./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF --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 9e43379b3f2624d77eec1084820c7c07499f5ec4432514ab066d4f5cf96eeebc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:20:53,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:20:53,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:20:53,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:20:53,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:20:53,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:20:53,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:20:53,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:20:53,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:20:53,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:20:53,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:20:53,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:20:53,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:20:53,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:20:53,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:20:53,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:20:53,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:20:53,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:20:53,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:20:53,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:20:53,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:20:53,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:20:53,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:20:53,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:20:53,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:20:53,671 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:20:53,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:20:53,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:20:53,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:20:53,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:20:53,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:20:53,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:20:53,680 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:20:53,681 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:20:53,683 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:20:53,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:20:53,684 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:20:53,684 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:20:53,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:20:53,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:20:53,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:20:53,687 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-20 07:20:53,737 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:20:53,737 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:20:53,738 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:20:53,738 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:20:53,745 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:20:53,745 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:20:53,746 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:20:53,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:20:53,747 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:20:53,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:20:53,748 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:20:53,748 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 07:20:53,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:20:53,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:20:53,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:20:53,749 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 07:20:53,749 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 07:20:53,750 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 07:20:53,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:20:53,750 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 07:20:53,750 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:20:53,750 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:20:53,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:20:53,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:20:53,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:20:53,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:20:53,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:20:53,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:20:53,752 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:20:53,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:20:53,754 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:20:53,754 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_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e43379b3f2624d77eec1084820c7c07499f5ec4432514ab066d4f5cf96eeebc [2021-11-20 07:20:54,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:20:54,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:20:54,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:20:54,092 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:20:54,092 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:20:54,094 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i [2021-11-20 07:20:54,167 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/data/1eabf89a9/92ba7761c5ed496689e2ab99ccc4468a/FLAGf9b4ca7d3 [2021-11-20 07:20:54,801 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:20:54,802 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i [2021-11-20 07:20:54,829 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/data/1eabf89a9/92ba7761c5ed496689e2ab99ccc4468a/FLAGf9b4ca7d3 [2021-11-20 07:20:55,026 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/data/1eabf89a9/92ba7761c5ed496689e2ab99ccc4468a [2021-11-20 07:20:55,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:20:55,030 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:20:55,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:20:55,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:20:55,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:20:55,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:20:55" (1/1) ... [2021-11-20 07:20:55,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b30ab19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:20:55, skipping insertion in model container [2021-11-20 07:20:55,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:20:55" (1/1) ... [2021-11-20 07:20:55,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:20:55,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:20:55,579 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[33021,33034] [2021-11-20 07:20:55,734 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44124,44137] [2021-11-20 07:20:55,735 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44245,44258] [2021-11-20 07:20:55,754 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:20:55,764 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-20 07:20:55,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4b7313be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:20:55, skipping insertion in model container [2021-11-20 07:20:55,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:20:55,766 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-20 07:20:55,768 INFO L158 Benchmark]: Toolchain (without parser) took 737.08ms. Allocated memory was 94.4MB in the beginning and 117.4MB in the end (delta: 23.1MB). Free memory was 63.5MB in the beginning and 82.5MB in the end (delta: -19.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 07:20:55,769 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 94.4MB. Free memory is still 49.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:20:55,770 INFO L158 Benchmark]: CACSL2BoogieTranslator took 733.12ms. Allocated memory was 94.4MB in the beginning and 117.4MB in the end (delta: 23.1MB). Free memory was 63.3MB in the beginning and 82.5MB in the end (delta: -19.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 07:20:55,772 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 94.4MB. Free memory is still 49.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 733.12ms. Allocated memory was 94.4MB in the beginning and 117.4MB in the end (delta: 23.1MB). Free memory was 63.3MB in the beginning and 82.5MB in the end (delta: -19.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: 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_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF --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 9e43379b3f2624d77eec1084820c7c07499f5ec4432514ab066d4f5cf96eeebc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:20:58,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:20:58,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:20:58,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:20:58,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:20:58,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:20:58,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:20:58,142 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:20:58,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:20:58,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:20:58,147 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:20:58,148 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:20:58,149 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:20:58,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:20:58,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:20:58,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:20:58,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:20:58,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:20:58,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:20:58,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:20:58,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:20:58,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:20:58,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:20:58,169 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:20:58,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:20:58,182 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:20:58,182 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:20:58,184 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:20:58,184 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:20:58,186 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:20:58,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:20:58,189 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:20:58,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:20:58,192 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:20:58,200 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:20:58,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:20:58,204 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:20:58,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:20:58,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:20:58,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:20:58,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:20:58,209 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-20 07:20:58,259 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:20:58,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:20:58,260 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:20:58,260 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:20:58,261 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:20:58,262 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:20:58,263 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:20:58,263 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:20:58,264 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:20:58,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:20:58,265 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:20:58,265 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 07:20:58,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:20:58,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:20:58,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:20:58,266 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 07:20:58,266 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 07:20:58,267 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 07:20:58,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:20:58,267 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 07:20:58,267 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 07:20:58,267 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 07:20:58,268 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:20:58,268 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:20:58,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:20:58,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:20:58,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:20:58,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:20:58,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:20:58,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:20:58,270 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 07:20:58,270 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 07:20:58,270 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:20:58,271 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 07:20:58,271 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_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e43379b3f2624d77eec1084820c7c07499f5ec4432514ab066d4f5cf96eeebc [2021-11-20 07:20:58,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:20:58,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:20:58,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:20:58,654 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:20:58,655 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:20:58,656 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i [2021-11-20 07:20:58,740 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/data/8504f21dc/6cf7c0b508bd4695b48c09670821df26/FLAG1b8739e13 [2021-11-20 07:20:59,503 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:20:59,504 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i [2021-11-20 07:20:59,532 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/data/8504f21dc/6cf7c0b508bd4695b48c09670821df26/FLAG1b8739e13 [2021-11-20 07:20:59,697 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/data/8504f21dc/6cf7c0b508bd4695b48c09670821df26 [2021-11-20 07:20:59,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:20:59,705 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:20:59,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:20:59,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:20:59,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:20:59,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:20:59" (1/1) ... [2021-11-20 07:20:59,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e0e75e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:20:59, skipping insertion in model container [2021-11-20 07:20:59,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:20:59" (1/1) ... [2021-11-20 07:20:59,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:20:59,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:21:00,312 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[33021,33034] [2021-11-20 07:21:00,466 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44124,44137] [2021-11-20 07:21:00,467 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44245,44258] [2021-11-20 07:21:00,511 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:21:00,525 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 07:21:00,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:21:00,577 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[33021,33034] [2021-11-20 07:21:00,691 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44124,44137] [2021-11-20 07:21:00,693 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44245,44258] [2021-11-20 07:21:00,714 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:21:00,723 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:21:00,766 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[33021,33034] [2021-11-20 07:21:00,875 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44124,44137] [2021-11-20 07:21:00,876 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44245,44258] [2021-11-20 07:21:00,887 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:21:00,938 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:21:00,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:00 WrapperNode [2021-11-20 07:21:00,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:21:00,942 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:21:00,942 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:21:00,942 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:21:00,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:00" (1/1) ... [2021-11-20 07:21:01,009 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:00" (1/1) ... [2021-11-20 07:21:01,098 INFO L137 Inliner]: procedures = 179, calls = 328, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1175 [2021-11-20 07:21:01,102 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:21:01,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:21:01,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:21:01,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:21:01,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:00" (1/1) ... [2021-11-20 07:21:01,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:00" (1/1) ... [2021-11-20 07:21:01,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:00" (1/1) ... [2021-11-20 07:21:01,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:00" (1/1) ... [2021-11-20 07:21:01,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:00" (1/1) ... [2021-11-20 07:21:01,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:00" (1/1) ... [2021-11-20 07:21:01,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:00" (1/1) ... [2021-11-20 07:21:01,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:21:01,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:21:01,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:21:01,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:21:01,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:00" (1/1) ... [2021-11-20 07:21:01,291 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:21:01,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:21:01,313 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:21:01,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:21:01,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-20 07:21:01,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-20 07:21:01,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 07:21:01,379 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 07:21:01,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 07:21:01,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:21:01,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 07:21:01,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 07:21:01,380 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-20 07:21:01,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 07:21:01,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 07:21:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 07:21:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 07:21:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:21:01,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:21:01,619 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:21:01,621 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:21:01,625 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-20 07:21:07,413 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:21:07,430 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:21:07,431 INFO L301 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-20 07:21:07,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:21:07 BoogieIcfgContainer [2021-11-20 07:21:07,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:21:07,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:21:07,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:21:07,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:21:07,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:20:59" (1/3) ... [2021-11-20 07:21:07,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@561623d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:21:07, skipping insertion in model container [2021-11-20 07:21:07,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:00" (2/3) ... [2021-11-20 07:21:07,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@561623d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:21:07, skipping insertion in model container [2021-11-20 07:21:07,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:21:07" (3/3) ... [2021-11-20 07:21:07,443 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test7-2.i [2021-11-20 07:21:07,449 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:21:07,449 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 635 error locations. [2021-11-20 07:21:07,495 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:21:07,502 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 07:21:07,503 INFO L340 AbstractCegarLoop]: Starting to check reachability of 635 error locations. [2021-11-20 07:21:07,556 INFO L276 IsEmpty]: Start isEmpty. Operand has 1249 states, 612 states have (on average 2.2663398692810457) internal successors, (1387), 1244 states have internal predecessors, (1387), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 07:21:07,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-20 07:21:07,563 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:07,563 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-20 07:21:07,564 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-20 07:21:07,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:07,570 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2021-11-20 07:21:07,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:21:07,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1448179807] [2021-11-20 07:21:07,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:07,584 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:21:07,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:21:07,588 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:21:07,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 07:21:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:07,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:21:07,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:21:07,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:21:07,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:07,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:21:07,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:07,925 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:21:07,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1448179807] [2021-11-20 07:21:07,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1448179807] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:07,927 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:21:07,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 07:21:07,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594690816] [2021-11-20 07:21:07,930 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:07,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:21:07,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:21:07,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:21:07,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:21:07,995 INFO L87 Difference]: Start difference. First operand has 1249 states, 612 states have (on average 2.2663398692810457) internal successors, (1387), 1244 states have internal predecessors, (1387), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:21:10,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:10,608 INFO L93 Difference]: Finished difference Result 1417 states and 1492 transitions. [2021-11-20 07:21:10,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:21:10,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-20 07:21:10,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:10,634 INFO L225 Difference]: With dead ends: 1417 [2021-11-20 07:21:10,634 INFO L226 Difference]: Without dead ends: 1415 [2021-11-20 07:21:10,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:21:10,640 INFO L933 BasicCegarLoop]: 739 mSDtfsCounter, 1160 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:10,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1163 Valid, 893 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-20 07:21:10,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2021-11-20 07:21:10,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 1230. [2021-11-20 07:21:10,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 610 states have (on average 2.1163934426229507) internal successors, (1291), 1225 states have internal predecessors, (1291), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 07:21:10,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1297 transitions. [2021-11-20 07:21:10,751 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1297 transitions. Word has length 3 [2021-11-20 07:21:10,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:10,752 INFO L470 AbstractCegarLoop]: Abstraction has 1230 states and 1297 transitions. [2021-11-20 07:21:10,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:21:10,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1297 transitions. [2021-11-20 07:21:10,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-20 07:21:10,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:10,753 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-20 07:21:10,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:21:10,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:21:10,968 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-20 07:21:10,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:10,971 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2021-11-20 07:21:10,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:21:10,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29489652] [2021-11-20 07:21:10,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:10,973 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:21:10,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:21:10,975 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:21:11,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 07:21:11,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:11,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 07:21:11,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:21:11,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:21:11,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:11,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:21:11,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:11,225 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:21:11,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29489652] [2021-11-20 07:21:11,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29489652] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:11,228 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:21:11,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-20 07:21:11,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402343680] [2021-11-20 07:21:11,229 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:11,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:21:11,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:21:11,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:21:11,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:21:11,233 INFO L87 Difference]: Start difference. First operand 1230 states and 1297 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:21:16,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:16,898 INFO L93 Difference]: Finished difference Result 1894 states and 2004 transitions. [2021-11-20 07:21:16,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:21:16,899 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-20 07:21:16,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:16,909 INFO L225 Difference]: With dead ends: 1894 [2021-11-20 07:21:16,909 INFO L226 Difference]: Without dead ends: 1894 [2021-11-20 07:21:16,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:21:16,915 INFO L933 BasicCegarLoop]: 871 mSDtfsCounter, 1545 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:16,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1545 Valid, 1760 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-11-20 07:21:16,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2021-11-20 07:21:16,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1265. [2021-11-20 07:21:16,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1265 states, 654 states have (on average 2.09480122324159) internal successors, (1370), 1260 states have internal predecessors, (1370), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 07:21:16,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1376 transitions. [2021-11-20 07:21:16,956 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1376 transitions. Word has length 3 [2021-11-20 07:21:16,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:16,957 INFO L470 AbstractCegarLoop]: Abstraction has 1265 states and 1376 transitions. [2021-11-20 07:21:16,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:21:16,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1376 transitions. [2021-11-20 07:21:16,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 07:21:16,958 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:16,958 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:21:16,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:21:17,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:21:17,185 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-20 07:21:17,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:17,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2021-11-20 07:21:17,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:21:17,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468825531] [2021-11-20 07:21:17,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:17,187 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:21:17,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:21:17,193 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:21:17,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 07:21:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:17,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:21:17,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:21:17,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:21:17,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:17,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:21:17,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:17,416 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:21:17,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468825531] [2021-11-20 07:21:17,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1468825531] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:17,417 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:21:17,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 07:21:17,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451088266] [2021-11-20 07:21:17,417 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:17,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:21:17,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:21:17,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:21:17,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:21:17,419 INFO L87 Difference]: Start difference. First operand 1265 states and 1376 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:21:19,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:19,969 INFO L93 Difference]: Finished difference Result 1595 states and 1731 transitions. [2021-11-20 07:21:19,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:21:19,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2021-11-20 07:21:19,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:19,980 INFO L225 Difference]: With dead ends: 1595 [2021-11-20 07:21:19,980 INFO L226 Difference]: Without dead ends: 1595 [2021-11-20 07:21:19,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:21:19,982 INFO L933 BasicCegarLoop]: 1135 mSDtfsCounter, 975 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:19,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [978 Valid, 1479 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-20 07:21:19,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1595 states. [2021-11-20 07:21:20,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1595 to 1218. [2021-11-20 07:21:20,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 654 states have (on average 2.018348623853211) internal successors, (1320), 1213 states have internal predecessors, (1320), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 07:21:20,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1326 transitions. [2021-11-20 07:21:20,017 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1326 transitions. Word has length 8 [2021-11-20 07:21:20,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:20,018 INFO L470 AbstractCegarLoop]: Abstraction has 1218 states and 1326 transitions. [2021-11-20 07:21:20,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:21:20,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1326 transitions. [2021-11-20 07:21:20,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 07:21:20,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:20,019 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:21:20,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:21:20,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:21:20,231 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-20 07:21:20,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:20,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2021-11-20 07:21:20,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:21:20,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [210279340] [2021-11-20 07:21:20,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:20,232 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:21:20,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:21:20,235 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:21:20,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 07:21:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:20,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 07:21:20,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:21:20,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:21:20,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:20,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:21:20,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:20,552 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:21:20,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [210279340] [2021-11-20 07:21:20,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [210279340] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:20,552 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:21:20,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-20 07:21:20,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401043744] [2021-11-20 07:21:20,553 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:20,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:21:20,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:21:20,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:21:20,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:21:20,554 INFO L87 Difference]: Start difference. First operand 1218 states and 1326 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:21:24,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:24,986 INFO L93 Difference]: Finished difference Result 1639 states and 1739 transitions. [2021-11-20 07:21:24,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:21:24,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 8 [2021-11-20 07:21:24,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:25,001 INFO L225 Difference]: With dead ends: 1639 [2021-11-20 07:21:25,002 INFO L226 Difference]: Without dead ends: 1639 [2021-11-20 07:21:25,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:21:25,006 INFO L933 BasicCegarLoop]: 1309 mSDtfsCounter, 1392 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1393 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:25,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1393 Valid, 1824 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-11-20 07:21:25,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2021-11-20 07:21:25,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1208. [2021-11-20 07:21:25,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 654 states have (on average 1.9984709480122325) internal successors, (1307), 1203 states have internal predecessors, (1307), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 07:21:25,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1313 transitions. [2021-11-20 07:21:25,051 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1313 transitions. Word has length 8 [2021-11-20 07:21:25,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:25,052 INFO L470 AbstractCegarLoop]: Abstraction has 1208 states and 1313 transitions. [2021-11-20 07:21:25,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:21:25,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1313 transitions. [2021-11-20 07:21:25,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 07:21:25,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:25,053 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:21:25,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 07:21:25,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:21:25,264 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr526ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-20 07:21:25,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:25,265 INFO L85 PathProgramCache]: Analyzing trace with hash 871378613, now seen corresponding path program 1 times [2021-11-20 07:21:25,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:21:25,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315877267] [2021-11-20 07:21:25,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:25,265 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:21:25,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:21:25,266 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:21:25,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 07:21:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:25,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 07:21:25,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:21:25,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:25,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:21:25,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:25,582 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:21:25,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [315877267] [2021-11-20 07:21:25,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [315877267] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:25,583 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:21:25,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 07:21:25,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906514045] [2021-11-20 07:21:25,583 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:25,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:21:25,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:21:25,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:21:25,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:21:25,585 INFO L87 Difference]: Start difference. First operand 1208 states and 1313 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:21:26,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:26,566 INFO L93 Difference]: Finished difference Result 1851 states and 1998 transitions. [2021-11-20 07:21:26,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:21:26,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2021-11-20 07:21:26,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:26,576 INFO L225 Difference]: With dead ends: 1851 [2021-11-20 07:21:26,576 INFO L226 Difference]: Without dead ends: 1851 [2021-11-20 07:21:26,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:21:26,577 INFO L933 BasicCegarLoop]: 1360 mSDtfsCounter, 754 mSDsluCounter, 2291 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 3651 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:26,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [756 Valid, 3651 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 07:21:26,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1851 states. [2021-11-20 07:21:26,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1851 to 1449. [2021-11-20 07:21:26,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 895 states have (on average 1.9687150837988827) internal successors, (1762), 1444 states have internal predecessors, (1762), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 07:21:26,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1768 transitions. [2021-11-20 07:21:26,619 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1768 transitions. Word has length 11 [2021-11-20 07:21:26,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:26,619 INFO L470 AbstractCegarLoop]: Abstraction has 1449 states and 1768 transitions. [2021-11-20 07:21:26,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:21:26,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1768 transitions. [2021-11-20 07:21:26,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 07:21:26,621 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:26,621 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:21:26,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 07:21:26,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:21:26,833 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-20 07:21:26,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:26,833 INFO L85 PathProgramCache]: Analyzing trace with hash -702153283, now seen corresponding path program 1 times [2021-11-20 07:21:26,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:21:26,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008649996] [2021-11-20 07:21:26,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:26,835 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:21:26,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:21:26,836 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:21:26,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 07:21:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:26,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:21:26,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:21:26,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:26,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:21:27,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:27,020 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:21:27,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2008649996] [2021-11-20 07:21:27,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2008649996] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:27,020 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:21:27,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 07:21:27,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150047222] [2021-11-20 07:21:27,021 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:27,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:21:27,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:21:27,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:21:27,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:21:27,022 INFO L87 Difference]: Start difference. First operand 1449 states and 1768 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:21:27,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:27,057 INFO L93 Difference]: Finished difference Result 1611 states and 1916 transitions. [2021-11-20 07:21:27,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:21:27,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-20 07:21:27,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:27,065 INFO L225 Difference]: With dead ends: 1611 [2021-11-20 07:21:27,065 INFO L226 Difference]: Without dead ends: 1611 [2021-11-20 07:21:27,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:21:27,067 INFO L933 BasicCegarLoop]: 1184 mSDtfsCounter, 583 mSDsluCounter, 1636 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 2820 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:27,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [583 Valid, 2820 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:21:27,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2021-11-20 07:21:27,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1389. [2021-11-20 07:21:27,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1389 states, 859 states have (on average 1.951105937136205) internal successors, (1676), 1384 states have internal predecessors, (1676), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 07:21:27,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 1682 transitions. [2021-11-20 07:21:27,103 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 1682 transitions. Word has length 13 [2021-11-20 07:21:27,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:27,104 INFO L470 AbstractCegarLoop]: Abstraction has 1389 states and 1682 transitions. [2021-11-20 07:21:27,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:21:27,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 1682 transitions. [2021-11-20 07:21:27,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 07:21:27,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:27,105 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:21:27,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 07:21:27,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:21:27,320 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr364REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-20 07:21:27,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:27,321 INFO L85 PathProgramCache]: Analyzing trace with hash -459414345, now seen corresponding path program 1 times [2021-11-20 07:21:27,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:21:27,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [36581222] [2021-11-20 07:21:27,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:27,322 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:21:27,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:21:27,324 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:21:27,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 07:21:27,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:27,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 07:21:27,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:21:27,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:27,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:21:27,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:27,539 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:21:27,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [36581222] [2021-11-20 07:21:27,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [36581222] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:27,539 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:21:27,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-20 07:21:27,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193918360] [2021-11-20 07:21:27,540 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:27,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:21:27,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:21:27,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:21:27,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:21:27,541 INFO L87 Difference]: Start difference. First operand 1389 states and 1682 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:21:27,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:27,623 INFO L93 Difference]: Finished difference Result 1583 states and 1860 transitions. [2021-11-20 07:21:27,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:21:27,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 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 15 [2021-11-20 07:21:27,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:27,631 INFO L225 Difference]: With dead ends: 1583 [2021-11-20 07:21:27,631 INFO L226 Difference]: Without dead ends: 1583 [2021-11-20 07:21:27,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:21:27,632 INFO L933 BasicCegarLoop]: 1139 mSDtfsCounter, 554 mSDsluCounter, 2768 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 3907 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:27,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [554 Valid, 3907 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:21:27,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2021-11-20 07:21:27,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1359. [2021-11-20 07:21:27,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 843 states have (on average 1.9193357058125742) internal successors, (1618), 1354 states have internal predecessors, (1618), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 07:21:27,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1624 transitions. [2021-11-20 07:21:27,686 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1624 transitions. Word has length 15 [2021-11-20 07:21:27,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:27,687 INFO L470 AbstractCegarLoop]: Abstraction has 1359 states and 1624 transitions. [2021-11-20 07:21:27,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:21:27,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1624 transitions. [2021-11-20 07:21:27,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 07:21:27,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:27,688 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:21:27,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 07:21:27,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:21:27,900 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr634ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-20 07:21:27,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:27,901 INFO L85 PathProgramCache]: Analyzing trace with hash 2058395604, now seen corresponding path program 1 times [2021-11-20 07:21:27,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:21:27,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [581655091] [2021-11-20 07:21:27,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:27,902 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:21:27,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:21:27,902 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:21:27,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 07:21:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:28,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 07:21:28,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:21:28,075 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:21:28,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:21:28,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:21:28,135 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-20 07:21:28,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-20 07:21:28,186 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-20 07:21:28,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-20 07:21:28,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:28,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:21:28,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:28,297 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:21:28,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [581655091] [2021-11-20 07:21:28,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [581655091] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:28,298 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:21:28,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 07:21:28,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757090814] [2021-11-20 07:21:28,298 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:28,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:21:28,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:21:28,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:21:28,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:21:28,299 INFO L87 Difference]: Start difference. First operand 1359 states and 1624 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:21:30,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:30,265 INFO L93 Difference]: Finished difference Result 1795 states and 2119 transitions. [2021-11-20 07:21:30,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:21:30,265 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-20 07:21:30,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:30,272 INFO L225 Difference]: With dead ends: 1795 [2021-11-20 07:21:30,272 INFO L226 Difference]: Without dead ends: 1795 [2021-11-20 07:21:30,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:21:30,273 INFO L933 BasicCegarLoop]: 1108 mSDtfsCounter, 424 mSDsluCounter, 4204 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 5312 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:30,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 5312 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-20 07:21:30,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2021-11-20 07:21:30,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 1358. [2021-11-20 07:21:30,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 842 states have (on average 1.9192399049881235) internal successors, (1616), 1353 states have internal predecessors, (1616), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 07:21:30,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 1622 transitions. [2021-11-20 07:21:30,305 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 1622 transitions. Word has length 16 [2021-11-20 07:21:30,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:30,305 INFO L470 AbstractCegarLoop]: Abstraction has 1358 states and 1622 transitions. [2021-11-20 07:21:30,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:21:30,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 1622 transitions. [2021-11-20 07:21:30,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 07:21:30,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:30,306 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:21:30,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 07:21:30,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:21:30,518 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-20 07:21:30,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:30,519 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2021-11-20 07:21:30,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:21:30,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021693576] [2021-11-20 07:21:30,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:30,519 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:21:30,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:21:30,520 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:21:30,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 07:21:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:30,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:21:30,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:21:30,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:30,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:21:30,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:30,723 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:21:30,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021693576] [2021-11-20 07:21:30,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1021693576] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:30,723 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:21:30,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 07:21:30,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455920958] [2021-11-20 07:21:30,724 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:30,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:21:30,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:21:30,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:21:30,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:21:30,725 INFO L87 Difference]: Start difference. First operand 1358 states and 1622 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:21:30,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:30,762 INFO L93 Difference]: Finished difference Result 1298 states and 1536 transitions. [2021-11-20 07:21:30,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:21:30,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-20 07:21:30,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:30,768 INFO L225 Difference]: With dead ends: 1298 [2021-11-20 07:21:30,768 INFO L226 Difference]: Without dead ends: 1298 [2021-11-20 07:21:30,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:21:30,768 INFO L933 BasicCegarLoop]: 1105 mSDtfsCounter, 2178 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2181 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:30,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2181 Valid, 1127 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:21:30,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2021-11-20 07:21:30,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1298. [2021-11-20 07:21:30,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 806 states have (on average 1.8982630272952854) internal successors, (1530), 1293 states have internal predecessors, (1530), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 07:21:30,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 1536 transitions. [2021-11-20 07:21:30,796 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 1536 transitions. Word has length 18 [2021-11-20 07:21:30,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:30,797 INFO L470 AbstractCegarLoop]: Abstraction has 1298 states and 1536 transitions. [2021-11-20 07:21:30,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:21:30,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 1536 transitions. [2021-11-20 07:21:30,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 07:21:30,798 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:30,798 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:21:30,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-20 07:21:31,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:21:31,010 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-20 07:21:31,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:31,010 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2021-11-20 07:21:31,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:21:31,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462893135] [2021-11-20 07:21:31,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:31,011 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:21:31,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:21:31,012 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:21:31,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 07:21:31,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:31,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 07:21:31,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:21:31,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:31,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:21:31,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:31,240 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:21:31,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462893135] [2021-11-20 07:21:31,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462893135] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:31,241 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:21:31,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-20 07:21:31,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974250750] [2021-11-20 07:21:31,241 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:31,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:21:31,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:21:31,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:21:31,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:21:31,242 INFO L87 Difference]: Start difference. First operand 1298 states and 1536 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:21:31,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:31,328 INFO L93 Difference]: Finished difference Result 1270 states and 1480 transitions. [2021-11-20 07:21:31,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:21:31,329 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-20 07:21:31,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:31,336 INFO L225 Difference]: With dead ends: 1270 [2021-11-20 07:21:31,336 INFO L226 Difference]: Without dead ends: 1270 [2021-11-20 07:21:31,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:21:31,337 INFO L933 BasicCegarLoop]: 1060 mSDtfsCounter, 2110 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2113 SdHoareTripleChecker+Valid, 2135 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:31,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2113 Valid, 2135 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:21:31,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2021-11-20 07:21:31,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1268. [2021-11-20 07:21:31,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 790 states have (on average 1.8632911392405063) internal successors, (1472), 1263 states have internal predecessors, (1472), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 07:21:31,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1478 transitions. [2021-11-20 07:21:31,363 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1478 transitions. Word has length 20 [2021-11-20 07:21:31,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:31,363 INFO L470 AbstractCegarLoop]: Abstraction has 1268 states and 1478 transitions. [2021-11-20 07:21:31,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:21:31,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1478 transitions. [2021-11-20 07:21:31,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-20 07:21:31,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:31,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:21:31,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-20 07:21:31,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:21:31,577 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-20 07:21:31,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:31,577 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2021-11-20 07:21:31,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:21:31,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070452502] [2021-11-20 07:21:31,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:31,578 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:21:31,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:21:31,579 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:21:31,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 07:21:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:31,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 07:21:31,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:21:31,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:21:31,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:31,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:21:31,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:31,951 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:21:31,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070452502] [2021-11-20 07:21:31,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1070452502] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:31,952 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:21:31,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 07:21:31,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036283579] [2021-11-20 07:21:31,953 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:31,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:21:31,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:21:31,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:21:31,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:21:31,954 INFO L87 Difference]: Start difference. First operand 1268 states and 1478 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 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) [2021-11-20 07:21:34,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:34,512 INFO L93 Difference]: Finished difference Result 1850 states and 2182 transitions. [2021-11-20 07:21:34,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:21:34,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 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 34 [2021-11-20 07:21:34,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:34,523 INFO L225 Difference]: With dead ends: 1850 [2021-11-20 07:21:34,523 INFO L226 Difference]: Without dead ends: 1850 [2021-11-20 07:21:34,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:21:34,524 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 1719 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:34,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1719 Valid, 1222 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-20 07:21:34,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1850 states. [2021-11-20 07:21:34,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1850 to 1264. [2021-11-20 07:21:34,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 790 states have (on average 1.8531645569620254) internal successors, (1464), 1259 states have internal predecessors, (1464), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 07:21:34,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 1470 transitions. [2021-11-20 07:21:34,552 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 1470 transitions. Word has length 34 [2021-11-20 07:21:34,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:34,554 INFO L470 AbstractCegarLoop]: Abstraction has 1264 states and 1470 transitions. [2021-11-20 07:21:34,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 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) [2021-11-20 07:21:34,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 1470 transitions. [2021-11-20 07:21:34,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-20 07:21:34,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:34,561 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:21:34,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-20 07:21:34,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:21:34,773 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-20 07:21:34,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:34,773 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2021-11-20 07:21:34,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:21:34,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1318099024] [2021-11-20 07:21:34,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:34,774 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:21:34,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:21:34,775 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:21:34,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 07:21:34,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:34,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 07:21:34,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:21:34,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:21:35,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:35,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:21:35,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:35,651 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:21:35,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1318099024] [2021-11-20 07:21:35,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1318099024] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:35,652 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:21:35,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 07:21:35,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879829336] [2021-11-20 07:21:35,652 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:35,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:21:35,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:21:35,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:21:35,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:21:35,654 INFO L87 Difference]: Start difference. First operand 1264 states and 1470 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:21:43,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:43,344 INFO L93 Difference]: Finished difference Result 1977 states and 2286 transitions. [2021-11-20 07:21:43,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:21:43,345 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-20 07:21:43,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:43,352 INFO L225 Difference]: With dead ends: 1977 [2021-11-20 07:21:43,352 INFO L226 Difference]: Without dead ends: 1977 [2021-11-20 07:21:43,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:21:43,353 INFO L933 BasicCegarLoop]: 1357 mSDtfsCounter, 2009 mSDsluCounter, 1644 mSDsCounter, 0 mSdLazyCounter, 2021 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2009 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 2032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:43,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2009 Valid, 3001 Invalid, 2032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2021 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2021-11-20 07:21:43,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2021-11-20 07:21:43,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1260. [2021-11-20 07:21:43,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 790 states have (on average 1.8430379746835444) internal successors, (1456), 1255 states have internal predecessors, (1456), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 07:21:43,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1462 transitions. [2021-11-20 07:21:43,378 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1462 transitions. Word has length 34 [2021-11-20 07:21:43,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:43,379 INFO L470 AbstractCegarLoop]: Abstraction has 1260 states and 1462 transitions. [2021-11-20 07:21:43,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:21:43,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1462 transitions. [2021-11-20 07:21:43,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-20 07:21:43,380 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:43,381 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:21:43,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-20 07:21:43,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:21:43,592 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-20 07:21:43,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:43,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2021-11-20 07:21:43,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:21:43,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386539201] [2021-11-20 07:21:43,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:43,593 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:21:43,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:21:43,594 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:21:43,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-20 07:21:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:43,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 07:21:43,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:21:43,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:43,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:21:44,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:44,011 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:21:44,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [386539201] [2021-11-20 07:21:44,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [386539201] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:44,011 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:21:44,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 07:21:44,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896803268] [2021-11-20 07:21:44,012 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:44,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:21:44,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:21:44,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:21:44,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:21:44,013 INFO L87 Difference]: Start difference. First operand 1260 states and 1462 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:21:44,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:44,075 INFO L93 Difference]: Finished difference Result 1248 states and 1442 transitions. [2021-11-20 07:21:44,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:21:44,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-20 07:21:44,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:44,084 INFO L225 Difference]: With dead ends: 1248 [2021-11-20 07:21:44,084 INFO L226 Difference]: Without dead ends: 1248 [2021-11-20 07:21:44,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:21:44,086 INFO L933 BasicCegarLoop]: 1054 mSDtfsCounter, 1036 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:44,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1039 Valid, 2113 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:21:44,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2021-11-20 07:21:44,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1248. [2021-11-20 07:21:44,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 778 states have (on average 1.845758354755784) internal successors, (1436), 1243 states have internal predecessors, (1436), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 07:21:44,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1442 transitions. [2021-11-20 07:21:44,108 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1442 transitions. Word has length 52 [2021-11-20 07:21:44,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:44,108 INFO L470 AbstractCegarLoop]: Abstraction has 1248 states and 1442 transitions. [2021-11-20 07:21:44,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:21:44,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1442 transitions. [2021-11-20 07:21:44,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-20 07:21:44,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:44,113 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:21:44,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-20 07:21:44,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:21:44,325 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-20 07:21:44,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:44,326 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2021-11-20 07:21:44,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:21:44,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074254007] [2021-11-20 07:21:44,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:44,327 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:21:44,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:21:44,327 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:21:44,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-20 07:21:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:44,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 07:21:44,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:21:44,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:21:44,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:21:45,394 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 07:21:45,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 26 [2021-11-20 07:21:45,417 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 07:21:45,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2021-11-20 07:21:45,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:45,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:21:50,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:50,658 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:21:50,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074254007] [2021-11-20 07:21:50,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074254007] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:50,658 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:21:50,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 07:21:50,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207770937] [2021-11-20 07:21:50,659 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:50,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:21:50,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:21:50,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:21:50,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-20 07:21:50,660 INFO L87 Difference]: Start difference. First operand 1248 states and 1442 transitions. Second operand has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:21:56,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:56,511 INFO L93 Difference]: Finished difference Result 1795 states and 2079 transitions. [2021-11-20 07:21:56,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:21:56,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-20 07:21:56,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:56,519 INFO L225 Difference]: With dead ends: 1795 [2021-11-20 07:21:56,519 INFO L226 Difference]: Without dead ends: 1795 [2021-11-20 07:21:56,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-20 07:21:56,520 INFO L933 BasicCegarLoop]: 830 mSDtfsCounter, 1326 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 1574 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1330 SdHoareTripleChecker+Valid, 2161 SdHoareTripleChecker+Invalid, 3195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1580 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:56,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1330 Valid, 2161 Invalid, 3195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1574 Invalid, 0 Unknown, 1580 Unchecked, 5.8s Time] [2021-11-20 07:21:56,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2021-11-20 07:21:56,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 1226. [2021-11-20 07:21:56,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 788 states have (on average 1.8045685279187818) internal successors, (1422), 1221 states have internal predecessors, (1422), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 07:21:56,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1428 transitions. [2021-11-20 07:21:56,544 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1428 transitions. Word has length 60 [2021-11-20 07:21:56,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:56,544 INFO L470 AbstractCegarLoop]: Abstraction has 1226 states and 1428 transitions. [2021-11-20 07:21:56,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:21:56,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1428 transitions. [2021-11-20 07:21:56,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-20 07:21:56,545 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:56,546 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:21:56,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-20 07:21:56,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:21:56,760 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-20 07:21:56,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:56,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1192602638, now seen corresponding path program 1 times [2021-11-20 07:21:56,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:21:56,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741698205] [2021-11-20 07:21:56,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:56,761 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:21:56,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:21:56,762 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:21:56,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-20 07:21:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:56,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 07:21:56,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:21:57,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:57,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:21:57,255 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 8 treesize of output 6 [2021-11-20 07:21:57,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:57,578 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:21:57,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741698205] [2021-11-20 07:21:57,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741698205] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:57,579 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:21:57,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 07:21:57,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199449080] [2021-11-20 07:21:57,579 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:57,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:21:57,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:21:57,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:21:57,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:21:57,581 INFO L87 Difference]: Start difference. First operand 1226 states and 1428 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 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) [2021-11-20 07:22:00,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:22:00,204 INFO L93 Difference]: Finished difference Result 1224 states and 1426 transitions. [2021-11-20 07:22:00,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:22:00,205 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 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 62 [2021-11-20 07:22:00,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:22:00,211 INFO L225 Difference]: With dead ends: 1224 [2021-11-20 07:22:00,211 INFO L226 Difference]: Without dead ends: 1224 [2021-11-20 07:22:00,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:22:00,212 INFO L933 BasicCegarLoop]: 651 mSDtfsCounter, 813 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-20 07:22:00,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [816 Valid, 1092 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-20 07:22:00,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2021-11-20 07:22:00,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1224. [2021-11-20 07:22:00,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 788 states have (on average 1.8020304568527918) internal successors, (1420), 1219 states have internal predecessors, (1420), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 07:22:00,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1426 transitions. [2021-11-20 07:22:00,231 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1426 transitions. Word has length 62 [2021-11-20 07:22:00,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:22:00,232 INFO L470 AbstractCegarLoop]: Abstraction has 1224 states and 1426 transitions. [2021-11-20 07:22:00,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 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) [2021-11-20 07:22:00,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1426 transitions. [2021-11-20 07:22:00,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-20 07:22:00,233 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:22:00,233 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:22:00,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-20 07:22:00,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:22:00,447 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-20 07:22:00,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:22:00,447 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2021-11-20 07:22:00,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:22:00,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1387100586] [2021-11-20 07:22:00,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:22:00,448 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:22:00,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:22:00,449 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:22:00,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-20 07:22:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:00,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:22:00,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:22:00,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:22:00,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-20 07:22:00,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-20 07:22:00,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:22:00,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:22:00,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:22:00,897 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:22:00,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1387100586] [2021-11-20 07:22:00,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1387100586] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:22:00,898 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:22:00,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 07:22:00,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502442044] [2021-11-20 07:22:00,898 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:22:00,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:22:00,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:22:00,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:22:00,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:22:00,899 INFO L87 Difference]: Start difference. First operand 1224 states and 1426 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 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) [2021-11-20 07:22:04,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:22:04,022 INFO L93 Difference]: Finished difference Result 1223 states and 1425 transitions. [2021-11-20 07:22:04,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:22:04,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 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) Word has length 65 [2021-11-20 07:22:04,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:22:04,028 INFO L225 Difference]: With dead ends: 1223 [2021-11-20 07:22:04,029 INFO L226 Difference]: Without dead ends: 1223 [2021-11-20 07:22:04,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:22:04,029 INFO L933 BasicCegarLoop]: 1018 mSDtfsCounter, 4 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2584 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:22:04,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2584 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1493 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-20 07:22:04,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2021-11-20 07:22:04,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1223. [2021-11-20 07:22:04,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 788 states have (on average 1.8007614213197969) internal successors, (1419), 1218 states have internal predecessors, (1419), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 07:22:04,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1425 transitions. [2021-11-20 07:22:04,051 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1425 transitions. Word has length 65 [2021-11-20 07:22:04,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:22:04,051 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 1425 transitions. [2021-11-20 07:22:04,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 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) [2021-11-20 07:22:04,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1425 transitions. [2021-11-20 07:22:04,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-20 07:22:04,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:22:04,053 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:22:04,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-20 07:22:04,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:22:04,286 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-20 07:22:04,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:22:04,287 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2021-11-20 07:22:04,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:22:04,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429994345] [2021-11-20 07:22:04,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:22:04,288 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:22:04,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:22:04,289 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:22:04,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-20 07:22:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:04,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 07:22:04,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:22:04,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:22:04,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-20 07:22:04,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:22:04,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-20 07:22:04,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-20 07:22:04,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:22:04,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:22:04,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:22:04,986 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:22:04,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429994345] [2021-11-20 07:22:04,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429994345] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:22:04,986 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:22:04,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-20 07:22:04,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615804346] [2021-11-20 07:22:04,987 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:22:04,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 07:22:04,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:22:04,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 07:22:04,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:22:04,988 INFO L87 Difference]: Start difference. First operand 1223 states and 1425 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:22:15,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:22:15,404 INFO L93 Difference]: Finished difference Result 1222 states and 1424 transitions. [2021-11-20 07:22:15,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:22:15,405 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-20 07:22:15,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:22:15,410 INFO L225 Difference]: With dead ends: 1222 [2021-11-20 07:22:15,410 INFO L226 Difference]: Without dead ends: 1222 [2021-11-20 07:22:15,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:22:15,411 INFO L933 BasicCegarLoop]: 1018 mSDtfsCounter, 3 mSDsluCounter, 2695 mSDsCounter, 0 mSdLazyCounter, 2400 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3713 SdHoareTripleChecker+Invalid, 2401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:22:15,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 3713 Invalid, 2401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2400 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2021-11-20 07:22:15,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2021-11-20 07:22:15,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1222. [2021-11-20 07:22:15,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 787 states have (on average 1.8017789072426937) internal successors, (1418), 1217 states have internal predecessors, (1418), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 07:22:15,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1424 transitions. [2021-11-20 07:22:15,434 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1424 transitions. Word has length 65 [2021-11-20 07:22:15,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:22:15,435 INFO L470 AbstractCegarLoop]: Abstraction has 1222 states and 1424 transitions. [2021-11-20 07:22:15,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:22:15,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1424 transitions. [2021-11-20 07:22:15,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-20 07:22:15,436 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:22:15,436 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:22:15,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-20 07:22:15,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:22:15,649 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-20 07:22:15,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:22:15,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1088613615, now seen corresponding path program 1 times [2021-11-20 07:22:15,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:22:15,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2003289081] [2021-11-20 07:22:15,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:22:15,651 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:22:15,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:22:15,651 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:22:15,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-20 07:22:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:15,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 07:22:15,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:22:16,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:22:16,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:22:16,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:22:16,213 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:22:16,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2003289081] [2021-11-20 07:22:16,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2003289081] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:22:16,213 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:22:16,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 07:22:16,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217201109] [2021-11-20 07:22:16,217 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:22:16,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:22:16,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:22:16,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:22:16,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:22:16,218 INFO L87 Difference]: Start difference. First operand 1222 states and 1424 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 07:22:16,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:22:16,309 INFO L93 Difference]: Finished difference Result 1232 states and 1437 transitions. [2021-11-20 07:22:16,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:22:16,310 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 73 [2021-11-20 07:22:16,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:22:16,316 INFO L225 Difference]: With dead ends: 1232 [2021-11-20 07:22:16,316 INFO L226 Difference]: Without dead ends: 1232 [2021-11-20 07:22:16,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:22:16,317 INFO L933 BasicCegarLoop]: 1018 mSDtfsCounter, 11 mSDsluCounter, 2030 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3048 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:22:16,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 3048 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:22:16,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2021-11-20 07:22:16,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1232. [2021-11-20 07:22:16,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 795 states have (on average 1.79874213836478) internal successors, (1430), 1226 states have internal predecessors, (1430), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-20 07:22:16,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1437 transitions. [2021-11-20 07:22:16,346 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1437 transitions. Word has length 73 [2021-11-20 07:22:16,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:22:16,346 INFO L470 AbstractCegarLoop]: Abstraction has 1232 states and 1437 transitions. [2021-11-20 07:22:16,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 07:22:16,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1437 transitions. [2021-11-20 07:22:16,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-20 07:22:16,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:22:16,348 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:22:16,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-20 07:22:16,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:22:16,561 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-20 07:22:16,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:22:16,562 INFO L85 PathProgramCache]: Analyzing trace with hash 973507983, now seen corresponding path program 1 times [2021-11-20 07:22:16,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:22:16,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044697448] [2021-11-20 07:22:16,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:22:16,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:22:16,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:22:16,564 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:22:16,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-20 07:22:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:16,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 07:22:16,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:22:16,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:22:16,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:22:17,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:22:17,194 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:22:17,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2044697448] [2021-11-20 07:22:17,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2044697448] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:22:17,194 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:22:17,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-20 07:22:17,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442515695] [2021-11-20 07:22:17,194 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:22:17,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 07:22:17,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:22:17,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 07:22:17,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:22:17,196 INFO L87 Difference]: Start difference. First operand 1232 states and 1437 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 07:22:17,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:22:17,570 INFO L93 Difference]: Finished difference Result 1246 states and 1455 transitions. [2021-11-20 07:22:17,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 07:22:17,571 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 75 [2021-11-20 07:22:17,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:22:17,580 INFO L225 Difference]: With dead ends: 1246 [2021-11-20 07:22:17,580 INFO L226 Difference]: Without dead ends: 1242 [2021-11-20 07:22:17,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-20 07:22:17,581 INFO L933 BasicCegarLoop]: 1020 mSDtfsCounter, 28 mSDsluCounter, 5078 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 6098 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:22:17,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 6098 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:22:17,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2021-11-20 07:22:17,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 1238. [2021-11-20 07:22:17,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 801 states have (on average 1.7952559300873907) internal successors, (1438), 1232 states have internal predecessors, (1438), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-20 07:22:17,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1445 transitions. [2021-11-20 07:22:17,625 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1445 transitions. Word has length 75 [2021-11-20 07:22:17,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:22:17,625 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 1445 transitions. [2021-11-20 07:22:17,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 07:22:17,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1445 transitions. [2021-11-20 07:22:17,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-20 07:22:17,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:22:17,627 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:22:17,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-20 07:22:17,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:22:17,840 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-20 07:22:17,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:22:17,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1648945, now seen corresponding path program 2 times [2021-11-20 07:22:17,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:22:17,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [660857881] [2021-11-20 07:22:17,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:22:17,842 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:22:17,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:22:17,843 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:22:17,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-20 07:22:18,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 07:22:18,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:22:18,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 07:22:18,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:22:18,451 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:22:18,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:22:18,916 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:22:18,916 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:22:18,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [660857881] [2021-11-20 07:22:18,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [660857881] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:22:18,917 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:22:18,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-20 07:22:18,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84425819] [2021-11-20 07:22:18,917 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:22:18,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 07:22:18,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:22:18,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 07:22:18,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-20 07:22:18,919 INFO L87 Difference]: Start difference. First operand 1238 states and 1445 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 07:22:20,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:22:20,563 INFO L93 Difference]: Finished difference Result 1266 states and 1483 transitions. [2021-11-20 07:22:20,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-20 07:22:20,564 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 79 [2021-11-20 07:22:20,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:22:20,580 INFO L225 Difference]: With dead ends: 1266 [2021-11-20 07:22:20,580 INFO L226 Difference]: Without dead ends: 1262 [2021-11-20 07:22:20,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-20 07:22:20,584 INFO L933 BasicCegarLoop]: 1024 mSDtfsCounter, 56 mSDsluCounter, 13220 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 14244 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:22:20,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 14244 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 07:22:20,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2021-11-20 07:22:20,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1250. [2021-11-20 07:22:20,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 813 states have (on average 1.7884378843788438) internal successors, (1454), 1244 states have internal predecessors, (1454), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-20 07:22:20,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1461 transitions. [2021-11-20 07:22:20,638 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1461 transitions. Word has length 79 [2021-11-20 07:22:20,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:22:20,638 INFO L470 AbstractCegarLoop]: Abstraction has 1250 states and 1461 transitions. [2021-11-20 07:22:20,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 07:22:20,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1461 transitions. [2021-11-20 07:22:20,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-20 07:22:20,641 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:22:20,641 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:22:20,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-20 07:22:20,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:22:20,857 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-20 07:22:20,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:22:20,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1487112527, now seen corresponding path program 3 times [2021-11-20 07:22:20,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:22:20,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715406227] [2021-11-20 07:22:20,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 07:22:20,858 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:22:20,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:22:20,859 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:22:20,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-20 07:22:21,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-20 07:22:21,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:22:21,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 07:22:21,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:22:22,118 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:22:22,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:22:23,856 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:22:23,856 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:22:23,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715406227] [2021-11-20 07:22:23,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1715406227] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:22:23,857 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:22:23,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-20 07:22:23,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875036224] [2021-11-20 07:22:23,857 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:22:23,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-20 07:22:23,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:22:23,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-20 07:22:23,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-20 07:22:23,859 INFO L87 Difference]: Start difference. First operand 1250 states and 1461 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 07:22:31,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:22:31,835 INFO L93 Difference]: Finished difference Result 1306 states and 1545 transitions. [2021-11-20 07:22:31,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-20 07:22:31,836 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 87 [2021-11-20 07:22:31,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:22:31,840 INFO L225 Difference]: With dead ends: 1306 [2021-11-20 07:22:31,840 INFO L226 Difference]: Without dead ends: 1300 [2021-11-20 07:22:31,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-20 07:22:31,843 INFO L933 BasicCegarLoop]: 1031 mSDtfsCounter, 248 mSDsluCounter, 17428 mSDsCounter, 0 mSdLazyCounter, 1276 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 18459 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 1276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:22:31,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 18459 Invalid, 1461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 1276 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-20 07:22:31,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2021-11-20 07:22:31,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1274. [2021-11-20 07:22:31,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 837 states have (on average 1.7741935483870968) internal successors, (1485), 1268 states have internal predecessors, (1485), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-20 07:22:31,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 1492 transitions. [2021-11-20 07:22:31,871 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 1492 transitions. Word has length 87 [2021-11-20 07:22:31,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:22:31,871 INFO L470 AbstractCegarLoop]: Abstraction has 1274 states and 1492 transitions. [2021-11-20 07:22:31,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 07:22:31,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 1492 transitions. [2021-11-20 07:22:31,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-20 07:22:31,873 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:22:31,873 INFO L514 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:22:31,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-20 07:22:32,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:22:32,090 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-20 07:22:32,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:22:32,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1093833137, now seen corresponding path program 4 times [2021-11-20 07:22:32,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:22:32,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [327157116] [2021-11-20 07:22:32,091 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 07:22:32,091 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:22:32,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:22:32,092 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:22:32,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-20 07:22:32,376 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 07:22:32,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:22:32,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-20 07:22:32,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:22:33,543 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:22:33,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:22:37,447 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:22:37,447 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:22:37,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [327157116] [2021-11-20 07:22:37,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [327157116] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:22:37,447 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:22:37,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-20 07:22:37,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412218040] [2021-11-20 07:22:37,448 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:22:37,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-20 07:22:37,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:22:37,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-20 07:22:37,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-20 07:22:37,451 INFO L87 Difference]: Start difference. First operand 1274 states and 1492 transitions. Second operand has 66 states, 66 states have (on average 2.0303030303030303) internal successors, (134), 66 states have internal predecessors, (134), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 07:22:50,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:22:50,889 INFO L93 Difference]: Finished difference Result 1366 states and 1612 transitions. [2021-11-20 07:22:50,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-20 07:22:50,889 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0303030303030303) internal successors, (134), 66 states have internal predecessors, (134), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 103 [2021-11-20 07:22:50,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:22:50,893 INFO L225 Difference]: With dead ends: 1366 [2021-11-20 07:22:50,893 INFO L226 Difference]: Without dead ends: 1362 [2021-11-20 07:22:50,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-20 07:22:50,901 INFO L933 BasicCegarLoop]: 1047 mSDtfsCounter, 277 mSDsluCounter, 33351 mSDsCounter, 0 mSdLazyCounter, 4051 mSolverCounterSat, 499 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 34398 SdHoareTripleChecker+Invalid, 4550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 499 IncrementalHoareTripleChecker+Valid, 4051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:22:50,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 34398 Invalid, 4550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [499 Valid, 4051 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2021-11-20 07:22:50,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2021-11-20 07:22:50,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1304. [2021-11-20 07:22:50,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 867 states have (on average 1.7658592848904267) internal successors, (1531), 1298 states have internal predecessors, (1531), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-20 07:22:50,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 1538 transitions. [2021-11-20 07:22:50,931 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 1538 transitions. Word has length 103 [2021-11-20 07:22:50,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:22:50,931 INFO L470 AbstractCegarLoop]: Abstraction has 1304 states and 1538 transitions. [2021-11-20 07:22:50,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0303030303030303) internal successors, (134), 66 states have internal predecessors, (134), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 07:22:50,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 1538 transitions. [2021-11-20 07:22:50,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-20 07:22:50,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:22:50,933 INFO L514 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:22:50,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-11-20 07:22:51,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:22:51,149 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-20 07:22:51,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:22:51,149 INFO L85 PathProgramCache]: Analyzing trace with hash 2011177647, now seen corresponding path program 5 times [2021-11-20 07:22:51,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:22:51,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490205420] [2021-11-20 07:22:51,150 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 07:22:51,150 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:22:51,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:22:51,151 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:22:51,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e0d0eb-8127-4d28-88c6-71e05a279201/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-20 07:22:52,129 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-20 07:22:52,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:22:52,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 104 conjunts are in the unsatisfiable core [2021-11-20 07:22:52,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:22:52,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:22:52,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:22:52,598 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 07:22:52,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-11-20 07:22:52,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:22:52,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-20 07:22:52,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2021-11-20 07:22:52,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-20 07:30:10,191 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_#Ultimate.C_memset_#t~loopctr276_189| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_188| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_183| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_194| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_182| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_193| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_181| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_192| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_191| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_187| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_186| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_185| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_184| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_190| (_ BitVec 32))) (let ((.cse0 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_181|)) (.cse2 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_182|)) (.cse3 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_183|)) (.cse4 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_184|)) (.cse5 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_185|)) (.cse6 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_186|)) (.cse7 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_187|)) (.cse8 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_188|)) (.cse9 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_189|)) (.cse10 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_190|)) (.cse11 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_191|)) (.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_192|)) (.cse13 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_193|)) (.cse14 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_194|))) (and (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (store (store (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1) .cse5 .cse1) .cse6 .cse1) .cse7 .cse1) .cse8 .cse1) .cse9 .cse1) .cse10 .cse1) .cse11 .cse1) .cse12 .cse1) .cse13 .cse1) .cse14 .cse1))) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (store (store (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 (_ bv0 32)) .cse10 (_ bv0 32)) .cse11 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32))) |c_#memory_$Pointer$.base|)))) (exists ((v_arrayElimCell_14 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_14) (_ bv44 32)))) is different from false [2021-11-20 07:31:20,141 WARN L227 SmtUtils]: Spent 7.94s on a formula simplification that was a NOOP. DAG size: 85 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 07:32:37,602 WARN L227 SmtUtils]: Spent 6.94s on a formula simplification that was a NOOP. DAG size: 89 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 07:34:31,788 WARN L227 SmtUtils]: Spent 5.14s on a formula simplification that was a NOOP. DAG size: 93 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 07:34:40,132 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_14 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_14) (_ bv44 32))) (exists ((|v_#Ultimate.C_memset_#t~loopctr276_189| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_188| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_183| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_194| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_182| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_193| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_181| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_192| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_191| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_187| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_198| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_186| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_197| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_185| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_196| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_184| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_195| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_190| (_ BitVec 32))) (let ((.cse0 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_181|)) (.cse2 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_182|)) (.cse3 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_183|)) (.cse4 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_184|)) (.cse5 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_185|)) (.cse6 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_186|)) (.cse7 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_187|)) (.cse8 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_188|)) (.cse9 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_189|)) (.cse10 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_190|)) (.cse11 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_191|)) (.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_192|)) (.cse13 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_193|)) (.cse14 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_194|)) (.cse15 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_195|)) (.cse16 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_196|)) (.cse17 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_197|)) (.cse18 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_198|))) (and (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1) .cse5 .cse1) .cse6 .cse1) .cse7 .cse1) .cse8 .cse1) .cse9 .cse1) .cse10 .cse1) .cse11 .cse1) .cse12 .cse1) .cse13 .cse1) .cse14 .cse1) .cse15 .cse1) .cse16 .cse1) .cse17 .cse1) .cse18 .cse1))) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 (_ bv0 32)) .cse10 (_ bv0 32)) .cse11 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)) .cse16 (_ bv0 32)) .cse17 (_ bv0 32)) .cse18 (_ bv0 32))) |c_#memory_$Pointer$.base|))))) is different from false [2021-11-20 07:34:50,475 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_#Ultimate.C_memset_#t~loopctr276_189| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_188| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_199| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_183| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_194| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_182| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_193| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_181| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_192| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_191| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_187| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_198| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_186| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_197| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_185| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_196| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_184| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_195| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_190| (_ BitVec 32))) (let ((.cse0 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_181|)) (.cse1 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_182|)) (.cse2 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_183|)) (.cse3 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_184|)) (.cse4 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_185|)) (.cse5 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_186|)) (.cse6 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_187|)) (.cse7 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_188|)) (.cse8 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_189|)) (.cse9 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_190|)) (.cse10 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_191|)) (.cse11 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_192|)) (.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_193|)) (.cse13 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_194|)) (.cse14 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_195|)) (.cse15 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_196|)) (.cse16 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_197|)) (.cse17 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_198|)) (.cse18 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_199|))) (and (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse1 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 (_ bv0 32)) .cse10 (_ bv0 32)) .cse11 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)) .cse16 (_ bv0 32)) .cse17 (_ bv0 32)) .cse18 (_ bv0 32))) |c_#memory_$Pointer$.base|) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse19 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse19) .cse1 .cse19) .cse2 .cse19) .cse3 .cse19) .cse4 .cse19) .cse5 .cse19) .cse6 .cse19) .cse7 .cse19) .cse8 .cse19) .cse9 .cse19) .cse10 .cse19) .cse11 .cse19) .cse12 .cse19) .cse13 .cse19) .cse14 .cse19) .cse15 .cse19) .cse16 .cse19) .cse17 .cse19) .cse18 .cse19))) |c_#memory_$Pointer$.offset|)))) (exists ((v_arrayElimCell_14 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_14) (_ bv44 32)))) is different from false [2021-11-20 07:35:00,618 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_#Ultimate.C_memset_#t~loopctr276_189| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_200| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_188| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_199| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_183| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_194| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_182| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_193| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_181| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_192| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_191| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_187| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_198| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_186| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_197| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_185| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_196| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_184| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_195| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_190| (_ BitVec 32))) (let ((.cse0 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_181|)) (.cse2 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_182|)) (.cse3 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_183|)) (.cse4 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_184|)) (.cse5 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_185|)) (.cse6 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_186|)) (.cse7 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_187|)) (.cse8 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_188|)) (.cse9 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_189|)) (.cse10 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_190|)) (.cse11 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_191|)) (.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_192|)) (.cse13 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_193|)) (.cse14 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_194|)) (.cse15 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_195|)) (.cse16 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_196|)) (.cse17 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_197|)) (.cse18 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_198|)) (.cse19 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_199|)) (.cse20 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr276_200|))) (and (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1) .cse5 .cse1) .cse6 .cse1) .cse7 .cse1) .cse8 .cse1) .cse9 .cse1) .cse10 .cse1) .cse11 .cse1) .cse12 .cse1) .cse13 .cse1) .cse14 .cse1) .cse15 .cse1) .cse16 .cse1) .cse17 .cse1) .cse18 .cse1) .cse19 .cse1) .cse20 .cse1))) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 (_ bv0 32)) .cse10 (_ bv0 32)) .cse11 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)) .cse16 (_ bv0 32)) .cse17 (_ bv0 32)) .cse18 (_ bv0 32)) .cse19 (_ bv0 32)) .cse20 (_ bv0 32))) |c_#memory_$Pointer$.base|)))) (exists ((v_arrayElimCell_14 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_14) (_ bv44 32)))) is different from false