./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a379a11019678fc2a367efcf212f49fd3083d5f94e928c550866b32de723f686 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:29:41,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:29:41,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:29:41,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:29:41,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:29:41,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:29:41,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:29:41,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:29:41,802 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:29:41,809 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:29:41,810 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:29:41,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:29:41,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:29:41,816 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:29:41,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:29:41,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:29:41,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:29:41,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:29:41,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:29:41,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:29:41,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:29:41,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:29:41,848 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:29:41,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:29:41,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:29:41,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:29:41,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:29:41,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:29:41,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:29:41,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:29:41,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:29:41,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:29:41,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:29:41,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:29:41,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:29:41,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:29:41,867 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:29:41,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:29:41,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:29:41,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:29:41,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:29:41,870 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-19 13:29:41,914 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:29:41,914 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:29:41,922 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:29:41,923 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:29:41,923 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:29:41,923 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:29:41,923 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:29:41,923 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:29:41,924 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:29:41,924 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:29:41,925 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:29:41,925 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:29:41,925 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:29:41,926 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:29:41,926 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:29:41,926 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:29:41,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 13:29:41,927 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 13:29:41,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:29:41,928 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:29:41,928 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 13:29:41,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:29:41,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:29:41,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:29:41,929 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 13:29:41,929 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 13:29:41,931 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 13:29:41,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:29:41,931 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:29:41,931 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:29:41,932 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:29:41,932 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:29:41,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:29:41,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:29:41,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:29:41,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:29:41,933 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:29:41,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:29:41,934 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:29:41,934 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:29:41,934 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a379a11019678fc2a367efcf212f49fd3083d5f94e928c550866b32de723f686 [2021-11-19 13:29:42,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:29:42,307 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:29:42,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:29:42,311 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:29:42,312 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:29:42,313 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i [2021-11-19 13:29:42,385 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/data/71003235d/8dd4ea388a6f4624931338e16b5fb1df/FLAG7dd78a448 [2021-11-19 13:29:42,974 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:29:42,975 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i [2021-11-19 13:29:42,993 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/data/71003235d/8dd4ea388a6f4624931338e16b5fb1df/FLAG7dd78a448 [2021-11-19 13:29:43,213 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/data/71003235d/8dd4ea388a6f4624931338e16b5fb1df [2021-11-19 13:29:43,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:29:43,217 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:29:43,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:29:43,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:29:43,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:29:43,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:29:43" (1/1) ... [2021-11-19 13:29:43,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f9a3287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:29:43, skipping insertion in model container [2021-11-19 13:29:43,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:29:43" (1/1) ... [2021-11-19 13:29:43,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:29:43,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:29:43,877 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_4c539367-a5c5-4716-9a12-b00a6f4ce85c/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i[33021,33034] [2021-11-19 13:29:44,085 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_4c539367-a5c5-4716-9a12-b00a6f4ce85c/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i[44590,44603] [2021-11-19 13:29:44,100 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:29:44,122 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) [2021-11-19 13:29:44,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@496dfe29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:29:44, skipping insertion in model container [2021-11-19 13:29:44,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:29:44,124 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 13:29:44,126 INFO L158 Benchmark]: Toolchain (without parser) took 908.00ms. Allocated memory is still 115.3MB. Free memory was 74.7MB in the beginning and 79.8MB in the end (delta: -5.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 13:29:44,127 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 115.3MB. Free memory is still 94.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:29:44,128 INFO L158 Benchmark]: CACSL2BoogieTranslator took 904.63ms. Allocated memory is still 115.3MB. Free memory was 74.5MB in the beginning and 79.8MB in the end (delta: -5.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 13:29:44,130 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 115.3MB. Free memory is still 94.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 904.63ms. Allocated memory is still 115.3MB. Free memory was 74.5MB in the beginning and 79.8MB in the end (delta: -5.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 736]: 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_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a379a11019678fc2a367efcf212f49fd3083d5f94e928c550866b32de723f686 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:29:46,920 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:29:46,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:29:47,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:29:47,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:29:47,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:29:47,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:29:47,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:29:47,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:29:47,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:29:47,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:29:47,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:29:47,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:29:47,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:29:47,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:29:47,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:29:47,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:29:47,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:29:47,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:29:47,069 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:29:47,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:29:47,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:29:47,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:29:47,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:29:47,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:29:47,092 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:29:47,093 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:29:47,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:29:47,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:29:47,097 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:29:47,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:29:47,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:29:47,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:29:47,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:29:47,105 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:29:47,106 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:29:47,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:29:47,108 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:29:47,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:29:47,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:29:47,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:29:47,112 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-19 13:29:47,166 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:29:47,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:29:47,168 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:29:47,169 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:29:47,169 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:29:47,169 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:29:47,169 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:29:47,170 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:29:47,170 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:29:47,170 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:29:47,173 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 13:29:47,173 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 13:29:47,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:29:47,174 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:29:47,174 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 13:29:47,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:29:47,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:29:47,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:29:47,175 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 13:29:47,175 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 13:29:47,176 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 13:29:47,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:29:47,176 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:29:47,177 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:29:47,177 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:29:47,177 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:29:47,177 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:29:47,178 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:29:47,178 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:29:47,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:29:47,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:29:47,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:29:47,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:29:47,180 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:29:47,180 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:29:47,180 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:29:47,181 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:29:47,181 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_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a379a11019678fc2a367efcf212f49fd3083d5f94e928c550866b32de723f686 [2021-11-19 13:29:47,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:29:47,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:29:47,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:29:47,688 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:29:47,689 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:29:47,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i [2021-11-19 13:29:47,789 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/data/e5f149450/84f0a56bd8e34e2fa1cf24a0976ffa0f/FLAGa25d93298 [2021-11-19 13:29:48,668 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:29:48,669 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i [2021-11-19 13:29:48,696 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/data/e5f149450/84f0a56bd8e34e2fa1cf24a0976ffa0f/FLAGa25d93298 [2021-11-19 13:29:48,801 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/data/e5f149450/84f0a56bd8e34e2fa1cf24a0976ffa0f [2021-11-19 13:29:48,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:29:48,806 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:29:48,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:29:48,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:29:48,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:29:48,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:29:48" (1/1) ... [2021-11-19 13:29:48,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@402f689c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:29:48, skipping insertion in model container [2021-11-19 13:29:48,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:29:48" (1/1) ... [2021-11-19 13:29:48,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:29:48,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:29:49,462 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_4c539367-a5c5-4716-9a12-b00a6f4ce85c/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i[33021,33034] [2021-11-19 13:29:49,644 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_4c539367-a5c5-4716-9a12-b00a6f4ce85c/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i[44590,44603] [2021-11-19 13:29:49,665 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:29:49,685 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 13:29:49,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:29:49,779 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_4c539367-a5c5-4716-9a12-b00a6f4ce85c/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i[33021,33034] [2021-11-19 13:29:49,910 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_4c539367-a5c5-4716-9a12-b00a6f4ce85c/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i[44590,44603] [2021-11-19 13:29:49,915 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:29:49,921 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:29:49,969 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_4c539367-a5c5-4716-9a12-b00a6f4ce85c/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i[33021,33034] [2021-11-19 13:29:50,049 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_4c539367-a5c5-4716-9a12-b00a6f4ce85c/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i[44590,44603] [2021-11-19 13:29:50,052 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:29:50,133 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:29:50,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:29:50 WrapperNode [2021-11-19 13:29:50,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:29:50,135 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:29:50,135 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:29:50,135 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:29:50,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:29:50" (1/1) ... [2021-11-19 13:29:50,176 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:29:50" (1/1) ... [2021-11-19 13:29:50,274 INFO L137 Inliner]: procedures = 180, calls = 285, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1041 [2021-11-19 13:29:50,274 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:29:50,275 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:29:50,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:29:50,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:29:50,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:29:50" (1/1) ... [2021-11-19 13:29:50,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:29:50" (1/1) ... [2021-11-19 13:29:50,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:29:50" (1/1) ... [2021-11-19 13:29:50,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:29:50" (1/1) ... [2021-11-19 13:29:50,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:29:50" (1/1) ... [2021-11-19 13:29:50,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:29:50" (1/1) ... [2021-11-19 13:29:50,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:29:50" (1/1) ... [2021-11-19 13:29:50,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:29:50,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:29:50,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:29:50,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:29:50,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:29:50" (1/1) ... [2021-11-19 13:29:50,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:29:50,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:29:50,444 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:29:50,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:29:50,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 13:29:50,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 13:29:50,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 13:29:50,500 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 13:29:50,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 13:29:50,500 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 13:29:50,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 13:29:50,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:29:50,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 13:29:50,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:29:50,501 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 13:29:50,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 13:29:50,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:29:50,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 13:29:50,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:29:50,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:29:50,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:29:50,772 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:29:50,774 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:29:50,793 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 13:29:56,501 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:29:56,527 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:29:56,528 INFO L301 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-19 13:29:56,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:29:56 BoogieIcfgContainer [2021-11-19 13:29:56,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:29:56,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:29:56,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:29:56,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:29:56,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:29:48" (1/3) ... [2021-11-19 13:29:56,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1bb07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:29:56, skipping insertion in model container [2021-11-19 13:29:56,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:29:50" (2/3) ... [2021-11-19 13:29:56,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1bb07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:29:56, skipping insertion in model container [2021-11-19 13:29:56,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:29:56" (3/3) ... [2021-11-19 13:29:56,542 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test3-1.i [2021-11-19 13:29:56,548 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:29:56,548 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 534 error locations. [2021-11-19 13:29:56,611 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:29:56,619 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 [2021-11-19 13:29:56,620 INFO L340 AbstractCegarLoop]: Starting to check reachability of 534 error locations. [2021-11-19 13:29:56,660 INFO L276 IsEmpty]: Start isEmpty. Operand has 1072 states, 530 states have (on average 2.2452830188679247) internal successors, (1190), 1066 states have internal predecessors, (1190), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:29:56,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-19 13:29:56,667 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:29:56,668 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-19 13:29:56,668 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:29:56,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:29:56,675 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2021-11-19 13:29:56,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:29:56,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2037370199] [2021-11-19 13:29:56,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:29:56,691 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:29:56,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:29:56,695 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:29:56,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:29:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:29:56,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:29:56,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:29:56,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:29:56,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:29:56,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:29:56,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:29:56,978 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:29:56,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2037370199] [2021-11-19 13:29:56,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2037370199] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:29:56,984 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:29:56,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 13:29:56,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121290466] [2021-11-19 13:29:56,987 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:29:57,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:29:57,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:29:57,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:29:57,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:29:57,065 INFO L87 Difference]: Start difference. First operand has 1072 states, 530 states have (on average 2.2452830188679247) internal successors, (1190), 1066 states have internal predecessors, (1190), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) 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) [2021-11-19 13:29:59,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:29:59,369 INFO L93 Difference]: Finished difference Result 1067 states and 1132 transitions. [2021-11-19 13:29:59,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:29:59,372 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 [2021-11-19 13:29:59,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:29:59,407 INFO L225 Difference]: With dead ends: 1067 [2021-11-19 13:29:59,407 INFO L226 Difference]: Without dead ends: 1065 [2021-11-19 13:29:59,409 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 [2021-11-19 13:29:59,415 INFO L933 BasicCegarLoop]: 648 mSDtfsCounter, 990 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:29:59,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [998 Valid, 705 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 13:29:59,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2021-11-19 13:29:59,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1057. [2021-11-19 13:29:59,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 530 states have (on average 2.0886792452830187) internal successors, (1107), 1051 states have internal predecessors, (1107), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:29:59,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1123 transitions. [2021-11-19 13:29:59,549 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1123 transitions. Word has length 3 [2021-11-19 13:29:59,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:29:59,551 INFO L470 AbstractCegarLoop]: Abstraction has 1057 states and 1123 transitions. [2021-11-19 13:29:59,551 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) [2021-11-19 13:29:59,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1123 transitions. [2021-11-19 13:29:59,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-19 13:29:59,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:29:59,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-19 13:29:59,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:29:59,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:29:59,754 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:29:59,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:29:59,754 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2021-11-19 13:29:59,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:29:59,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365707313] [2021-11-19 13:29:59,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:29:59,755 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:29:59,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:29:59,757 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:29:59,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:29:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:29:59,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:29:59,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:29:59,913 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 [2021-11-19 13:29:59,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:29:59,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:29:59,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:29:59,982 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:29:59,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365707313] [2021-11-19 13:29:59,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1365707313] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:29:59,983 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:29:59,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 13:29:59,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783954348] [2021-11-19 13:29:59,983 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:29:59,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:29:59,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:29:59,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:29:59,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:29:59,986 INFO L87 Difference]: Start difference. First operand 1057 states and 1123 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) [2021-11-19 13:30:04,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:04,807 INFO L93 Difference]: Finished difference Result 1542 states and 1651 transitions. [2021-11-19 13:30:04,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:30:04,808 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 [2021-11-19 13:30:04,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:04,818 INFO L225 Difference]: With dead ends: 1542 [2021-11-19 13:30:04,818 INFO L226 Difference]: Without dead ends: 1542 [2021-11-19 13:30:04,819 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 [2021-11-19 13:30:04,820 INFO L933 BasicCegarLoop]: 792 mSDtfsCounter, 1167 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:04,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1177 Valid, 1592 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-11-19 13:30:04,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2021-11-19 13:30:04,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1092. [2021-11-19 13:30:04,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 574 states have (on average 2.0662020905923346) internal successors, (1186), 1086 states have internal predecessors, (1186), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:30:04,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1202 transitions. [2021-11-19 13:30:04,860 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1202 transitions. Word has length 3 [2021-11-19 13:30:04,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:04,860 INFO L470 AbstractCegarLoop]: Abstraction has 1092 states and 1202 transitions. [2021-11-19 13:30:04,860 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) [2021-11-19 13:30:04,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1202 transitions. [2021-11-19 13:30:04,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 13:30:04,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:04,861 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:04,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-19 13:30:05,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:30:05,069 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:30:05,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:05,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2021-11-19 13:30:05,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:30:05,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [113414355] [2021-11-19 13:30:05,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:05,074 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:30:05,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:30:05,075 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:30:05,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 13:30:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:05,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:30:05,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:05,204 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 [2021-11-19 13:30:05,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:05,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:05,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:05,254 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:30:05,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [113414355] [2021-11-19 13:30:05,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [113414355] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:05,254 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:05,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 13:30:05,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579907455] [2021-11-19 13:30:05,255 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:05,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:30:05,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:30:05,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:30:05,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:30:05,257 INFO L87 Difference]: Start difference. First operand 1092 states and 1202 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) [2021-11-19 13:30:07,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:07,484 INFO L93 Difference]: Finished difference Result 1420 states and 1555 transitions. [2021-11-19 13:30:07,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:30:07,487 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 [2021-11-19 13:30:07,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:07,497 INFO L225 Difference]: With dead ends: 1420 [2021-11-19 13:30:07,497 INFO L226 Difference]: Without dead ends: 1420 [2021-11-19 13:30:07,498 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 [2021-11-19 13:30:07,499 INFO L933 BasicCegarLoop]: 955 mSDtfsCounter, 992 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:07,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1000 Valid, 1201 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 13:30:07,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2021-11-19 13:30:07,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1043. [2021-11-19 13:30:07,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 574 states have (on average 1.975609756097561) internal successors, (1134), 1037 states have internal predecessors, (1134), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:30:07,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1150 transitions. [2021-11-19 13:30:07,536 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1150 transitions. Word has length 8 [2021-11-19 13:30:07,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:07,537 INFO L470 AbstractCegarLoop]: Abstraction has 1043 states and 1150 transitions. [2021-11-19 13:30:07,537 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) [2021-11-19 13:30:07,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1150 transitions. [2021-11-19 13:30:07,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 13:30:07,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:07,539 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:07,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:07,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:30:07,752 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:30:07,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:07,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2021-11-19 13:30:07,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:30:07,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770523369] [2021-11-19 13:30:07,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:07,754 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:30:07,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:30:07,755 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:30:07,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 13:30:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:07,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:30:07,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:07,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:30:07,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:07,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:08,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:08,103 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:30:08,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770523369] [2021-11-19 13:30:08,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1770523369] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:08,104 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:08,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 13:30:08,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516925787] [2021-11-19 13:30:08,105 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:08,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:30:08,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:30:08,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:30:08,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:30:08,107 INFO L87 Difference]: Start difference. First operand 1043 states and 1150 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) [2021-11-19 13:30:13,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:13,301 INFO L93 Difference]: Finished difference Result 1463 states and 1562 transitions. [2021-11-19 13:30:13,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:30:13,304 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 [2021-11-19 13:30:13,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:13,340 INFO L225 Difference]: With dead ends: 1463 [2021-11-19 13:30:13,340 INFO L226 Difference]: Without dead ends: 1463 [2021-11-19 13:30:13,341 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 [2021-11-19 13:30:13,342 INFO L933 BasicCegarLoop]: 1128 mSDtfsCounter, 1407 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:13,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1413 Valid, 1556 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-11-19 13:30:13,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2021-11-19 13:30:13,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1033. [2021-11-19 13:30:13,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 574 states have (on average 1.9529616724738676) internal successors, (1121), 1027 states have internal predecessors, (1121), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:30:13,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1137 transitions. [2021-11-19 13:30:13,390 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1137 transitions. Word has length 8 [2021-11-19 13:30:13,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:13,391 INFO L470 AbstractCegarLoop]: Abstraction has 1033 states and 1137 transitions. [2021-11-19 13:30:13,393 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) [2021-11-19 13:30:13,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1137 transitions. [2021-11-19 13:30:13,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 13:30:13,394 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:13,395 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:13,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:13,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:30:13,608 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr526REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:30:13,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:13,609 INFO L85 PathProgramCache]: Analyzing trace with hash 871377621, now seen corresponding path program 1 times [2021-11-19 13:30:13,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:30:13,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1777690054] [2021-11-19 13:30:13,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:13,610 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:30:13,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:30:13,612 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:30:13,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 13:30:13,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:13,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:30:13,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:13,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:13,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:13,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:13,967 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:30:13,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1777690054] [2021-11-19 13:30:13,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1777690054] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:13,968 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:13,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 13:30:13,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518368927] [2021-11-19 13:30:13,968 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:13,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:30:13,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:30:13,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:30:13,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:30:13,971 INFO L87 Difference]: Start difference. First operand 1033 states and 1137 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) [2021-11-19 13:30:14,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:14,945 INFO L93 Difference]: Finished difference Result 1479 states and 1615 transitions. [2021-11-19 13:30:14,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:30:14,946 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 [2021-11-19 13:30:14,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:14,954 INFO L225 Difference]: With dead ends: 1479 [2021-11-19 13:30:14,955 INFO L226 Difference]: Without dead ends: 1479 [2021-11-19 13:30:14,955 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 [2021-11-19 13:30:14,956 INFO L933 BasicCegarLoop]: 1116 mSDtfsCounter, 547 mSDsluCounter, 1909 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:14,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 3025 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 13:30:14,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2021-11-19 13:30:14,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 1269. [2021-11-19 13:30:14,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 810 states have (on average 1.9395061728395062) internal successors, (1571), 1263 states have internal predecessors, (1571), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:30:14,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1587 transitions. [2021-11-19 13:30:14,993 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1587 transitions. Word has length 11 [2021-11-19 13:30:14,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:14,994 INFO L470 AbstractCegarLoop]: Abstraction has 1269 states and 1587 transitions. [2021-11-19 13:30:14,994 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) [2021-11-19 13:30:14,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1587 transitions. [2021-11-19 13:30:14,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 13:30:14,995 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:14,995 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:15,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:15,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:30:15,209 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr532ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:30:15,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:15,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1242903717, now seen corresponding path program 1 times [2021-11-19 13:30:15,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:30:15,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672067696] [2021-11-19 13:30:15,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:15,214 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:30:15,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:30:15,215 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:30:15,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 13:30:15,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:15,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:30:15,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:15,396 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:30:15,397 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:30:15,398 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:30:15,463 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-19 13:30:15,464 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 [2021-11-19 13:30:15,534 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-19 13:30:15,535 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 [2021-11-19 13:30:15,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:15,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:15,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:15,639 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:30:15,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672067696] [2021-11-19 13:30:15,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672067696] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:15,639 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:15,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 13:30:15,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902585601] [2021-11-19 13:30:15,640 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:15,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:30:15,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:30:15,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:30:15,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:30:15,641 INFO L87 Difference]: Start difference. First operand 1269 states and 1587 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 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) [2021-11-19 13:30:17,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:17,076 INFO L93 Difference]: Finished difference Result 1643 states and 2031 transitions. [2021-11-19 13:30:17,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:30:17,076 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 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 12 [2021-11-19 13:30:17,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:17,085 INFO L225 Difference]: With dead ends: 1643 [2021-11-19 13:30:17,085 INFO L226 Difference]: Without dead ends: 1643 [2021-11-19 13:30:17,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:30:17,087 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 746 mSDsluCounter, 2891 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 3895 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:17,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [751 Valid, 3895 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-19 13:30:17,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2021-11-19 13:30:17,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 1268. [2021-11-19 13:30:17,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 809 states have (on average 1.9394313967861558) internal successors, (1569), 1262 states have internal predecessors, (1569), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:30:17,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1585 transitions. [2021-11-19 13:30:17,128 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1585 transitions. Word has length 12 [2021-11-19 13:30:17,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:17,128 INFO L470 AbstractCegarLoop]: Abstraction has 1268 states and 1585 transitions. [2021-11-19 13:30:17,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 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) [2021-11-19 13:30:17,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1585 transitions. [2021-11-19 13:30:17,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 13:30:17,130 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:17,130 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:17,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:17,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:30:17,350 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:30:17,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:17,352 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2021-11-19 13:30:17,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:30:17,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680219596] [2021-11-19 13:30:17,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:17,354 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:30:17,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:30:17,355 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:30:17,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 13:30:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:17,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:30:17,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:17,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:17,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:17,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:17,582 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:30:17,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680219596] [2021-11-19 13:30:17,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1680219596] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:17,583 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:17,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:30:17,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605977287] [2021-11-19 13:30:17,583 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:17,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:30:17,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:30:17,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:30:17,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:30:17,584 INFO L87 Difference]: Start difference. First operand 1268 states and 1585 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) [2021-11-19 13:30:17,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:17,609 INFO L93 Difference]: Finished difference Result 1208 states and 1499 transitions. [2021-11-19 13:30:17,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:30:17,610 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 [2021-11-19 13:30:17,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:17,615 INFO L225 Difference]: With dead ends: 1208 [2021-11-19 13:30:17,615 INFO L226 Difference]: Without dead ends: 1208 [2021-11-19 13:30:17,616 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 [2021-11-19 13:30:17,617 INFO L933 BasicCegarLoop]: 1007 mSDtfsCounter, 976 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 1071 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 [2021-11-19 13:30:17,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [984 Valid, 1071 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:30:17,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2021-11-19 13:30:17,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 1208. [2021-11-19 13:30:17,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 773 states have (on average 1.9184993531694696) internal successors, (1483), 1202 states have internal predecessors, (1483), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:30:17,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1499 transitions. [2021-11-19 13:30:17,645 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1499 transitions. Word has length 18 [2021-11-19 13:30:17,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:17,646 INFO L470 AbstractCegarLoop]: Abstraction has 1208 states and 1499 transitions. [2021-11-19 13:30:17,646 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) [2021-11-19 13:30:17,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1499 transitions. [2021-11-19 13:30:17,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 13:30:17,647 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:17,647 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] [2021-11-19 13:30:17,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:17,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:30:17,862 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:30:17,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:17,863 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2021-11-19 13:30:17,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:30:17,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [241475573] [2021-11-19 13:30:17,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:17,864 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:30:17,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:30:17,865 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:30:17,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 13:30:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:18,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:30:18,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:18,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:18,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:18,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:18,115 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:30:18,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [241475573] [2021-11-19 13:30:18,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [241475573] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:18,116 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:18,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 13:30:18,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970384246] [2021-11-19 13:30:18,116 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:18,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:30:18,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:30:18,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:30:18,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:30:18,119 INFO L87 Difference]: Start difference. First operand 1208 states and 1499 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) [2021-11-19 13:30:18,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:18,213 INFO L93 Difference]: Finished difference Result 1180 states and 1443 transitions. [2021-11-19 13:30:18,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:30:18,214 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 [2021-11-19 13:30:18,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:18,218 INFO L225 Difference]: With dead ends: 1180 [2021-11-19 13:30:18,218 INFO L226 Difference]: Without dead ends: 1180 [2021-11-19 13:30:18,218 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 [2021-11-19 13:30:18,219 INFO L933 BasicCegarLoop]: 962 mSDtfsCounter, 1884 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1892 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:18,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1892 Valid, 1949 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:30:18,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2021-11-19 13:30:18,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1178. [2021-11-19 13:30:18,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 757 states have (on average 1.8824306472919419) internal successors, (1425), 1172 states have internal predecessors, (1425), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:30:18,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1441 transitions. [2021-11-19 13:30:18,247 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1441 transitions. Word has length 20 [2021-11-19 13:30:18,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:18,247 INFO L470 AbstractCegarLoop]: Abstraction has 1178 states and 1441 transitions. [2021-11-19 13:30:18,248 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) [2021-11-19 13:30:18,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1441 transitions. [2021-11-19 13:30:18,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 13:30:18,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:18,249 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] [2021-11-19 13:30:18,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:18,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:30:18,462 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:30:18,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:18,462 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2021-11-19 13:30:18,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:30:18,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262689396] [2021-11-19 13:30:18,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:18,463 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:30:18,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:30:18,464 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:30:18,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 13:30:18,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:18,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:30:18,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:18,635 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 [2021-11-19 13:30:18,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:18,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:18,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:18,881 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:30:18,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262689396] [2021-11-19 13:30:18,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1262689396] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:18,882 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:18,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 13:30:18,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112082416] [2021-11-19 13:30:18,882 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:18,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:30:18,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:30:18,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:30:18,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:30:18,883 INFO L87 Difference]: Start difference. First operand 1178 states and 1441 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) [2021-11-19 13:30:20,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:20,885 INFO L93 Difference]: Finished difference Result 1660 states and 2054 transitions. [2021-11-19 13:30:20,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:30:20,886 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 [2021-11-19 13:30:20,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:20,893 INFO L225 Difference]: With dead ends: 1660 [2021-11-19 13:30:20,893 INFO L226 Difference]: Without dead ends: 1660 [2021-11-19 13:30:20,894 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 [2021-11-19 13:30:20,895 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 1738 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1743 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:20,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1743 Valid, 1063 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-19 13:30:20,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2021-11-19 13:30:20,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1174. [2021-11-19 13:30:20,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 757 states have (on average 1.8718626155878468) internal successors, (1417), 1168 states have internal predecessors, (1417), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:30:20,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1433 transitions. [2021-11-19 13:30:20,925 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1433 transitions. Word has length 34 [2021-11-19 13:30:20,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:20,926 INFO L470 AbstractCegarLoop]: Abstraction has 1174 states and 1433 transitions. [2021-11-19 13:30:20,926 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) [2021-11-19 13:30:20,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1433 transitions. [2021-11-19 13:30:20,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 13:30:20,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:20,928 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] [2021-11-19 13:30:20,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:21,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:30:21,140 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:30:21,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:21,140 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2021-11-19 13:30:21,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:30:21,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [826276560] [2021-11-19 13:30:21,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:21,141 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:30:21,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:30:21,142 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:30:21,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 13:30:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:21,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:30:21,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:21,282 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 [2021-11-19 13:30:21,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:21,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:22,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:22,058 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:30:22,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [826276560] [2021-11-19 13:30:22,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [826276560] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:22,059 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:22,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 13:30:22,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004932756] [2021-11-19 13:30:22,059 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:22,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:30:22,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:30:22,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:30:22,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:30:22,060 INFO L87 Difference]: Start difference. First operand 1174 states and 1433 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) [2021-11-19 13:30:30,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:30,037 INFO L93 Difference]: Finished difference Result 1791 states and 2207 transitions. [2021-11-19 13:30:30,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:30:30,039 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 [2021-11-19 13:30:30,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:30,049 INFO L225 Difference]: With dead ends: 1791 [2021-11-19 13:30:30,049 INFO L226 Difference]: Without dead ends: 1791 [2021-11-19 13:30:30,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:30:30,051 INFO L933 BasicCegarLoop]: 1204 mSDtfsCounter, 1279 mSDsluCounter, 1712 mSDsCounter, 0 mSdLazyCounter, 2054 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1284 SdHoareTripleChecker+Valid, 2916 SdHoareTripleChecker+Invalid, 2075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:30,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1284 Valid, 2916 Invalid, 2075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2054 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2021-11-19 13:30:30,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2021-11-19 13:30:30,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1170. [2021-11-19 13:30:30,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 757 states have (on average 1.8612945838837516) internal successors, (1409), 1164 states have internal predecessors, (1409), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:30:30,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1425 transitions. [2021-11-19 13:30:30,086 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1425 transitions. Word has length 34 [2021-11-19 13:30:30,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:30,087 INFO L470 AbstractCegarLoop]: Abstraction has 1170 states and 1425 transitions. [2021-11-19 13:30:30,088 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) [2021-11-19 13:30:30,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1425 transitions. [2021-11-19 13:30:30,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-19 13:30:30,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:30,090 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] [2021-11-19 13:30:30,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:30,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:30:30,305 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:30:30,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:30,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2021-11-19 13:30:30,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:30:30,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565779720] [2021-11-19 13:30:30,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:30,308 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:30:30,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:30:30,310 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:30:30,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 13:30:30,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:30,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:30:30,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:30,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:30,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:30,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:30,834 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:30:30,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565779720] [2021-11-19 13:30:30,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565779720] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:30,835 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:30,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 13:30:30,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151157850] [2021-11-19 13:30:30,835 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:30,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:30:30,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:30:30,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:30:30,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:30:30,837 INFO L87 Difference]: Start difference. First operand 1170 states and 1425 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) [2021-11-19 13:30:30,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:30,911 INFO L93 Difference]: Finished difference Result 1158 states and 1405 transitions. [2021-11-19 13:30:30,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:30:30,912 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 [2021-11-19 13:30:30,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:30,920 INFO L225 Difference]: With dead ends: 1158 [2021-11-19 13:30:30,920 INFO L226 Difference]: Without dead ends: 1158 [2021-11-19 13:30:30,920 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 [2021-11-19 13:30:30,921 INFO L933 BasicCegarLoop]: 956 mSDtfsCounter, 923 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 1927 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 [2021-11-19 13:30:30,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [931 Valid, 1927 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:30:30,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2021-11-19 13:30:30,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1158. [2021-11-19 13:30:30,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 745 states have (on average 1.8644295302013423) internal successors, (1389), 1152 states have internal predecessors, (1389), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:30:30,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1405 transitions. [2021-11-19 13:30:30,950 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1405 transitions. Word has length 52 [2021-11-19 13:30:30,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:30,950 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 1405 transitions. [2021-11-19 13:30:30,951 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) [2021-11-19 13:30:30,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1405 transitions. [2021-11-19 13:30:30,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-19 13:30:30,953 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:30,953 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] [2021-11-19 13:30:30,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:31,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:30:31,169 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:30:31,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:31,169 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2021-11-19 13:30:31,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:30:31,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281200713] [2021-11-19 13:30:31,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:31,171 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:30:31,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:30:31,172 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:30:31,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 13:30:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:31,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:30:31,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:31,494 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 [2021-11-19 13:30:31,503 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 [2021-11-19 13:30:32,356 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 13:30:32,357 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 27 treesize of output 29 [2021-11-19 13:30:32,384 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 13:30:32,384 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 26 treesize of output 22 [2021-11-19 13:30:32,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:32,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:40,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:40,001 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:30:40,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281200713] [2021-11-19 13:30:40,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281200713] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:40,002 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:40,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 13:30:40,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495450703] [2021-11-19 13:30:40,003 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:40,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:30:40,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:30:40,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:30:40,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=15, Unknown=2, NotChecked=0, Total=30 [2021-11-19 13:30:40,005 INFO L87 Difference]: Start difference. First operand 1158 states and 1405 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) [2021-11-19 13:30:46,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:46,240 INFO L93 Difference]: Finished difference Result 1769 states and 2114 transitions. [2021-11-19 13:30:46,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:30:46,241 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 [2021-11-19 13:30:46,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:46,251 INFO L225 Difference]: With dead ends: 1769 [2021-11-19 13:30:46,251 INFO L226 Difference]: Without dead ends: 1769 [2021-11-19 13:30:46,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=19, Invalid=21, Unknown=2, NotChecked=0, Total=42 [2021-11-19 13:30:46,252 INFO L933 BasicCegarLoop]: 715 mSDtfsCounter, 1532 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 1434 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 2552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1074 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:46,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1536 Valid, 1868 Invalid, 2552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1434 Invalid, 0 Unknown, 1074 Unchecked, 6.1s Time] [2021-11-19 13:30:46,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2021-11-19 13:30:46,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1136. [2021-11-19 13:30:46,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 755 states have (on average 1.8211920529801324) internal successors, (1375), 1130 states have internal predecessors, (1375), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:30:46,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1391 transitions. [2021-11-19 13:30:46,288 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1391 transitions. Word has length 60 [2021-11-19 13:30:46,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:46,289 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1391 transitions. [2021-11-19 13:30:46,289 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) [2021-11-19 13:30:46,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1391 transitions. [2021-11-19 13:30:46,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-19 13:30:46,291 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:46,291 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] [2021-11-19 13:30:46,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:46,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:30:46,505 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:30:46,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:46,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1192602638, now seen corresponding path program 1 times [2021-11-19 13:30:46,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:30:46,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005684446] [2021-11-19 13:30:46,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:46,507 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:30:46,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:30:46,508 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:30:46,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 13:30:46,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:46,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:30:46,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:47,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:47,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:47,139 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 [2021-11-19 13:30:47,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:47,497 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:30:47,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005684446] [2021-11-19 13:30:47,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2005684446] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:47,497 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:47,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 13:30:47,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084880823] [2021-11-19 13:30:47,498 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:47,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:30:47,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:30:47,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:30:47,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:30:47,499 INFO L87 Difference]: Start difference. First operand 1136 states and 1391 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) [2021-11-19 13:30:49,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:49,792 INFO L93 Difference]: Finished difference Result 1134 states and 1389 transitions. [2021-11-19 13:30:49,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:30:49,793 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 [2021-11-19 13:30:49,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:49,799 INFO L225 Difference]: With dead ends: 1134 [2021-11-19 13:30:49,800 INFO L226 Difference]: Without dead ends: 1134 [2021-11-19 13:30:49,800 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 [2021-11-19 13:30:49,801 INFO L933 BasicCegarLoop]: 515 mSDtfsCounter, 2527 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2530 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:49,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2530 Valid, 562 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 13:30:49,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2021-11-19 13:30:49,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1134. [2021-11-19 13:30:49,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 755 states have (on average 1.818543046357616) internal successors, (1373), 1128 states have internal predecessors, (1373), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:30:49,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1389 transitions. [2021-11-19 13:30:49,827 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1389 transitions. Word has length 62 [2021-11-19 13:30:49,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:49,828 INFO L470 AbstractCegarLoop]: Abstraction has 1134 states and 1389 transitions. [2021-11-19 13:30:49,828 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) [2021-11-19 13:30:49,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1389 transitions. [2021-11-19 13:30:49,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 13:30:49,829 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:49,830 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] [2021-11-19 13:30:49,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:50,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:30:50,030 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:30:50,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:50,031 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2021-11-19 13:30:50,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:30:50,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1949779333] [2021-11-19 13:30:50,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:50,032 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:30:50,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:30:50,033 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:30:50,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 13:30:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:50,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:30:50,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:50,429 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 [2021-11-19 13:30:50,449 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 [2021-11-19 13:30:50,503 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 [2021-11-19 13:30:50,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:50,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:50,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:50,686 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:30:50,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1949779333] [2021-11-19 13:30:50,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1949779333] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:50,687 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:50,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 13:30:50,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875149551] [2021-11-19 13:30:50,687 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:50,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:30:50,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:30:50,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:30:50,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:30:50,689 INFO L87 Difference]: Start difference. First operand 1134 states and 1389 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) [2021-11-19 13:30:54,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:54,164 INFO L93 Difference]: Finished difference Result 1133 states and 1388 transitions. [2021-11-19 13:30:54,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:30:54,164 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 [2021-11-19 13:30:54,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:54,170 INFO L225 Difference]: With dead ends: 1133 [2021-11-19 13:30:54,170 INFO L226 Difference]: Without dead ends: 1133 [2021-11-19 13:30:54,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:30:54,171 INFO L933 BasicCegarLoop]: 920 mSDtfsCounter, 4 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2377 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:54,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2377 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-19 13:30:54,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2021-11-19 13:30:54,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1133. [2021-11-19 13:30:54,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 755 states have (on average 1.8172185430463577) internal successors, (1372), 1127 states have internal predecessors, (1372), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:30:54,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1388 transitions. [2021-11-19 13:30:54,200 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1388 transitions. Word has length 65 [2021-11-19 13:30:54,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:54,200 INFO L470 AbstractCegarLoop]: Abstraction has 1133 states and 1388 transitions. [2021-11-19 13:30:54,201 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) [2021-11-19 13:30:54,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1388 transitions. [2021-11-19 13:30:54,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 13:30:54,202 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:54,202 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] [2021-11-19 13:30:54,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:54,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:30:54,418 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:30:54,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:54,419 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2021-11-19 13:30:54,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:30:54,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [491091407] [2021-11-19 13:30:54,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:54,420 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:30:54,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:30:54,422 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:30:54,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 13:30:54,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:54,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 13:30:54,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:54,800 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 [2021-11-19 13:30:54,829 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 [2021-11-19 13:30:54,842 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 [2021-11-19 13:30:54,909 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 [2021-11-19 13:30:54,914 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 [2021-11-19 13:30:54,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:54,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:55,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:55,317 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:30:55,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [491091407] [2021-11-19 13:30:55,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [491091407] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:55,317 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:55,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 13:30:55,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453532018] [2021-11-19 13:30:55,317 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:55,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:30:55,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:30:55,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:30:55,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:30:55,319 INFO L87 Difference]: Start difference. First operand 1133 states and 1388 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) [2021-11-19 13:31:04,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:04,512 INFO L93 Difference]: Finished difference Result 1132 states and 1387 transitions. [2021-11-19 13:31:04,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:31:04,513 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 [2021-11-19 13:31:04,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:04,519 INFO L225 Difference]: With dead ends: 1132 [2021-11-19 13:31:04,519 INFO L226 Difference]: Without dead ends: 1132 [2021-11-19 13:31:04,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:31:04,520 INFO L933 BasicCegarLoop]: 920 mSDtfsCounter, 4 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2400 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:04,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2400 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2021-11-19 13:31:04,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2021-11-19 13:31:04,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1132. [2021-11-19 13:31:04,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1132 states, 754 states have (on average 1.8183023872679045) internal successors, (1371), 1126 states have internal predecessors, (1371), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 13:31:04,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1387 transitions. [2021-11-19 13:31:04,546 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1387 transitions. Word has length 65 [2021-11-19 13:31:04,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:04,547 INFO L470 AbstractCegarLoop]: Abstraction has 1132 states and 1387 transitions. [2021-11-19 13:31:04,547 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) [2021-11-19 13:31:04,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1387 transitions. [2021-11-19 13:31:04,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-19 13:31:04,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:04,549 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] [2021-11-19 13:31:04,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-19 13:31:04,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:31:04,764 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:31:04,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:04,764 INFO L85 PathProgramCache]: Analyzing trace with hash 845908815, now seen corresponding path program 1 times [2021-11-19 13:31:04,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:31:04,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1534358217] [2021-11-19 13:31:04,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:04,765 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:31:04,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:31:04,766 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:31:04,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 13:31:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:04,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:31:04,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:31:05,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:05,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:31:05,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:05,274 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:31:05,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1534358217] [2021-11-19 13:31:05,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1534358217] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:05,274 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:31:05,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 13:31:05,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007863237] [2021-11-19 13:31:05,274 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:05,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:31:05,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:31:05,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:31:05,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:31:05,275 INFO L87 Difference]: Start difference. First operand 1132 states and 1387 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) [2021-11-19 13:31:05,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:05,371 INFO L93 Difference]: Finished difference Result 1142 states and 1400 transitions. [2021-11-19 13:31:05,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:31:05,373 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 [2021-11-19 13:31:05,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:05,382 INFO L225 Difference]: With dead ends: 1142 [2021-11-19 13:31:05,382 INFO L226 Difference]: Without dead ends: 1142 [2021-11-19 13:31:05,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:31:05,384 INFO L933 BasicCegarLoop]: 920 mSDtfsCounter, 9 mSDsluCounter, 1834 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2754 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:05,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 2754 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:31:05,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2021-11-19 13:31:05,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 1142. [2021-11-19 13:31:05,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 762 states have (on average 1.81496062992126) internal successors, (1383), 1135 states have internal predecessors, (1383), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-19 13:31:05,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1400 transitions. [2021-11-19 13:31:05,417 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1400 transitions. Word has length 73 [2021-11-19 13:31:05,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:05,417 INFO L470 AbstractCegarLoop]: Abstraction has 1142 states and 1400 transitions. [2021-11-19 13:31:05,418 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) [2021-11-19 13:31:05,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1400 transitions. [2021-11-19 13:31:05,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-19 13:31:05,419 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:05,419 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] [2021-11-19 13:31:05,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 13:31:05,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:31:05,635 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:31:05,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:05,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1863463505, now seen corresponding path program 1 times [2021-11-19 13:31:05,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:31:05,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [244431616] [2021-11-19 13:31:05,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:05,637 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:31:05,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:31:05,638 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:31:05,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 13:31:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:05,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:31:05,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:31:06,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:06,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:31:06,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:06,351 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:31:06,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [244431616] [2021-11-19 13:31:06,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [244431616] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:31:06,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [222163914] [2021-11-19 13:31:06,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:06,352 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:31:06,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:31:06,361 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:31:06,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-19 13:31:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:06,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:31:06,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:31:06,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:06,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:31:06,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:06,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [222163914] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:31:06,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020173407] [2021-11-19 13:31:06,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:06,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:31:06,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:31:06,943 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:31:06,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-19 13:31:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:07,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:31:07,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:31:07,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:07,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:31:07,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:07,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020173407] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:31:07,637 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:31:07,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-19 13:31:07,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650386694] [2021-11-19 13:31:07,638 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:31:07,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 13:31:07,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:31:07,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 13:31:07,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-19 13:31:07,640 INFO L87 Difference]: Start difference. First operand 1142 states and 1400 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 13:31:08,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:08,254 INFO L93 Difference]: Finished difference Result 1156 states and 1417 transitions. [2021-11-19 13:31:08,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 13:31:08,255 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 75 [2021-11-19 13:31:08,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:08,261 INFO L225 Difference]: With dead ends: 1156 [2021-11-19 13:31:08,261 INFO L226 Difference]: Without dead ends: 1150 [2021-11-19 13:31:08,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-19 13:31:08,262 INFO L933 BasicCegarLoop]: 921 mSDtfsCounter, 26 mSDsluCounter, 4583 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 5504 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:08,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 5504 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:31:08,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2021-11-19 13:31:08,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1148. [2021-11-19 13:31:08,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 768 states have (on average 1.8098958333333333) internal successors, (1390), 1141 states have internal predecessors, (1390), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-19 13:31:08,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 1407 transitions. [2021-11-19 13:31:08,292 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 1407 transitions. Word has length 75 [2021-11-19 13:31:08,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:08,293 INFO L470 AbstractCegarLoop]: Abstraction has 1148 states and 1407 transitions. [2021-11-19 13:31:08,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 13:31:08,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 1407 transitions. [2021-11-19 13:31:08,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-19 13:31:08,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:08,295 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] [2021-11-19 13:31:08,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 13:31:08,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-19 13:31:08,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2021-11-19 13:31:08,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:31:08,910 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:31:08,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:08,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1287850607, now seen corresponding path program 2 times [2021-11-19 13:31:08,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:31:08,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258584525] [2021-11-19 13:31:08,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:31:08,911 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:31:08,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:31:08,912 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:31:08,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 13:31:09,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:31:09,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:31:09,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 13:31:09,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:31:09,597 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:09,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:31:10,117 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:10,117 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:31:10,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [258584525] [2021-11-19 13:31:10,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [258584525] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:31:10,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1889109175] [2021-11-19 13:31:10,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:31:10,118 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:31:10,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:31:10,119 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:31:10,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-19 13:31:10,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:31:10,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:31:10,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 13:31:10,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:31:11,075 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:11,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:31:11,327 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:11,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1889109175] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:31:11,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747797825] [2021-11-19 13:31:11,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:31:11,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:31:11,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:31:11,329 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:31:11,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-19 13:31:32,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:31:32,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:31:32,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-19 13:31:32,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:31:32,991 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 [2021-11-19 13:31:33,263 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 [2021-11-19 13:31:33,277 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 13:31:33,277 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 [2021-11-19 13:31:33,340 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 [2021-11-19 13:31:33,362 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 [2021-11-19 13:31:33,570 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 31 treesize of output 19 [2021-11-19 13:31:33,577 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 19 treesize of output 13 [2021-11-19 13:33:50,680 WARN L227 SmtUtils]: Spent 28.45s on a formula simplification. DAG size of input: 114 DAG size of output: 34 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 13:33:50,681 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-19 13:33:50,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 143 treesize of output 135 [2021-11-19 13:34:06,780 WARN L227 SmtUtils]: Spent 16.09s on a formula simplification. DAG size of input: 118 DAG size of output: 38 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 13:34:06,780 INFO L354 Elim1Store]: treesize reduction 1178, result has 7.5 percent of original size [2021-11-19 13:34:06,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 183 treesize of output 226 [2021-11-19 13:34:16,123 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-19 13:34:16,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 241 treesize of output 118 [2021-11-19 13:34:16,145 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-19 13:34:16,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 94 treesize of output 46 [2021-11-19 13:34:28,339 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 14 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:28,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:36,911 WARN L227 SmtUtils]: Spent 7.86s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-19 13:37:21,757 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr234_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_103| (_ BitVec 32))) (not (let ((.cse0 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_108|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_109|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_107|) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32)))))) (and (forall ((v_subst_2 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr234| (_ BitVec 32))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr234|) .cse3) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse3))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse2) (bvadd (_ bv20 32) .cse2)))) (forall ((v_subst_1 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr234| (_ BitVec 32))) (let ((.cse4 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr234|)) (.cse6 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse5 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse4 .cse5) .cse6 .cse5))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse4 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr234_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_103| (_ BitVec 32))) (not (let ((.cse8 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse10 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse11 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_108|)) (.cse12 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse13 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_109|)) (.cse14 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_107|)) (.cse15 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse8 .cse9) .cse10 .cse9) .cse11 .cse9) .cse12 .cse9) .cse13 .cse9) .cse14 .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse15) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse8 (_ bv0 32)) .cse10 (_ bv0 32)) .cse11 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse15)))))))) is different from false [2021-11-19 13:38:41,561 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (and (forall ((v_subst_6 (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr234| (_ BitVec 32))) (let ((.cse0 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr234|)) (.cse2 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse3 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3)) (.cse4 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse5 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse5) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse5))))) (forall ((v_subst_5 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr234| (_ BitVec 32))) (let ((.cse6 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse7 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr234|) .cse7) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse7) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4) .cse7) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse7))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse6) (bvadd .cse6 (_ bv20 32)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr234_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_103| (_ BitVec 32))) (not (let ((.cse8 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_108|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_109|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_107|) .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse8) (bvadd .cse8 (_ bv20 32)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr234_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_103| (_ BitVec 32))) (not (let ((.cse10 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse12 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse13 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_108|)) (.cse14 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse15 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_109|)) (.cse16 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_107|)) (.cse17 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse10 .cse11) .cse12 .cse11) .cse13 .cse11) .cse14 .cse11) .cse15 .cse11) .cse16 .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse17) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse10 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)) .cse16 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse17)))))))) is different from true [2021-11-19 13:40:23,977 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr234_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_103| (_ BitVec 32))) (not (let ((.cse0 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_108|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_109|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_107|) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32)))))) (and (forall ((v_subst_6 (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (v_subst_10 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr234| (_ BitVec 32)) (v_subst_8 (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32))) (let ((.cse2 (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr234|)) (.cse4 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_10)) (.cse5 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_8)) (.cse6 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse7 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_3)) (.cse8 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse9 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse2 .cse3) .cse4 .cse3) .cse5 .cse3) .cse6 .cse3) .cse7 .cse3) .cse8 .cse3))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse9) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse2 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse9))))) (forall ((v_subst_5 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr234| (_ BitVec 32)) (v_subst_9 (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse10 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr234|) .cse11) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_9) .cse11) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_7) .cse11) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse11) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_4) .cse11) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse10) (bvadd (_ bv20 32) .cse10))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr234_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_103| (_ BitVec 32))) (not (let ((.cse12 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse14 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse15 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_108|)) (.cse16 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse17 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_109|)) (.cse18 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_107|)) (.cse19 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse13 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse12 .cse13) .cse14 .cse13) .cse15 .cse13) .cse16 .cse13) .cse17 .cse13) .cse18 .cse13))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse19) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse12 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)) .cse16 (_ bv0 32)) .cse17 (_ bv0 32)) .cse18 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse19)))))))) is different from false [2021-11-19 13:40:25,992 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr234_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_103| (_ BitVec 32))) (not (let ((.cse0 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_108|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr234_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_109|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_107|) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32)))))) (and (forall ((v_subst_6 (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (v_subst_10 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr234| (_ BitVec 32)) (v_subst_8 (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32))) (let ((.cse2 (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr234|)) (.cse4 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_10)) (.cse5 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_8)) (.cse6 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse7 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_3)) (.cse8 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse9 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse2 .cse3) .cse4 .cse3) .cse5 .cse3) .cse6 .cse3) .cse7 .cse3) .cse8 .cse3))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse9) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse2 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse9))))) (forall ((v_subst_5 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr234| (_ BitVec 32)) (v_subst_9 (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse10 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr234|) .cse11) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_9) .cse11) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_7) .cse11) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse11) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_4) .cse11) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse10) (bvadd (_ bv20 32) .cse10))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr234_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr234_103| (_ BitVec 32))) (not (let ((.cse12 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse14 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse15 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_108|)) (.cse16 (bvadd |v_#Ultimate.C_memset_#t~loopctr234_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse17 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_109|)) (.cse18 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr234_107|)) (.cse19 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse13 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse12 .cse13) .cse14 .cse13) .cse15 .cse13) .cse16 .cse13) .cse17 .cse13) .cse18 .cse13))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse19) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse12 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)) .cse16 (_ bv0 32)) .cse17 (_ bv0 32)) .cse18 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse19)))))))) is different from true [2021-11-19 13:41:28,551 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-19 13:41:28,551 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-19 13:41:28,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10] total 18 [2021-11-19 13:41:28,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025446326] [2021-11-19 13:41:28,552 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-19 13:41:28,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 13:41:28,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:41:28,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 13:41:28,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1150, Unknown=178, NotChecked=228, Total=1722 [2021-11-19 13:41:28,555 INFO L87 Difference]: Start difference. First operand 1148 states and 1407 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) [2021-11-19 13:43:18,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:18,255 INFO L93 Difference]: Finished difference Result 1174 states and 1443 transitions. [2021-11-19 13:43:18,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-19 13:43:18,256 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 [2021-11-19 13:43:18,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:18,265 INFO L225 Difference]: With dead ends: 1174 [2021-11-19 13:43:18,266 INFO L226 Difference]: Without dead ends: 1170 [2021-11-19 13:43:18,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 583.9s TimeCoverageRelationStatistics Valid=507, Invalid=2603, Unknown=208, NotChecked=342, Total=3660 [2021-11-19 13:43:18,269 INFO L933 BasicCegarLoop]: 925 mSDtfsCounter, 79 mSDsluCounter, 6452 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 7377 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:18,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 7377 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-19 13:43:18,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2021-11-19 13:43:18,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1160. [2021-11-19 13:43:18,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1160 states, 780 states have (on average 1.8025641025641026) internal successors, (1406), 1153 states have internal predecessors, (1406), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-19 13:43:18,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1423 transitions. [2021-11-19 13:43:18,305 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1423 transitions. Word has length 79 [2021-11-19 13:43:18,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:18,305 INFO L470 AbstractCegarLoop]: Abstraction has 1160 states and 1423 transitions. [2021-11-19 13:43:18,306 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) [2021-11-19 13:43:18,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1423 transitions. [2021-11-19 13:43:18,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-19 13:43:18,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:18,308 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] [2021-11-19 13:43:18,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-11-19 13:43:18,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-11-19 13:43:18,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-19 13:43:18,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:43:18,914 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 13:43:18,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:18,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1034394641, now seen corresponding path program 3 times [2021-11-19 13:43:18,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:43:18,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623625942] [2021-11-19 13:43:18,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:43:18,915 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:43:18,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:43:18,916 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:43:18,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-19 13:43:19,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-19 13:43:19,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:43:19,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 13:43:19,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:43:24,605 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:24,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:43:36,075 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:36,076 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:43:36,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623625942] [2021-11-19 13:43:36,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623625942] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:43:36,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1827909038] [2021-11-19 13:43:36,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:43:36,077 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:43:36,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:43:36,077 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:43:36,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-19 13:43:38,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-19 13:43:38,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:43:38,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 13:43:38,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:43:39,166 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:39,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:43:41,357 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:41,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1827909038] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:43:41,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231562953] [2021-11-19 13:43:41,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:43:41,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:43:41,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:43:41,359 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:43:41,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c539367-a5c5-4716-9a12-b00a6f4ce85c/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process