06 23:48:52,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 23:48:52,768 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.8) internal successors, (120), 25 states have internal predecessors, (120), 0 states have call successors, (0), 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 67 [2021-12-06 23:48:52,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:48:52,771 INFO L225 Difference]: With dead ends: 5508 [2021-12-06 23:48:52,771 INFO L226 Difference]: Without dead ends: 5492 [2021-12-06 23:48:52,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=110, Invalid=592, Unknown=0, NotChecked=0, Total=702 [2021-12-06 23:48:52,772 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 64 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 94 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:48:52,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 229 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 209 Invalid, 0 Unknown, 94 Unchecked, 1.0s Time] [2021-12-06 23:48:52,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5492 states. [2021-12-06 23:48:52,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5492 to 5264. [2021-12-06 23:48:52,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5264 states, 5262 states have (on average 1.27309007981756) internal successors, (6699), 5263 states have internal predecessors, (6699), 0 states have call successors, (0), 0 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 23:48:52,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5264 states to 5264 states and 6699 transitions. [2021-12-06 23:48:52,822 INFO L78 Accepts]: Start accepts. Automaton has 5264 states and 6699 transitions. Word has length 67 [2021-12-06 23:48:52,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:48:52,822 INFO L470 AbstractCegarLoop]: Abstraction has 5264 states and 6699 transitions. [2021-12-06 23:48:52,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.8) internal successors, (120), 25 states have internal predecessors, (120), 0 states have call successors, (0), 0 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 23:48:52,822 INFO L276 IsEmpty]: Start isEmpty. Operand 5264 states and 6699 transitions. [2021-12-06 23:48:52,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 23:48:52,823 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:48:52,823 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 23:48:52,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (54)] Ended with exit code 0 [2021-12-06 23:48:53,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:48:53,025 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 23:48:53,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:48:53,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1388495173, now seen corresponding path program 11 times [2021-12-06 23:48:53,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:48:53,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395718292] [2021-12-06 23:48:53,028 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 23:48:53,028 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:48:53,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:48:53,030 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:48:53,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-12-06 23:48:53,485 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-12-06 23:48:53,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:48:53,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-06 23:48:53,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:48:53,520 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 23:48:54,446 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 75 proven. 63 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-06 23:48:54,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:49:04,460 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:49:04,460 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:49:04,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [395718292] [2021-12-06 23:49:04,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [395718292] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:49:04,460 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:49:04,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 24] total 39 [2021-12-06 23:49:04,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339584856] [2021-12-06 23:49:04,460 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:49:04,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-12-06 23:49:04,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:49:04,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-12-06 23:49:04,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1292, Unknown=0, NotChecked=0, Total=1482 [2021-12-06 23:49:04,461 INFO L87 Difference]: Start difference. First operand 5264 states and 6699 transitions. Second operand has 39 states, 39 states have (on average 3.0) internal successors, (117), 39 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 23:49:12,205 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 23:49:53,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:49:53,470 INFO L93 Difference]: Finished difference Result 11325 states and 14265 transitions. [2021-12-06 23:49:53,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-12-06 23:49:53,472 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.0) internal successors, (117), 39 states have internal predecessors, (117), 0 states have call successors, (0), 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 23:49:53,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:49:53,479 INFO L225 Difference]: With dead ends: 11325 [2021-12-06 23:49:53,479 INFO L226 Difference]: Without dead ends: 11325 [2021-12-06 23:49:53,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2466 ImplicationChecksByTransitivity, 33.9s TimeCoverageRelationStatistics Valid=1766, Invalid=8334, Unknown=0, NotChecked=0, Total=10100 [2021-12-06 23:49:53,480 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 1519 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 2846 mSolverCounterSat, 185 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1519 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 3032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 2846 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:49:53,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1519 Valid, 1189 Invalid, 3032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 2846 Invalid, 1 Unknown, 0 Unchecked, 22.3s Time] [2021-12-06 23:49:53,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11325 states. [2021-12-06 23:49:53,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11325 to 9821. [2021-12-06 23:49:53,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9821 states, 9819 states have (on average 1.2759955188919443) internal successors, (12529), 9820 states have internal predecessors, (12529), 0 states have call successors, (0), 0 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 23:49:53,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9821 states to 9821 states and 12529 transitions. [2021-12-06 23:49:53,589 INFO L78 Accepts]: Start accepts. Automaton has 9821 states and 12529 transitions. Word has length 68 [2021-12-06 23:49:53,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:49:53,589 INFO L470 AbstractCegarLoop]: Abstraction has 9821 states and 12529 transitions. [2021-12-06 23:49:53,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.0) internal successors, (117), 39 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 23:49:53,589 INFO L276 IsEmpty]: Start isEmpty. Operand 9821 states and 12529 transitions. [2021-12-06 23:49:53,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-06 23:49:53,590 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:49:53,590 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 6, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:49:53,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-12-06 23:49:53,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:49:53,792 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 23:49:53,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:49:53,793 INFO L85 PathProgramCache]: Analyzing trace with hash -463465663, now seen corresponding path program 9 times [2021-12-06 23:49:53,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:49:53,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655000483] [2021-12-06 23:49:53,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:49:53,795 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:49:53,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:49:53,797 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:49:53,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-12-06 23:49:54,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-12-06 23:49:54,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:49:54,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-06 23:49:54,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:49:54,061 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 23:49:55,315 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 34 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:49:55,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:50:01,225 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 8 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:50:01,225 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:50:01,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655000483] [2021-12-06 23:50:01,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655000483] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:50:01,225 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:50:01,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 37 [2021-12-06 23:50:01,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938199627] [2021-12-06 23:50:01,225 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:50:01,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-12-06 23:50:01,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:50:01,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-12-06 23:50:01,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1122, Unknown=0, NotChecked=0, Total=1332 [2021-12-06 23:50:01,226 INFO L87 Difference]: Start difference. First operand 9821 states and 12529 transitions. Second operand has 37 states, 37 states have (on average 3.72972972972973) internal successors, (138), 37 states have internal predecessors, (138), 0 states have call successors, (0), 0 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 23:50:24,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:50:24,604 INFO L93 Difference]: Finished difference Result 12142 states and 15291 transitions. [2021-12-06 23:50:24,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-12-06 23:50:24,605 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.72972972972973) internal successors, (138), 37 states have internal predecessors, (138), 0 states have call successors, (0), 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 23:50:24,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:50:24,613 INFO L225 Difference]: With dead ends: 12142 [2021-12-06 23:50:24,613 INFO L226 Difference]: Without dead ends: 12106 [2021-12-06 23:50:24,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 112 SyntacticMatches, 8 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1618 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=783, Invalid=4187, Unknown=0, NotChecked=0, Total=4970 [2021-12-06 23:50:24,614 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 360 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 2004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 902 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:50:24,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 1012 Invalid, 2004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1075 Invalid, 0 Unknown, 902 Unchecked, 9.7s Time] [2021-12-06 23:50:24,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12106 states. [2021-12-06 23:50:24,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12106 to 9524. [2021-12-06 23:50:24,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9524 states, 9522 states have (on average 1.2731568998109641) internal successors, (12123), 9523 states have internal predecessors, (12123), 0 states have call successors, (0), 0 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 23:50:24,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9524 states to 9524 states and 12123 transitions. [2021-12-06 23:50:24,716 INFO L78 Accepts]: Start accepts. Automaton has 9524 states and 12123 transitions. Word has length 70 [2021-12-06 23:50:24,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:50:24,716 INFO L470 AbstractCegarLoop]: Abstraction has 9524 states and 12123 transitions. [2021-12-06 23:50:24,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.72972972972973) internal successors, (138), 37 states have internal predecessors, (138), 0 states have call successors, (0), 0 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 23:50:24,716 INFO L276 IsEmpty]: Start isEmpty. Operand 9524 states and 12123 transitions. [2021-12-06 23:50:24,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-06 23:50:24,718 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:50:24,718 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 6, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:50:24,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (56)] Ended with exit code 0 [2021-12-06 23:50:24,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:50:24,918 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 23:50:24,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:50:24,920 INFO L85 PathProgramCache]: Analyzing trace with hash 445472399, now seen corresponding path program 10 times [2021-12-06 23:50:24,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:50:24,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228703766] [2021-12-06 23:50:24,921 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 23:50:24,922 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:50:24,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:50:24,924 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:50:24,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-12-06 23:50:25,091 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 23:50:25,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:50:25,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-06 23:50:25,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:50:25,112 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 23:50:26,197 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 58 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:50:26,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:50:31,731 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 8 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:50:31,731 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:50:31,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [228703766] [2021-12-06 23:50:31,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [228703766] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:50:31,731 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:50:31,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 36 [2021-12-06 23:50:31,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927482568] [2021-12-06 23:50:31,731 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:50:31,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-12-06 23:50:31,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:50:31,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-12-06 23:50:31,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1065, Unknown=0, NotChecked=0, Total=1260 [2021-12-06 23:50:31,732 INFO L87 Difference]: Start difference. First operand 9524 states and 12123 transitions. Second operand has 36 states, 36 states have (on average 3.8333333333333335) internal successors, (138), 36 states have internal predecessors, (138), 0 states have call successors, (0), 0 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 23:50:48,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:50:48,378 INFO L93 Difference]: Finished difference Result 14962 states and 18697 transitions. [2021-12-06 23:50:48,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-12-06 23:50:48,380 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.8333333333333335) internal successors, (138), 36 states have internal predecessors, (138), 0 states have call successors, (0), 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 23:50:48,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:50:48,390 INFO L225 Difference]: With dead ends: 14962 [2021-12-06 23:50:48,391 INFO L226 Difference]: Without dead ends: 14898 [2021-12-06 23:50:48,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1025 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=664, Invalid=3118, Unknown=0, NotChecked=0, Total=3782 [2021-12-06 23:50:48,391 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 610 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 1733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 633 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:50:48,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [610 Valid, 802 Invalid, 1733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1034 Invalid, 0 Unknown, 633 Unchecked, 7.3s Time] [2021-12-06 23:50:48,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14898 states. [2021-12-06 23:50:48,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14898 to 11761. [2021-12-06 23:50:48,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11761 states, 11759 states have (on average 1.270686282847181) internal successors, (14942), 11760 states have internal predecessors, (14942), 0 states have call successors, (0), 0 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 23:50:48,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11761 states to 11761 states and 14942 transitions. [2021-12-06 23:50:48,530 INFO L78 Accepts]: Start accepts. Automaton has 11761 states and 14942 transitions. Word has length 70 [2021-12-06 23:50:48,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:50:48,531 INFO L470 AbstractCegarLoop]: Abstraction has 11761 states and 14942 transitions. [2021-12-06 23:50:48,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.8333333333333335) internal successors, (138), 36 states have internal predecessors, (138), 0 states have call successors, (0), 0 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 23:50:48,531 INFO L276 IsEmpty]: Start isEmpty. Operand 11761 states and 14942 transitions. [2021-12-06 23:50:48,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-06 23:50:48,532 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:50:48,532 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 23:50:48,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (57)] Ended with exit code 0 [2021-12-06 23:50:48,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:50:48,734 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 23:50:48,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:50:48,735 INFO L85 PathProgramCache]: Analyzing trace with hash 313896113, now seen corresponding path program 12 times [2021-12-06 23:50:48,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:50:48,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240404676] [2021-12-06 23:50:48,736 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 23:50:48,737 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:50:48,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:50:48,739 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:50:48,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-12-06 23:50:49,003 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-12-06 23:50:49,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:50:49,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-06 23:50:49,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:50:49,031 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 23:50:50,215 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-12-06 23:50:50,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:50:55,531 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-12-06 23:50:55,531 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:50:55,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [240404676] [2021-12-06 23:50:55,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [240404676] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:50:55,532 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:50:55,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 24 [2021-12-06 23:50:55,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405588229] [2021-12-06 23:50:55,532 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:50:55,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 23:50:55,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:50:55,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 23:50:55,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2021-12-06 23:50:55,533 INFO L87 Difference]: Start difference. First operand 11761 states and 14942 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 23:51:40,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:51:40,027 INFO L93 Difference]: Finished difference Result 15689 states and 19766 transitions. [2021-12-06 23:51:40,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-12-06 23:51:40,030 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 73 [2021-12-06 23:51:40,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:51:40,041 INFO L225 Difference]: With dead ends: 15689 [2021-12-06 23:51:40,041 INFO L226 Difference]: Without dead ends: 15689 [2021-12-06 23:51:40,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2328 ImplicationChecksByTransitivity, 40.8s TimeCoverageRelationStatistics Valid=1564, Invalid=5408, Unknown=0, NotChecked=0, Total=6972 [2021-12-06 23:51:40,041 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 890 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 177 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:51:40,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [890 Valid, 293 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 602 Invalid, 0 Unknown, 177 Unchecked, 6.4s Time] [2021-12-06 23:51:40,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15689 states. [2021-12-06 23:51:40,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15689 to 13366. [2021-12-06 23:51:40,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13366 states, 13364 states have (on average 1.2688566297515713) internal successors, (16957), 13365 states have internal predecessors, (16957), 0 states have call successors, (0), 0 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 23:51:40,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13366 states to 13366 states and 16957 transitions. [2021-12-06 23:51:40,179 INFO L78 Accepts]: Start accepts. Automaton has 13366 states and 16957 transitions. Word has length 73 [2021-12-06 23:51:40,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:51:40,179 INFO L470 AbstractCegarLoop]: Abstraction has 13366 states and 16957 transitions. [2021-12-06 23:51:40,179 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 23:51:40,179 INFO L276 IsEmpty]: Start isEmpty. Operand 13366 states and 16957 transitions. [2021-12-06 23:51:40,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-06 23:51:40,181 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:51:40,181 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 7, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:51:40,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (58)] Ended with exit code 0 [2021-12-06 23:51:40,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:51:40,382 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 23:51:40,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:51:40,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1077930382, now seen corresponding path program 11 times [2021-12-06 23:51:40,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:51:40,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311783477] [2021-12-06 23:51:40,386 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 23:51:40,386 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:51:40,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:51:40,388 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:51:40,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-12-06 23:51:40,577 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-12-06 23:51:40,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:51:40,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 23:51:40,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:51:41,084 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 155 proven. 16 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-06 23:51:41,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:51:44,499 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 155 proven. 16 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-06 23:51:44,499 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:51:44,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311783477] [2021-12-06 23:51:44,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1311783477] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:51:44,499 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:51:44,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 21 [2021-12-06 23:51:44,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524079305] [2021-12-06 23:51:44,499 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:51:44,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-06 23:51:44,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:51:44,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-06 23:51:44,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2021-12-06 23:51:44,500 INFO L87 Difference]: Start difference. First operand 13366 states and 16957 transitions. Second operand has 21 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 21 states have internal predecessors, (74), 0 states have call successors, (0), 0 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 23:51:46,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:51:46,426 INFO L93 Difference]: Finished difference Result 14834 states and 18149 transitions. [2021-12-06 23:51:46,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 23:51:46,428 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 21 states have internal predecessors, (74), 0 states have call successors, (0), 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 23:51:46,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:51:46,436 INFO L225 Difference]: With dead ends: 14834 [2021-12-06 23:51:46,436 INFO L226 Difference]: Without dead ends: 12774 [2021-12-06 23:51:46,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2021-12-06 23:51:46,437 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 167 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:51:46,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 240 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 331 Invalid, 0 Unknown, 26 Unchecked, 1.4s Time] [2021-12-06 23:51:46,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12774 states. [2021-12-06 23:51:46,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12774 to 12481. [2021-12-06 23:51:46,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12481 states, 12479 states have (on average 1.2486577450116194) internal successors, (15582), 12480 states have internal predecessors, (15582), 0 states have call successors, (0), 0 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 23:51:46,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12481 states to 12481 states and 15582 transitions. [2021-12-06 23:51:46,564 INFO L78 Accepts]: Start accepts. Automaton has 12481 states and 15582 transitions. Word has length 77 [2021-12-06 23:51:46,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:51:46,564 INFO L470 AbstractCegarLoop]: Abstraction has 12481 states and 15582 transitions. [2021-12-06 23:51:46,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 21 states have internal predecessors, (74), 0 states have call successors, (0), 0 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 23:51:46,564 INFO L276 IsEmpty]: Start isEmpty. Operand 12481 states and 15582 transitions. [2021-12-06 23:51:46,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-06 23:51:46,566 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:51:46,566 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 7, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:51:46,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-12-06 23:51:46,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:51:46,767 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 23:51:46,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:51:46,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1238407318, now seen corresponding path program 12 times [2021-12-06 23:51:46,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:51:46,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655861055] [2021-12-06 23:51:46,770 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 23:51:46,771 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:51:46,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:51:46,773 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:51:46,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-12-06 23:51:47,201 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-12-06 23:51:47,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:51:47,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-06 23:51:47,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:51:47,228 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 23:51:47,756 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 17 treesize of output 13 [2021-12-06 23:51:48,696 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 59 proven. 159 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-06 23:51:48,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:51:52,740 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 68 proven. 150 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-06 23:51:52,740 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:51:52,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655861055] [2021-12-06 23:51:52,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1655861055] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:51:52,740 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:51:52,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 31 [2021-12-06 23:51:52,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356744626] [2021-12-06 23:51:52,740 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:51:52,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-06 23:51:52,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:51:52,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-06 23:51:52,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=741, Unknown=0, NotChecked=0, Total=930 [2021-12-06 23:51:52,741 INFO L87 Difference]: Start difference. First operand 12481 states and 15582 transitions. Second operand has 31 states, 31 states have (on average 4.064516129032258) internal successors, (126), 31 states have internal predecessors, (126), 0 states have call successors, (0), 0 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 23:52:00,827 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 23:52:28,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:52:28,881 INFO L93 Difference]: Finished difference Result 19090 states and 23726 transitions. [2021-12-06 23:52:28,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-12-06 23:52:28,883 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.064516129032258) internal successors, (126), 31 states have internal predecessors, (126), 0 states have call successors, (0), 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 89 [2021-12-06 23:52:28,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:52:28,893 INFO L225 Difference]: With dead ends: 19090 [2021-12-06 23:52:28,894 INFO L226 Difference]: Without dead ends: 17750 [2021-12-06 23:52:28,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2171 ImplicationChecksByTransitivity, 28.7s TimeCoverageRelationStatistics Valid=1403, Invalid=6253, Unknown=0, NotChecked=0, Total=7656 [2021-12-06 23:52:28,894 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 804 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:52:28,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [804 Valid, 327 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2021-12-06 23:52:28,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17750 states. [2021-12-06 23:52:29,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17750 to 12148. [2021-12-06 23:52:29,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12148 states, 12146 states have (on average 1.2575333443108843) internal successors, (15274), 12147 states have internal predecessors, (15274), 0 states have call successors, (0), 0 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 23:52:29,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12148 states to 12148 states and 15274 transitions. [2021-12-06 23:52:29,032 INFO L78 Accepts]: Start accepts. Automaton has 12148 states and 15274 transitions. Word has length 89 [2021-12-06 23:52:29,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:52:29,032 INFO L470 AbstractCegarLoop]: Abstraction has 12148 states and 15274 transitions. [2021-12-06 23:52:29,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.064516129032258) internal successors, (126), 31 states have internal predecessors, (126), 0 states have call successors, (0), 0 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 23:52:29,032 INFO L276 IsEmpty]: Start isEmpty. Operand 12148 states and 15274 transitions. [2021-12-06 23:52:29,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-06 23:52:29,034 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:52:29,034 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:52:29,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (60)] Ended with exit code 0 [2021-12-06 23:52:29,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:52:29,235 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 23:52:29,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:52:29,236 INFO L85 PathProgramCache]: Analyzing trace with hash -634526113, now seen corresponding path program 13 times [2021-12-06 23:52:29,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:52:29,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [789540803] [2021-12-06 23:52:29,238 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 23:52:29,239 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:52:29,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:52:29,241 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:52:29,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7334ed65-8e5f-4566-aaba-97341a6b2c02/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-12-06 23:52:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:52:29,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-06 23:52:29,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:52:29,590 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 23:52:30,801 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 301 proven. 138 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-06 23:52:30,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:52:38,738 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 0 proven. 454 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 23:52:38,738 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:52:38,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [789540803] [2021-12-06 23:52:38,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [789540803] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:52:38,739 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:52:38,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21] total 38 [2021-12-06 23:52:38,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978002790] [2021-12-06 23:52:38,739 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:52:38,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-12-06 23:52:38,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:52:38,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-12-06 23:52:38,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1222, Unknown=0, NotChecked=0, Total=1406 [2021-12-06 23:52:38,739 INFO L87 Difference]: Start difference. First operand 12148 states and 15274 transitions. Second operand has 38 states, 38 states have (on average 4.078947368421052) internal successors, (155), 38 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)