./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V --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 b6c6a722152c52daf4f5e799c877f12032a99023b4a9ea1a935c1ce634969e85 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:55:29,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:55:29,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:55:29,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:55:29,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:55:29,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:55:29,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:55:29,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:55:29,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:55:29,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:55:29,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:55:29,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:55:29,132 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:55:29,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:55:29,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:55:29,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:55:29,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:55:29,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:55:29,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:55:29,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:55:29,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:55:29,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:55:29,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:55:29,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:55:29,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:55:29,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:55:29,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:55:29,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:55:29,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:55:29,164 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:55:29,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:55:29,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:55:29,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:55:29,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:55:29,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:55:29,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:55:29,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:55:29,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:55:29,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:55:29,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:55:29,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:55:29,178 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-23 02:55:29,230 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:55:29,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:55:29,231 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:55:29,231 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:55:29,236 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:55:29,236 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:55:29,237 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:55:29,237 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:55:29,237 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:55:29,237 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:55:29,237 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:55:29,237 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:55:29,238 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:55:29,238 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:55:29,238 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:55:29,238 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:55:29,238 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:55:29,239 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:55:29,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 02:55:29,239 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 02:55:29,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:55:29,240 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:55:29,240 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 02:55:29,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:55:29,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:55:29,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:55:29,240 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 02:55:29,241 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 02:55:29,241 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 02:55:29,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:55:29,241 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 02:55:29,242 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:55:29,242 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:55:29,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:55:29,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:55:29,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:55:29,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:55:29,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:55:29,243 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:55:29,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:55:29,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:55:29,244 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:55:29,244 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_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6c6a722152c52daf4f5e799c877f12032a99023b4a9ea1a935c1ce634969e85 [2021-11-23 02:55:29,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:55:29,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:55:29,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:55:29,614 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:55:29,615 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:55:29,616 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i [2021-11-23 02:55:29,687 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/data/0e6dd552d/e7484c978a074ee392a92a8ca95ab8dd/FLAGe4219c769 [2021-11-23 02:55:30,460 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:55:30,461 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i [2021-11-23 02:55:30,478 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/data/0e6dd552d/e7484c978a074ee392a92a8ca95ab8dd/FLAGe4219c769 [2021-11-23 02:55:30,638 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/data/0e6dd552d/e7484c978a074ee392a92a8ca95ab8dd [2021-11-23 02:55:30,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:55:30,643 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:55:30,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:55:30,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:55:30,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:55:30,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:55:30" (1/1) ... [2021-11-23 02:55:30,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20fb50ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:30, skipping insertion in model container [2021-11-23 02:55:30,655 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:55:30" (1/1) ... [2021-11-23 02:55:30,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:55:30,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:55:31,263 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_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i[33021,33034] [2021-11-23 02:55:31,451 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_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i[45234,45247] [2021-11-23 02:55:31,459 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:55:31,480 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) [2021-11-23 02:55:31,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@8c10815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:31, skipping insertion in model container [2021-11-23 02:55:31,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:55:31,485 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-23 02:55:31,488 INFO L158 Benchmark]: Toolchain (without parser) took 842.83ms. Allocated memory was 92.3MB in the beginning and 127.9MB in the end (delta: 35.7MB). Free memory was 53.5MB in the beginning and 93.5MB in the end (delta: -40.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 02:55:31,490 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 92.3MB. Free memory is still 72.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:55:31,492 INFO L158 Benchmark]: CACSL2BoogieTranslator took 838.42ms. Allocated memory was 92.3MB in the beginning and 127.9MB in the end (delta: 35.7MB). Free memory was 53.2MB in the beginning and 93.5MB in the end (delta: -40.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 02:55:31,494 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 92.3MB. Free memory is still 72.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 838.42ms. Allocated memory was 92.3MB in the beginning and 127.9MB in the end (delta: 35.7MB). Free memory was 53.2MB in the beginning and 93.5MB in the end (delta: -40.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 766]: 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_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V --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 b6c6a722152c52daf4f5e799c877f12032a99023b4a9ea1a935c1ce634969e85 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:55:33,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:55:33,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:55:33,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:55:33,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:55:33,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:55:33,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:55:33,861 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:55:33,863 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:55:33,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:55:33,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:55:33,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:55:33,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:55:33,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:55:33,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:55:33,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:55:33,876 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:55:33,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:55:33,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:55:33,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:55:33,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:55:33,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:55:33,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:55:33,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:55:33,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:55:33,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:55:33,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:55:33,902 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:55:33,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:55:33,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:55:33,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:55:33,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:55:33,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:55:33,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:55:33,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:55:33,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:55:33,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:55:33,936 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:55:33,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:55:33,938 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:55:33,939 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:55:33,940 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-23 02:55:33,993 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:55:33,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:55:33,994 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:55:33,995 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:55:33,996 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:55:33,996 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:55:33,996 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:55:33,997 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:55:33,997 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:55:33,997 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:55:33,998 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:55:33,999 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:55:34,000 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 02:55:34,001 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 02:55:34,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:55:34,001 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:55:34,002 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 02:55:34,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:55:34,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:55:34,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:55:34,003 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 02:55:34,003 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 02:55:34,003 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 02:55:34,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:55:34,004 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 02:55:34,004 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 02:55:34,004 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 02:55:34,004 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:55:34,005 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:55:34,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:55:34,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 02:55:34,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:55:34,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:55:34,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:55:34,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:55:34,007 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 02:55:34,007 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 02:55:34,008 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:55:34,008 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:55:34,008 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_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6c6a722152c52daf4f5e799c877f12032a99023b4a9ea1a935c1ce634969e85 [2021-11-23 02:55:34,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:55:34,493 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:55:34,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:55:34,499 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:55:34,500 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:55:34,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i [2021-11-23 02:55:34,586 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/data/c21924390/b87b2245de4241e7a4bbd827e24510c8/FLAG69bda7668 [2021-11-23 02:55:35,346 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:55:35,347 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i [2021-11-23 02:55:35,375 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/data/c21924390/b87b2245de4241e7a4bbd827e24510c8/FLAG69bda7668 [2021-11-23 02:55:35,561 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/data/c21924390/b87b2245de4241e7a4bbd827e24510c8 [2021-11-23 02:55:35,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:55:35,567 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:55:35,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:55:35,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:55:35,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:55:35,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:55:35" (1/1) ... [2021-11-23 02:55:35,576 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@613ee24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:35, skipping insertion in model container [2021-11-23 02:55:35,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:55:35" (1/1) ... [2021-11-23 02:55:35,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:55:35,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:55:36,109 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_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i[33021,33034] [2021-11-23 02:55:36,278 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_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i[45234,45247] [2021-11-23 02:55:36,301 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:55:36,315 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 02:55:36,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:55:36,357 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_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i[33021,33034] [2021-11-23 02:55:36,457 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_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i[45234,45247] [2021-11-23 02:55:36,460 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:55:36,465 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:55:36,548 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_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i[33021,33034] [2021-11-23 02:55:36,659 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_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i[45234,45247] [2021-11-23 02:55:36,662 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:55:36,734 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:55:36,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:36 WrapperNode [2021-11-23 02:55:36,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:55:36,738 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:55:36,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:55:36,739 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:55:36,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:36" (1/1) ... [2021-11-23 02:55:36,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:36" (1/1) ... [2021-11-23 02:55:36,889 INFO L137 Inliner]: procedures = 180, calls = 297, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1011 [2021-11-23 02:55:36,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:55:36,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:55:36,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:55:36,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:55:36,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:36" (1/1) ... [2021-11-23 02:55:36,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:36" (1/1) ... [2021-11-23 02:55:36,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:36" (1/1) ... [2021-11-23 02:55:36,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:36" (1/1) ... [2021-11-23 02:55:36,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:36" (1/1) ... [2021-11-23 02:55:37,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:36" (1/1) ... [2021-11-23 02:55:37,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:36" (1/1) ... [2021-11-23 02:55:37,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:55:37,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:55:37,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:55:37,043 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:55:37,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:36" (1/1) ... [2021-11-23 02:55:37,052 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:55:37,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:55:37,094 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:55:37,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:55:37,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-23 02:55:37,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 02:55:37,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 02:55:37,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 02:55:37,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 02:55:37,150 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 02:55:37,150 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2021-11-23 02:55:37,151 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2021-11-23 02:55:37,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:55:37,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:55:37,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:55:37,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:55:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 02:55:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:55:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:55:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 02:55:37,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 02:55:37,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:55:37,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:55:37,447 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:55:37,450 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:55:37,464 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 02:55:42,787 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:55:42,804 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:55:42,804 INFO L301 CfgBuilder]: Removed 62 assume(true) statements. [2021-11-23 02:55:42,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:55:42 BoogieIcfgContainer [2021-11-23 02:55:42,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:55:42,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:55:42,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:55:42,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:55:42,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:55:35" (1/3) ... [2021-11-23 02:55:42,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38935d70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:55:42, skipping insertion in model container [2021-11-23 02:55:42,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:55:36" (2/3) ... [2021-11-23 02:55:42,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38935d70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:55:42, skipping insertion in model container [2021-11-23 02:55:42,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:55:42" (3/3) ... [2021-11-23 02:55:42,828 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test8-1.i [2021-11-23 02:55:42,834 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:55:42,835 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 536 error locations. [2021-11-23 02:55:42,884 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:55:42,891 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 [2021-11-23 02:55:42,892 INFO L340 AbstractCegarLoop]: Starting to check reachability of 536 error locations. [2021-11-23 02:55:42,936 INFO L276 IsEmpty]: Start isEmpty. Operand has 1097 states, 540 states have (on average 2.240740740740741) internal successors, (1210), 1088 states have internal predecessors, (1210), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-23 02:55:42,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 02:55:42,943 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:55:42,944 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 02:55:42,945 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 02:55:42,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:55:42,951 INFO L85 PathProgramCache]: Analyzing trace with hash 132136, now seen corresponding path program 1 times [2021-11-23 02:55:42,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:55:42,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [275627036] [2021-11-23 02:55:42,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:55:42,963 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:55:42,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:55:42,964 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:55:42,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 02:55:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:55:43,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:55:43,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:55:43,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:55:43,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:55:43,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:55:43,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:55:43,319 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:55:43,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [275627036] [2021-11-23 02:55:43,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [275627036] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:55:43,321 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:55:43,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 02:55:43,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030114494] [2021-11-23 02:55:43,324 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:55:43,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:55:43,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:55:43,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:55:43,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:55:43,384 INFO L87 Difference]: Start difference. First operand has 1097 states, 540 states have (on average 2.240740740740741) internal successors, (1210), 1088 states have internal predecessors, (1210), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) 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) [2021-11-23 02:55:45,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:55:45,727 INFO L93 Difference]: Finished difference Result 1100 states and 1186 transitions. [2021-11-23 02:55:45,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:55:45,729 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 [2021-11-23 02:55:45,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:55:45,752 INFO L225 Difference]: With dead ends: 1100 [2021-11-23 02:55:45,752 INFO L226 Difference]: Without dead ends: 1098 [2021-11-23 02:55:45,754 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 [2021-11-23 02:55:45,758 INFO L933 BasicCegarLoop]: 696 mSDtfsCounter, 971 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:55:45,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [975 Valid, 825 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-23 02:55:45,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2021-11-23 02:55:45,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1086. [2021-11-23 02:55:45,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 543 states have (on average 2.0902394106813995) internal successors, (1135), 1076 states have internal predecessors, (1135), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-23 02:55:45,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1177 transitions. [2021-11-23 02:55:45,870 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1177 transitions. Word has length 3 [2021-11-23 02:55:45,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:55:45,871 INFO L470 AbstractCegarLoop]: Abstraction has 1086 states and 1177 transitions. [2021-11-23 02:55:45,871 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) [2021-11-23 02:55:45,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1177 transitions. [2021-11-23 02:55:45,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 02:55:45,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:55:45,872 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 02:55:45,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-23 02:55:46,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:55:46,076 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 02:55:46,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:55:46,077 INFO L85 PathProgramCache]: Analyzing trace with hash 132137, now seen corresponding path program 1 times [2021-11-23 02:55:46,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:55:46,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1697315599] [2021-11-23 02:55:46,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:55:46,079 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:55:46,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:55:46,088 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:55:46,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 02:55:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:55:46,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:55:46,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:55:46,283 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 [2021-11-23 02:55:46,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:55:46,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:55:46,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:55:46,336 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:55:46,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1697315599] [2021-11-23 02:55:46,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1697315599] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:55:46,337 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:55:46,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-23 02:55:46,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648827683] [2021-11-23 02:55:46,337 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:55:46,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:55:46,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:55:46,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:55:46,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:55:46,340 INFO L87 Difference]: Start difference. First operand 1086 states and 1177 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) [2021-11-23 02:55:51,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:55:51,296 INFO L93 Difference]: Finished difference Result 1562 states and 1687 transitions. [2021-11-23 02:55:51,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:55:51,297 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 [2021-11-23 02:55:51,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:55:51,308 INFO L225 Difference]: With dead ends: 1562 [2021-11-23 02:55:51,308 INFO L226 Difference]: Without dead ends: 1562 [2021-11-23 02:55:51,309 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 [2021-11-23 02:55:51,311 INFO L933 BasicCegarLoop]: 832 mSDtfsCounter, 1136 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:55:51,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1139 Valid, 1749 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-11-23 02:55:51,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2021-11-23 02:55:51,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1125. [2021-11-23 02:55:51,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 590 states have (on average 2.0694915254237287) internal successors, (1221), 1114 states have internal predecessors, (1221), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-23 02:55:51,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1265 transitions. [2021-11-23 02:55:51,363 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1265 transitions. Word has length 3 [2021-11-23 02:55:51,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:55:51,364 INFO L470 AbstractCegarLoop]: Abstraction has 1125 states and 1265 transitions. [2021-11-23 02:55:51,364 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) [2021-11-23 02:55:51,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1265 transitions. [2021-11-23 02:55:51,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 02:55:51,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:55:51,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:55:51,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:55:51,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:55:51,579 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 02:55:51,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:55:51,580 INFO L85 PathProgramCache]: Analyzing trace with hash -846217710, now seen corresponding path program 1 times [2021-11-23 02:55:51,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:55:51,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597220991] [2021-11-23 02:55:51,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:55:51,584 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:55:51,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:55:51,585 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:55:51,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 02:55:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:55:51,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:55:51,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:55:51,750 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 [2021-11-23 02:55:51,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:55:51,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:55:51,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:55:51,803 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:55:51,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597220991] [2021-11-23 02:55:51,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1597220991] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:55:51,804 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:55:51,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 02:55:51,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712759380] [2021-11-23 02:55:51,806 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:55:51,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:55:51,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:55:51,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:55:51,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:55:51,812 INFO L87 Difference]: Start difference. First operand 1125 states and 1265 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) [2021-11-23 02:55:54,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:55:54,246 INFO L93 Difference]: Finished difference Result 1450 states and 1612 transitions. [2021-11-23 02:55:54,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:55:54,246 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 [2021-11-23 02:55:54,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:55:54,255 INFO L225 Difference]: With dead ends: 1450 [2021-11-23 02:55:54,255 INFO L226 Difference]: Without dead ends: 1450 [2021-11-23 02:55:54,255 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 [2021-11-23 02:55:54,257 INFO L933 BasicCegarLoop]: 995 mSDtfsCounter, 990 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:55:54,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [995 Valid, 1300 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-23 02:55:54,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2021-11-23 02:55:54,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1078. [2021-11-23 02:55:54,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 590 states have (on average 1.9813559322033898) internal successors, (1169), 1067 states have internal predecessors, (1169), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-23 02:55:54,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1213 transitions. [2021-11-23 02:55:54,292 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1213 transitions. Word has length 8 [2021-11-23 02:55:54,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:55:54,293 INFO L470 AbstractCegarLoop]: Abstraction has 1078 states and 1213 transitions. [2021-11-23 02:55:54,293 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) [2021-11-23 02:55:54,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1213 transitions. [2021-11-23 02:55:54,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 02:55:54,294 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:55:54,294 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:55:54,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:55:54,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:55:54,506 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 02:55:54,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:55:54,506 INFO L85 PathProgramCache]: Analyzing trace with hash -846217709, now seen corresponding path program 1 times [2021-11-23 02:55:54,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:55:54,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345906928] [2021-11-23 02:55:54,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:55:54,507 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:55:54,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:55:54,512 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:55:54,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 02:55:54,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:55:54,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:55:54,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:55:54,647 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 [2021-11-23 02:55:54,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:55:54,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:55:54,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:55:54,774 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:55:54,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345906928] [2021-11-23 02:55:54,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345906928] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:55:54,774 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:55:54,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-23 02:55:54,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244360888] [2021-11-23 02:55:54,775 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:55:54,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:55:54,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:55:54,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:55:54,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:55:54,776 INFO L87 Difference]: Start difference. First operand 1078 states and 1213 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) [2021-11-23 02:55:59,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:55:59,131 INFO L93 Difference]: Finished difference Result 1509 states and 1633 transitions. [2021-11-23 02:55:59,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:55:59,134 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 [2021-11-23 02:55:59,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:55:59,142 INFO L225 Difference]: With dead ends: 1509 [2021-11-23 02:55:59,143 INFO L226 Difference]: Without dead ends: 1509 [2021-11-23 02:55:59,143 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 [2021-11-23 02:55:59,144 INFO L933 BasicCegarLoop]: 1182 mSDtfsCounter, 1416 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1419 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:55:59,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1419 Valid, 1667 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-11-23 02:55:59,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2021-11-23 02:55:59,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1276. [2021-11-23 02:55:59,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 797 states have (on average 1.9786700125470515) internal successors, (1577), 1264 states have internal predecessors, (1577), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-23 02:55:59,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1623 transitions. [2021-11-23 02:55:59,186 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1623 transitions. Word has length 8 [2021-11-23 02:55:59,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:55:59,187 INFO L470 AbstractCegarLoop]: Abstraction has 1276 states and 1623 transitions. [2021-11-23 02:55:59,187 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) [2021-11-23 02:55:59,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1623 transitions. [2021-11-23 02:55:59,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 02:55:59,188 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:55:59,188 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:55:59,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:55:59,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:55:59,400 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr534ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 02:55:59,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:55:59,401 INFO L85 PathProgramCache]: Analyzing trace with hash -652228184, now seen corresponding path program 1 times [2021-11-23 02:55:59,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:55:59,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395562751] [2021-11-23 02:55:59,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:55:59,401 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:55:59,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:55:59,403 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:55:59,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 02:55:59,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:55:59,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:55:59,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:55:59,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:55:59,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:55:59,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:55:59,658 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-23 02:55:59,659 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 [2021-11-23 02:55:59,758 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-23 02:55:59,760 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 [2021-11-23 02:55:59,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:55:59,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:55:59,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:55:59,873 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:55:59,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [395562751] [2021-11-23 02:55:59,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [395562751] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:55:59,874 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:55:59,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 02:55:59,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456939483] [2021-11-23 02:55:59,874 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:55:59,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:55:59,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:55:59,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:55:59,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:55:59,875 INFO L87 Difference]: Start difference. First operand 1276 states and 1623 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:02,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:56:02,142 INFO L93 Difference]: Finished difference Result 1786 states and 2342 transitions. [2021-11-23 02:56:02,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:56:02,143 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-23 02:56:02,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:56:02,154 INFO L225 Difference]: With dead ends: 1786 [2021-11-23 02:56:02,154 INFO L226 Difference]: Without dead ends: 1786 [2021-11-23 02:56:02,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:56:02,155 INFO L933 BasicCegarLoop]: 1048 mSDtfsCounter, 356 mSDsluCounter, 2922 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 3970 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:56:02,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 3970 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-23 02:56:02,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2021-11-23 02:56:02,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1276. [2021-11-23 02:56:02,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 797 states have (on average 1.9774153074027603) internal successors, (1576), 1264 states have internal predecessors, (1576), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-23 02:56:02,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1622 transitions. [2021-11-23 02:56:02,197 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1622 transitions. Word has length 10 [2021-11-23 02:56:02,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:56:02,198 INFO L470 AbstractCegarLoop]: Abstraction has 1276 states and 1622 transitions. [2021-11-23 02:56:02,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:02,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1622 transitions. [2021-11-23 02:56:02,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 02:56:02,199 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:56:02,199 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:56:02,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 02:56:02,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:56:02,412 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 02:56:02,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:56:02,414 INFO L85 PathProgramCache]: Analyzing trace with hash -413650658, now seen corresponding path program 1 times [2021-11-23 02:56:02,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:56:02,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870455111] [2021-11-23 02:56:02,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:02,414 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:56:02,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:56:02,415 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:56:02,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 02:56:02,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:02,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:56:02,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:56:02,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:02,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:56:02,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:02,627 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:56:02,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1870455111] [2021-11-23 02:56:02,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1870455111] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:56:02,627 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:56:02,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-23 02:56:02,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138380917] [2021-11-23 02:56:02,627 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:56:02,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:56:02,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:56:02,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:56:02,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:56:02,629 INFO L87 Difference]: Start difference. First operand 1276 states and 1622 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:02,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:56:02,659 INFO L93 Difference]: Finished difference Result 1243 states and 1588 transitions. [2021-11-23 02:56:02,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:56:02,660 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 [2021-11-23 02:56:02,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:56:02,667 INFO L225 Difference]: With dead ends: 1243 [2021-11-23 02:56:02,667 INFO L226 Difference]: Without dead ends: 1243 [2021-11-23 02:56:02,668 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 [2021-11-23 02:56:02,669 INFO L933 BasicCegarLoop]: 1054 mSDtfsCounter, 966 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 1238 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 [2021-11-23 02:56:02,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [971 Valid, 1238 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:56:02,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2021-11-23 02:56:02,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1234. [2021-11-23 02:56:02,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 779 states have (on average 1.9679075738125802) internal successors, (1533), 1222 states have internal predecessors, (1533), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-23 02:56:02,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1579 transitions. [2021-11-23 02:56:02,703 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1579 transitions. Word has length 18 [2021-11-23 02:56:02,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:56:02,703 INFO L470 AbstractCegarLoop]: Abstraction has 1234 states and 1579 transitions. [2021-11-23 02:56:02,704 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) [2021-11-23 02:56:02,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1579 transitions. [2021-11-23 02:56:02,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 02:56:02,705 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:56:02,705 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] [2021-11-23 02:56:02,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 02:56:02,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:56:02,917 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 02:56:02,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:56:02,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1913675577, now seen corresponding path program 1 times [2021-11-23 02:56:02,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:56:02,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [334692724] [2021-11-23 02:56:02,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:02,919 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:56:02,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:56:02,921 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:56:02,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 02:56:03,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:03,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:56:03,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:56:03,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:03,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:56:03,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:03,171 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:56:03,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [334692724] [2021-11-23 02:56:03,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [334692724] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:56:03,172 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:56:03,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-23 02:56:03,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384071053] [2021-11-23 02:56:03,172 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:56:03,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:56:03,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:56:03,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:56:03,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:56:03,174 INFO L87 Difference]: Start difference. First operand 1234 states and 1579 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) [2021-11-23 02:56:03,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:56:03,277 INFO L93 Difference]: Finished difference Result 1222 states and 1560 transitions. [2021-11-23 02:56:03,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:56:03,278 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 [2021-11-23 02:56:03,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:56:03,285 INFO L225 Difference]: With dead ends: 1222 [2021-11-23 02:56:03,285 INFO L226 Difference]: Without dead ends: 1222 [2021-11-23 02:56:03,286 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 [2021-11-23 02:56:03,287 INFO L933 BasicCegarLoop]: 1009 mSDtfsCounter, 1864 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1869 SdHoareTripleChecker+Valid, 2103 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:56:03,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1869 Valid, 2103 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:56:03,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2021-11-23 02:56:03,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1212. [2021-11-23 02:56:03,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 771 states have (on average 1.9507133592736705) internal successors, (1504), 1200 states have internal predecessors, (1504), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-23 02:56:03,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1550 transitions. [2021-11-23 02:56:03,319 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1550 transitions. Word has length 20 [2021-11-23 02:56:03,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:56:03,319 INFO L470 AbstractCegarLoop]: Abstraction has 1212 states and 1550 transitions. [2021-11-23 02:56:03,320 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) [2021-11-23 02:56:03,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1550 transitions. [2021-11-23 02:56:03,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 02:56:03,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:56:03,321 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] [2021-11-23 02:56:03,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 02:56:03,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:56:03,545 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 02:56:03,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:56:03,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1224753126, now seen corresponding path program 1 times [2021-11-23 02:56:03,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:56:03,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [254383419] [2021-11-23 02:56:03,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:03,548 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:56:03,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:56:03,549 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:56:03,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 02:56:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:03,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:56:03,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:56:03,762 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 [2021-11-23 02:56:03,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:03,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:56:04,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:04,017 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:56:04,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [254383419] [2021-11-23 02:56:04,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [254383419] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:56:04,017 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:56:04,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 02:56:04,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649421919] [2021-11-23 02:56:04,018 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:56:04,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:56:04,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:56:04,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:56:04,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:56:04,019 INFO L87 Difference]: Start difference. First operand 1212 states and 1550 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) [2021-11-23 02:56:06,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:56:06,117 INFO L93 Difference]: Finished difference Result 1802 states and 2373 transitions. [2021-11-23 02:56:06,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:56:06,117 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 [2021-11-23 02:56:06,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:56:06,125 INFO L225 Difference]: With dead ends: 1802 [2021-11-23 02:56:06,126 INFO L226 Difference]: Without dead ends: 1802 [2021-11-23 02:56:06,126 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 [2021-11-23 02:56:06,127 INFO L933 BasicCegarLoop]: 563 mSDtfsCounter, 2108 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2110 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:56:06,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2110 Valid, 999 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-23 02:56:06,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2021-11-23 02:56:06,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1208. [2021-11-23 02:56:06,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 771 states have (on average 1.9455252918287937) internal successors, (1500), 1196 states have internal predecessors, (1500), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-23 02:56:06,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1546 transitions. [2021-11-23 02:56:06,163 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1546 transitions. Word has length 34 [2021-11-23 02:56:06,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:56:06,163 INFO L470 AbstractCegarLoop]: Abstraction has 1208 states and 1546 transitions. [2021-11-23 02:56:06,163 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) [2021-11-23 02:56:06,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1546 transitions. [2021-11-23 02:56:06,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 02:56:06,165 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:56:06,165 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] [2021-11-23 02:56:06,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-23 02:56:06,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:56:06,377 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 02:56:06,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:56:06,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1224753127, now seen corresponding path program 1 times [2021-11-23 02:56:06,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:56:06,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833674111] [2021-11-23 02:56:06,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:06,378 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:56:06,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:56:06,380 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:56:06,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-23 02:56:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:06,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:56:06,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:56:06,544 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 [2021-11-23 02:56:06,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:06,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:56:07,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:07,286 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:56:07,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1833674111] [2021-11-23 02:56:07,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1833674111] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:56:07,286 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:56:07,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 02:56:07,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140333768] [2021-11-23 02:56:07,287 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:56:07,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:56:07,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:56:07,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:56:07,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:56:07,288 INFO L87 Difference]: Start difference. First operand 1208 states and 1546 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) [2021-11-23 02:56:15,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:56:15,644 INFO L93 Difference]: Finished difference Result 1449 states and 1564 transitions. [2021-11-23 02:56:15,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:56:15,646 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 [2021-11-23 02:56:15,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:56:15,651 INFO L225 Difference]: With dead ends: 1449 [2021-11-23 02:56:15,651 INFO L226 Difference]: Without dead ends: 1449 [2021-11-23 02:56:15,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:56:15,652 INFO L933 BasicCegarLoop]: 721 mSDtfsCounter, 1263 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 1974 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1263 SdHoareTripleChecker+Valid, 2645 SdHoareTripleChecker+Invalid, 1988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:56:15,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1263 Valid, 2645 Invalid, 1988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1974 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2021-11-23 02:56:15,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2021-11-23 02:56:15,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 1204. [2021-11-23 02:56:15,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1204 states, 771 states have (on average 1.940337224383917) internal successors, (1496), 1192 states have internal predecessors, (1496), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-23 02:56:15,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1542 transitions. [2021-11-23 02:56:15,682 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1542 transitions. Word has length 34 [2021-11-23 02:56:15,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:56:15,683 INFO L470 AbstractCegarLoop]: Abstraction has 1204 states and 1542 transitions. [2021-11-23 02:56:15,683 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) [2021-11-23 02:56:15,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1542 transitions. [2021-11-23 02:56:15,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-23 02:56:15,685 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:56:15,685 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] [2021-11-23 02:56:15,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-23 02:56:15,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:56:15,897 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 02:56:15,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:56:15,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1045534242, now seen corresponding path program 1 times [2021-11-23 02:56:15,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:56:15,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463182987] [2021-11-23 02:56:15,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:15,899 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:56:15,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:56:15,900 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:56:15,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-23 02:56:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:16,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:56:16,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:56:16,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:16,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:56:16,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:16,385 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:56:16,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [463182987] [2021-11-23 02:56:16,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [463182987] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:56:16,385 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:56:16,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 02:56:16,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067635577] [2021-11-23 02:56:16,386 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:56:16,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:56:16,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:56:16,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:56:16,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:56:16,387 INFO L87 Difference]: Start difference. First operand 1204 states and 1542 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:16,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:56:16,459 INFO L93 Difference]: Finished difference Result 1207 states and 1541 transitions. [2021-11-23 02:56:16,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:56:16,460 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2021-11-23 02:56:16,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:56:16,467 INFO L225 Difference]: With dead ends: 1207 [2021-11-23 02:56:16,467 INFO L226 Difference]: Without dead ends: 1207 [2021-11-23 02:56:16,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:56:16,468 INFO L933 BasicCegarLoop]: 1003 mSDtfsCounter, 913 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 2081 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 [2021-11-23 02:56:16,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [918 Valid, 2081 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:56:16,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2021-11-23 02:56:16,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1198. [2021-11-23 02:56:16,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1198 states, 765 states have (on average 1.942483660130719) internal successors, (1486), 1186 states have internal predecessors, (1486), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-23 02:56:16,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1532 transitions. [2021-11-23 02:56:16,497 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1532 transitions. Word has length 49 [2021-11-23 02:56:16,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:56:16,497 INFO L470 AbstractCegarLoop]: Abstraction has 1198 states and 1532 transitions. [2021-11-23 02:56:16,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:16,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1532 transitions. [2021-11-23 02:56:16,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-23 02:56:16,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:56:16,500 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] [2021-11-23 02:56:16,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-23 02:56:16,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:56:16,716 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 02:56:16,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:56:16,716 INFO L85 PathProgramCache]: Analyzing trace with hash -551406574, now seen corresponding path program 1 times [2021-11-23 02:56:16,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:56:16,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [120248786] [2021-11-23 02:56:16,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:16,717 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:56:16,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:56:16,718 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:56:16,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 02:56:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:16,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:56:16,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:56:17,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:17,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:56:17,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:17,706 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:56:17,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [120248786] [2021-11-23 02:56:17,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [120248786] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:56:17,706 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:56:17,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 02:56:17,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68263175] [2021-11-23 02:56:17,707 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:56:17,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:56:17,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:56:17,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:56:17,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:56:17,710 INFO L87 Difference]: Start difference. First operand 1198 states and 1532 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:18,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:56:18,001 INFO L93 Difference]: Finished difference Result 1738 states and 2267 transitions. [2021-11-23 02:56:18,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:56:18,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-23 02:56:18,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:56:18,011 INFO L225 Difference]: With dead ends: 1738 [2021-11-23 02:56:18,012 INFO L226 Difference]: Without dead ends: 1738 [2021-11-23 02:56:18,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:56:18,013 INFO L933 BasicCegarLoop]: 1212 mSDtfsCounter, 407 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 2072 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:56:18,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 2072 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 02:56:18,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2021-11-23 02:56:18,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1559. [2021-11-23 02:56:18,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 1124 states have (on average 1.9252669039145907) internal successors, (2164), 1545 states have internal predecessors, (2164), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-23 02:56:18,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 2214 transitions. [2021-11-23 02:56:18,052 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 2214 transitions. Word has length 57 [2021-11-23 02:56:18,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:56:18,053 INFO L470 AbstractCegarLoop]: Abstraction has 1559 states and 2214 transitions. [2021-11-23 02:56:18,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:56:18,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 2214 transitions. [2021-11-23 02:56:18,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-23 02:56:18,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:56:18,055 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] [2021-11-23 02:56:18,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-23 02:56:18,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:56:18,268 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 02:56:18,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:56:18,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1189287633, now seen corresponding path program 1 times [2021-11-23 02:56:18,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:56:18,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1364136901] [2021-11-23 02:56:18,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:18,269 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:56:18,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:56:18,271 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:56:18,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-23 02:56:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:18,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 02:56:18,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:56:18,593 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 [2021-11-23 02:56:18,601 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 [2021-11-23 02:56:19,307 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 02:56:19,308 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 25 treesize of output 27 [2021-11-23 02:56:19,326 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:56:19,327 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 24 treesize of output 20 [2021-11-23 02:56:19,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:19,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:56:24,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:24,938 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:56:24,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1364136901] [2021-11-23 02:56:24,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1364136901] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:56:24,938 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:56:24,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 02:56:24,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598320511] [2021-11-23 02:56:24,939 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:56:24,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:56:24,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:56:24,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:56:24,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-23 02:56:24,941 INFO L87 Difference]: Start difference. First operand 1559 states and 2214 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) [2021-11-23 02:56:30,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:56:30,682 INFO L93 Difference]: Finished difference Result 2164 states and 2912 transitions. [2021-11-23 02:56:30,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:56:30,686 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 [2021-11-23 02:56:30,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:56:30,698 INFO L225 Difference]: With dead ends: 2164 [2021-11-23 02:56:30,698 INFO L226 Difference]: Without dead ends: 2164 [2021-11-23 02:56:30,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-23 02:56:30,700 INFO L933 BasicCegarLoop]: 754 mSDtfsCounter, 1500 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 1484 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 2152 SdHoareTripleChecker+Invalid, 3013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1486 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:56:30,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1507 Valid, 2152 Invalid, 3013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1484 Invalid, 0 Unknown, 1486 Unchecked, 5.6s Time] [2021-11-23 02:56:30,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2164 states. [2021-11-23 02:56:30,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2164 to 1171. [2021-11-23 02:56:30,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 772 states have (on average 1.8264248704663213) internal successors, (1410), 1159 states have internal predecessors, (1410), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-23 02:56:30,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1456 transitions. [2021-11-23 02:56:30,739 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1456 transitions. Word has length 60 [2021-11-23 02:56:30,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:56:30,739 INFO L470 AbstractCegarLoop]: Abstraction has 1171 states and 1456 transitions. [2021-11-23 02:56:30,740 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) [2021-11-23 02:56:30,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1456 transitions. [2021-11-23 02:56:30,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-23 02:56:30,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:56:30,741 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:56:30,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-23 02:56:30,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:56:30,958 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 02:56:30,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:56:30,959 INFO L85 PathProgramCache]: Analyzing trace with hash 444125234, now seen corresponding path program 1 times [2021-11-23 02:56:30,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:56:30,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1031608243] [2021-11-23 02:56:30,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:30,959 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:56:30,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:56:30,960 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:56:30,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-23 02:56:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:31,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:56:31,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:56:31,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:31,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:56:31,523 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 [2021-11-23 02:56:31,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:31,800 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:56:31,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1031608243] [2021-11-23 02:56:31,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1031608243] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:56:31,801 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:56:31,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 02:56:31,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409537241] [2021-11-23 02:56:31,801 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:56:31,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:56:31,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:56:31,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:56:31,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:56:31,803 INFO L87 Difference]: Start difference. First operand 1171 states and 1456 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) [2021-11-23 02:56:33,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:56:33,654 INFO L93 Difference]: Finished difference Result 1169 states and 1454 transitions. [2021-11-23 02:56:33,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:56:33,656 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 [2021-11-23 02:56:33,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:56:33,661 INFO L225 Difference]: With dead ends: 1169 [2021-11-23 02:56:33,661 INFO L226 Difference]: Without dead ends: 1169 [2021-11-23 02:56:33,661 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 [2021-11-23 02:56:33,662 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 1754 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1759 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:56:33,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1759 Valid, 710 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-23 02:56:33,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2021-11-23 02:56:33,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1169. [2021-11-23 02:56:33,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1169 states, 772 states have (on average 1.8238341968911918) internal successors, (1408), 1157 states have internal predecessors, (1408), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-23 02:56:33,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1454 transitions. [2021-11-23 02:56:33,686 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1454 transitions. Word has length 62 [2021-11-23 02:56:33,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:56:33,686 INFO L470 AbstractCegarLoop]: Abstraction has 1169 states and 1454 transitions. [2021-11-23 02:56:33,686 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) [2021-11-23 02:56:33,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1454 transitions. [2021-11-23 02:56:33,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-23 02:56:33,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:56:33,688 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] [2021-11-23 02:56:33,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-23 02:56:33,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:56:33,901 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 02:56:33,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:56:33,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1859054235, now seen corresponding path program 1 times [2021-11-23 02:56:33,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:56:33,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204016380] [2021-11-23 02:56:33,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:33,902 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:56:33,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:56:33,903 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:56:33,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-23 02:56:34,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:34,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 02:56:34,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:56:34,268 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 [2021-11-23 02:56:34,287 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 [2021-11-23 02:56:34,335 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 [2021-11-23 02:56:34,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:34,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:56:34,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:34,480 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:56:34,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [204016380] [2021-11-23 02:56:34,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [204016380] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:56:34,481 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:56:34,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 02:56:34,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217519300] [2021-11-23 02:56:34,481 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:56:34,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:56:34,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:56:34,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:56:34,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:56:34,482 INFO L87 Difference]: Start difference. First operand 1169 states and 1454 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) [2021-11-23 02:56:37,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:56:37,507 INFO L93 Difference]: Finished difference Result 1168 states and 1453 transitions. [2021-11-23 02:56:37,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:56:37,507 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 [2021-11-23 02:56:37,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:56:37,512 INFO L225 Difference]: With dead ends: 1168 [2021-11-23 02:56:37,512 INFO L226 Difference]: Without dead ends: 1168 [2021-11-23 02:56:37,512 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 [2021-11-23 02:56:37,513 INFO L933 BasicCegarLoop]: 965 mSDtfsCounter, 4 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:56:37,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2552 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-23 02:56:37,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2021-11-23 02:56:37,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1168. [2021-11-23 02:56:37,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 772 states have (on average 1.822538860103627) internal successors, (1407), 1156 states have internal predecessors, (1407), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-23 02:56:37,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1453 transitions. [2021-11-23 02:56:37,554 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1453 transitions. Word has length 65 [2021-11-23 02:56:37,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:56:37,555 INFO L470 AbstractCegarLoop]: Abstraction has 1168 states and 1453 transitions. [2021-11-23 02:56:37,556 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) [2021-11-23 02:56:37,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1453 transitions. [2021-11-23 02:56:37,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-23 02:56:37,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:56:37,558 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] [2021-11-23 02:56:37,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-23 02:56:37,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:56:37,771 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 02:56:37,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:56:37,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1859054234, now seen corresponding path program 1 times [2021-11-23 02:56:37,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:56:37,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [383326550] [2021-11-23 02:56:37,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:37,773 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:56:37,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:56:37,775 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:56:37,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-23 02:56:38,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:38,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:56:38,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:56:38,124 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 [2021-11-23 02:56:38,154 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 [2021-11-23 02:56:38,165 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 [2021-11-23 02:56:38,236 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 [2021-11-23 02:56:38,241 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 [2021-11-23 02:56:38,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:38,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:56:38,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:38,633 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:56:38,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [383326550] [2021-11-23 02:56:38,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [383326550] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:56:38,634 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:56:38,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-23 02:56:38,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610955773] [2021-11-23 02:56:38,634 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:56:38,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:56:38,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:56:38,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:56:38,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:56:38,635 INFO L87 Difference]: Start difference. First operand 1168 states and 1453 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) [2021-11-23 02:56:46,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:56:46,049 INFO L93 Difference]: Finished difference Result 1167 states and 1452 transitions. [2021-11-23 02:56:46,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:56:46,051 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 [2021-11-23 02:56:46,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:56:46,058 INFO L225 Difference]: With dead ends: 1167 [2021-11-23 02:56:46,058 INFO L226 Difference]: Without dead ends: 1167 [2021-11-23 02:56:46,059 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 [2021-11-23 02:56:46,059 INFO L933 BasicCegarLoop]: 965 mSDtfsCounter, 4 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2583 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:56:46,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2583 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1280 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2021-11-23 02:56:46,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2021-11-23 02:56:46,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1167. [2021-11-23 02:56:46,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 771 states have (on average 1.8236057068741893) internal successors, (1406), 1155 states have internal predecessors, (1406), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-23 02:56:46,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1452 transitions. [2021-11-23 02:56:46,095 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1452 transitions. Word has length 65 [2021-11-23 02:56:46,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:56:46,095 INFO L470 AbstractCegarLoop]: Abstraction has 1167 states and 1452 transitions. [2021-11-23 02:56:46,095 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) [2021-11-23 02:56:46,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1452 transitions. [2021-11-23 02:56:46,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-23 02:56:46,097 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:56:46,097 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] [2021-11-23 02:56:46,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-23 02:56:46,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:56:46,312 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 02:56:46,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:56:46,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1441347596, now seen corresponding path program 1 times [2021-11-23 02:56:46,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:56:46,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839804656] [2021-11-23 02:56:46,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:46,314 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:56:46,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:56:46,316 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:56:46,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-23 02:56:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:46,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:56:46,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:56:46,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:46,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:56:46,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:46,874 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:56:46,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [839804656] [2021-11-23 02:56:46,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [839804656] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:56:46,874 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:56:46,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 02:56:46,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227569414] [2021-11-23 02:56:46,875 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:56:46,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:56:46,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:56:46,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:56:46,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:56:46,878 INFO L87 Difference]: Start difference. First operand 1167 states and 1452 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) [2021-11-23 02:56:46,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:56:46,992 INFO L93 Difference]: Finished difference Result 1177 states and 1465 transitions. [2021-11-23 02:56:46,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:56:46,993 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 [2021-11-23 02:56:46,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:56:47,005 INFO L225 Difference]: With dead ends: 1177 [2021-11-23 02:56:47,005 INFO L226 Difference]: Without dead ends: 1177 [2021-11-23 02:56:47,006 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 [2021-11-23 02:56:47,009 INFO L933 BasicCegarLoop]: 965 mSDtfsCounter, 11 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1930 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:56:47,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 1930 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:56:47,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2021-11-23 02:56:47,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1177. [2021-11-23 02:56:47,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 779 states have (on average 1.8202824133504494) internal successors, (1418), 1164 states have internal predecessors, (1418), 23 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (24), 9 states have call predecessors, (24), 23 states have call successors, (24) [2021-11-23 02:56:47,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1465 transitions. [2021-11-23 02:56:47,050 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1465 transitions. Word has length 73 [2021-11-23 02:56:47,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:56:47,051 INFO L470 AbstractCegarLoop]: Abstraction has 1177 states and 1465 transitions. [2021-11-23 02:56:47,051 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) [2021-11-23 02:56:47,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1465 transitions. [2021-11-23 02:56:47,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-23 02:56:47,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:56:47,052 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] [2021-11-23 02:56:47,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-23 02:56:47,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:56:47,268 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 02:56:47,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:56:47,269 INFO L85 PathProgramCache]: Analyzing trace with hash 954167724, now seen corresponding path program 1 times [2021-11-23 02:56:47,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:56:47,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1042173740] [2021-11-23 02:56:47,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:47,270 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:56:47,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:56:47,271 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:56:47,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-23 02:56:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:47,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:56:47,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:56:47,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:47,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:56:47,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:47,842 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:56:47,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1042173740] [2021-11-23 02:56:47,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1042173740] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:56:47,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1224052747] [2021-11-23 02:56:47,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:47,843 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:56:47,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:56:47,844 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:56:47,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-23 02:56:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:48,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:56:48,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:56:48,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:48,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:56:48,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:48,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1224052747] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:56:48,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440017562] [2021-11-23 02:56:48,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:48,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:56:48,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:56:48,389 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:56:48,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-23 02:56:48,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:48,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 02:56:48,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:56:48,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:48,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:56:49,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:49,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440017562] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:56:49,026 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 02:56:49,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-23 02:56:49,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394395524] [2021-11-23 02:56:49,027 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 02:56:49,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 02:56:49,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:56:49,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 02:56:49,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-23 02:56:49,029 INFO L87 Difference]: Start difference. First operand 1177 states and 1465 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) [2021-11-23 02:56:49,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:56:49,581 INFO L93 Difference]: Finished difference Result 1191 states and 1482 transitions. [2021-11-23 02:56:49,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 02:56:49,583 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 [2021-11-23 02:56:49,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:56:49,591 INFO L225 Difference]: With dead ends: 1191 [2021-11-23 02:56:49,591 INFO L226 Difference]: Without dead ends: 1185 [2021-11-23 02:56:49,592 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 [2021-11-23 02:56:49,592 INFO L933 BasicCegarLoop]: 966 mSDtfsCounter, 27 mSDsluCounter, 7684 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 8650 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:56:49,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 8650 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 02:56:49,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2021-11-23 02:56:49,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1183. [2021-11-23 02:56:49,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 785 states have (on average 1.8152866242038217) internal successors, (1425), 1170 states have internal predecessors, (1425), 23 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (24), 9 states have call predecessors, (24), 23 states have call successors, (24) [2021-11-23 02:56:49,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1472 transitions. [2021-11-23 02:56:49,624 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1472 transitions. Word has length 75 [2021-11-23 02:56:49,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:56:49,625 INFO L470 AbstractCegarLoop]: Abstraction has 1183 states and 1472 transitions. [2021-11-23 02:56:49,625 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) [2021-11-23 02:56:49,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1472 transitions. [2021-11-23 02:56:49,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-23 02:56:49,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:56:49,627 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:56:49,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-23 02:56:49,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2021-11-23 02:56:50,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-23 02:56:50,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:56:50,243 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 02:56:50,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:56:50,243 INFO L85 PathProgramCache]: Analyzing trace with hash -617730836, now seen corresponding path program 2 times [2021-11-23 02:56:50,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:56:50,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1309534011] [2021-11-23 02:56:50,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 02:56:50,244 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:56:50,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:56:50,245 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:56:50,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-23 02:56:50,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 02:56:50,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:56:50,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 02:56:50,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:56:51,046 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:51,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:56:51,572 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:51,573 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:56:51,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1309534011] [2021-11-23 02:56:51,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1309534011] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:56:51,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1540797375] [2021-11-23 02:56:51,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 02:56:51,573 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:56:51,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:56:51,581 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:56:51,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-23 02:56:52,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 02:56:52,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:56:52,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 02:56:52,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:56:52,599 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:52,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:56:52,844 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:56:52,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1540797375] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:56:52,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517561459] [2021-11-23 02:56:52,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 02:56:52,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:56:52,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:56:52,846 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:56:52,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-23 02:57:15,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 02:57:15,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:57:15,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-23 02:57:15,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:57:15,486 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 [2021-11-23 02:57:15,711 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 02:57:15,712 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 13 treesize of output 13 [2021-11-23 02:57:15,763 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 18 treesize of output 14 [2021-11-23 02:59:13,246 WARN L227 SmtUtils]: Spent 33.41s 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) [2021-11-23 02:59:13,246 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-23 02:59:13,247 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 77 treesize of output 81 [2021-11-23 02:59:13,974 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-23 02:59:13,975 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 127 treesize of output 40 [2021-11-23 02:59:14,121 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 15 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:59:14,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:59:16,849 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-23 02:59:16,850 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 66 treesize of output 65 [2021-11-23 03:01:46,248 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr235| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_116| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_112| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_114| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr235|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr235_116|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr235_114|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr235_112|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))))))))) (_ bv1 1))) (exists ((|v_#Ultimate.C_memset_#t~loopctr235_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$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|) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_109|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_108|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_107|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_105|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_104|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_103|) (_ bv0 32))) |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|))))))) is different from false [2021-11-23 03:02:38,404 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr235| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_116| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_118| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_112| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_114| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_120| (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr235_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_109|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_108|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_107|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_105|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_104|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_103|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$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|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr235|) (_ bv0 32)) (bvadd |#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr235_120|) (_ bv0 32)) (bvadd |#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr235_118|) (_ bv0 32)) (bvadd |#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr235_116|) (_ bv0 32)) (bvadd |#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr235_114|) (_ bv0 32)) (bvadd |#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr235_112|) (_ bv0 32))) |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|))))))))))))))))))) is different from false [2021-11-23 03:02:40,675 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-23 03:02:40,676 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 115 treesize of output 114 [2021-11-23 03:02:44,347 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr235| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_116| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_118| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_112| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_114| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_120| (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr235_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_109|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_108|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_107|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_105|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_104|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_103|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= (select (select (store |c_#memory_$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|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr235|) (_ bv0 32)) (bvadd |#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr235_120|) (_ bv0 32)) (bvadd |#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr235_118|) (_ bv0 32)) (bvadd |#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr235_116|) (_ bv0 32)) (bvadd |#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr235_114|) (_ bv0 32)) (bvadd |#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr235_112|) (_ bv0 32))) |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|)) |c_#Ultimate.C_memset_#ptr.base|))) is different from false [2021-11-23 03:02:53,165 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 10 times theorem prover too weak. 0 trivial. 11 not checked. [2021-11-23 03:02:53,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517561459] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:02:53,166 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 03:02:53,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 15, 15] total 45 [2021-11-23 03:02:53,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335912977] [2021-11-23 03:02:53,167 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 03:02:53,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-23 03:02:53,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:02:53,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-23 03:02:53,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1430, Unknown=129, NotChecked=246, Total=1980 [2021-11-23 03:02:53,170 INFO L87 Difference]: Start difference. First operand 1183 states and 1472 transitions. Second operand has 45 states, 43 states have (on average 5.372093023255814) internal successors, (231), 43 states have internal predecessors, (231), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 03:02:59,912 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr235| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_116| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_118| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_112| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_114| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_120| (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr235_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_109|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_108|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_107|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_105|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_104|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_103|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr235|) (_ bv0 32)) (bvadd |#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr235_120|) (_ bv0 32)) (bvadd |#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr235_118|) (_ bv0 32)) (bvadd |#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr235_116|) (_ bv0 32)) (bvadd |#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr235_114|) (_ bv0 32)) (bvadd |#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr235_112|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))) (= |c_old(#memory_$Pointer$.base)| |c_#memory_$Pointer$.base|)) is different from false [2021-11-23 03:03:39,121 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_#Ultimate.C_memset_#ptr.base|)) (_ bv1 1))) (exists ((|v_#Ultimate.C_memset_#t~loopctr235_83| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr235_83|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (= (_ bv1 32) |c_#Ultimate.C_memset_#t~loopctr235|) (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))))))))) (_ bv1 1))) (exists ((|v_#Ultimate.C_memset_#t~loopctr235_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$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|) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_109|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_108|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_107|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_105|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_104|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_103|) (_ bv0 32))) |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|)))))))) is different from false [2021-11-23 03:04:12,646 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_#Ultimate.C_memset_#ptr.base|)) (_ bv1 1))) (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr235| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_116| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_112| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_114| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr235|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr235_116|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr235_114|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr235_112|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))))))))) (_ bv1 1))) (exists ((|v_#Ultimate.C_memset_#t~loopctr235_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_109|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_108|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_107|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_105|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_104|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_103|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))))) (= (_ bv2 32) |c_#Ultimate.C_memset_#t~loopctr235|) (exists ((|v_#Ultimate.C_memset_#t~loopctr235_84| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_83| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr235_83|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr235_84|) (_ bv0 32))) |c_#memory_$Pointer$.base|))) is different from false [2021-11-23 03:04:31,137 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_#Ultimate.C_memset_#ptr.base|)) (_ bv1 1))) (exists ((|v_#Ultimate.C_memset_#t~loopctr235_85| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_84| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_83| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_86| (_ BitVec 32))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr235_83|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr235_84|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr235_85|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr235_86|) (_ bv0 32))))) (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr235| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr235|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))))))))) (_ bv1 1))) (exists ((|v_#Ultimate.C_memset_#t~loopctr235_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$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|) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_109|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_108|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_107|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_105|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_104|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_103|) (_ bv0 32))) |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|))))))) (= (_ bv4 32) |c_#Ultimate.C_memset_#t~loopctr235|)) is different from false [2021-11-23 03:04:33,153 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_#Ultimate.C_memset_#ptr.base|)) (_ bv1 1))) (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))))))))) (_ bv1 1))) (exists ((|v_#Ultimate.C_memset_#t~loopctr235_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_109|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_108|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_107|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_105|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_104|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_103|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))))) (= (_ bv5 32) |c_#Ultimate.C_memset_#t~loopctr235|) (exists ((|v_#Ultimate.C_memset_#t~loopctr235_85| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_84| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_83| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_87| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_86| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr235_83|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr235_84|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr235_85|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr235_86|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr235_87|) (_ bv0 32))) |c_#memory_$Pointer$.base|))) is different from false [2021-11-23 03:06:17,823 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_#Ultimate.C_memset_#ptr.base|)) (_ bv1 1))) (exists ((|v_#Ultimate.C_memset_#t~loopctr235_83| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr235_83|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr235| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr235|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))))))))) (_ bv1 1))) (exists ((|v_#Ultimate.C_memset_#t~loopctr235_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_109|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_108|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_107|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_105|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_104|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_103|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))))) (= (_ bv1 32) |c_#Ultimate.C_memset_#t~loopctr235|) (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))))))))) (_ bv1 1))) (exists ((|v_#Ultimate.C_memset_#t~loopctr235_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr235_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32))) (not (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_old(#memory_$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|) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_109|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_108|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_107|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_105|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_104|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr235_103|) (_ bv0 32))) |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|)))))))) is different from false [2021-11-23 03:07:28,262 WARN L227 SmtUtils]: Spent 14.06s on a formula simplification that was a NOOP. DAG size: 69 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:07:57,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:07:57,457 INFO L93 Difference]: Finished difference Result 1217 states and 1524 transitions. [2021-11-23 03:07:57,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-23 03:07:57,457 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 43 states have (on average 5.372093023255814) internal successors, (231), 43 states have internal predecessors, (231), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 79 [2021-11-23 03:07:57,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:07:57,466 INFO L225 Difference]: With dead ends: 1217 [2021-11-23 03:07:57,466 INFO L226 Difference]: Without dead ends: 1213 [2021-11-23 03:07:57,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 425 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 563.6s TimeCoverageRelationStatistics Valid=476, Invalid=2976, Unknown=244, NotChecked=1134, Total=4830 [2021-11-23 03:07:57,469 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 852 mSDsluCounter, 12769 mSDsCounter, 0 mSdLazyCounter, 6847 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 13301 SdHoareTripleChecker+Invalid, 15440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 6847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8546 IncrementalHoareTripleChecker+Unchecked, 32.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:07:57,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [871 Valid, 13301 Invalid, 15440 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 6847 Invalid, 0 Unknown, 8546 Unchecked, 32.7s Time] [2021-11-23 03:07:57,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2021-11-23 03:07:57,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1190. [2021-11-23 03:07:57,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1190 states, 792 states have (on average 1.8080808080808082) internal successors, (1432), 1177 states have internal predecessors, (1432), 23 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (24), 9 states have call predecessors, (24), 23 states have call successors, (24) [2021-11-23 03:07:57,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1479 transitions. [2021-11-23 03:07:57,499 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1479 transitions. Word has length 79 [2021-11-23 03:07:57,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:07:57,500 INFO L470 AbstractCegarLoop]: Abstraction has 1190 states and 1479 transitions. [2021-11-23 03:07:57,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 43 states have (on average 5.372093023255814) internal successors, (231), 43 states have internal predecessors, (231), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 03:07:57,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1479 transitions. [2021-11-23 03:07:57,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-23 03:07:57,502 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:07:57,502 INFO L514 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:07:57,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-11-23 03:07:57,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-11-23 03:07:57,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-11-23 03:07:58,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:07:58,107 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-23 03:07:58,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:07:58,108 INFO L85 PathProgramCache]: Analyzing trace with hash 174219289, now seen corresponding path program 3 times [2021-11-23 03:07:58,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:07:58,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [685932428] [2021-11-23 03:07:58,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 03:07:58,117 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:07:58,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:07:58,118 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:07:58,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-23 03:07:59,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-23 03:07:59,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:07:59,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-23 03:07:59,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:08:00,346 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:08:00,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:08:04,129 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:08:04,129 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:08:04,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [685932428] [2021-11-23 03:08:04,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [685932428] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:08:04,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [83432718] [2021-11-23 03:08:04,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 03:08:04,130 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 03:08:04,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 03:08:04,131 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 03:08:04,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-23 03:08:06,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-23 03:08:06,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:08:06,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-23 03:08:06,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:08:06,662 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:08:06,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:08:07,610 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:08:07,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [83432718] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:08:07,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082791081] [2021-11-23 03:08:07,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 03:08:07,611 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:08:07,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:08:07,621 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:08:07,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9be6d66f-57ba-4814-9ed2-a1cacbf56ae4/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process