./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF --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 501447f5c37550c3f5e8fdfcef22269dce5065ef789f4faf9fbe7fcfc263a044 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:30:46,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:30:46,048 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:30:46,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:30:46,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:30:46,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:30:46,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:30:46,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:30:46,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:30:46,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:30:46,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:30:46,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:30:46,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:30:46,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:30:46,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:30:46,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:30:46,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:30:46,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:30:46,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:30:46,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:30:46,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:30:46,125 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:30:46,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:30:46,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:30:46,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:30:46,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:30:46,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:30:46,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:30:46,136 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:30:46,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:30:46,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:30:46,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:30:46,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:30:46,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:30:46,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:30:46,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:30:46,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:30:46,145 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:30:46,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:30:46,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:30:46,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:30:46,148 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-13 01:30:46,201 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:30:46,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:30:46,206 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:30:46,206 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:30:46,206 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:30:46,214 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:30:46,214 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:30:46,215 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:30:46,215 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:30:46,215 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:30:46,216 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:30:46,217 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:30:46,217 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:30:46,217 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:30:46,218 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:30:46,218 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:30:46,219 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 01:30:46,219 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 01:30:46,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:30:46,220 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 01:30:46,220 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 01:30:46,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:30:46,221 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 01:30:46,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:30:46,221 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 01:30:46,221 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 01:30:46,222 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 01:30:46,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:30:46,222 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:30:46,222 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 01:30:46,223 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:30:46,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:30:46,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:30:46,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:30:46,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:30:46,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:30:46,225 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:30:46,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:30:46,225 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:30:46,225 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:30:46,226 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_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 501447f5c37550c3f5e8fdfcef22269dce5065ef789f4faf9fbe7fcfc263a044 [2021-11-13 01:30:46,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:30:46,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:30:46,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:30:46,566 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:30:46,567 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:30:46,569 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i [2021-11-13 01:30:46,657 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/data/8c33edd8d/77c79e6ca16c467e8a5fcb6d188d18b7/FLAG26697138a [2021-11-13 01:30:47,419 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:30:47,420 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i [2021-11-13 01:30:47,463 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/data/8c33edd8d/77c79e6ca16c467e8a5fcb6d188d18b7/FLAG26697138a [2021-11-13 01:30:47,537 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/data/8c33edd8d/77c79e6ca16c467e8a5fcb6d188d18b7 [2021-11-13 01:30:47,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:30:47,545 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:30:47,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:30:47,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:30:47,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:30:47,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:30:47" (1/1) ... [2021-11-13 01:30:47,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6faf9014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:47, skipping insertion in model container [2021-11-13 01:30:47,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:30:47" (1/1) ... [2021-11-13 01:30:47,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:30:47,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:30:48,244 WARN L228 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_85de4685-9924-471d-8523-6f8c86ba10a0/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i[33021,33034] [2021-11-13 01:30:48,495 WARN L228 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_85de4685-9924-471d-8523-6f8c86ba10a0/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i[84583,84596] [2021-11-13 01:30:48,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:30:48,511 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) [2021-11-13 01:30:48,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3d8dcfd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:48, skipping insertion in model container [2021-11-13 01:30:48,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:30:48,513 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 01:30:48,515 INFO L158 Benchmark]: Toolchain (without parser) took 968.35ms. Allocated memory is still 104.9MB. Free memory was 60.3MB in the beginning and 57.8MB in the end (delta: 2.6MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2021-11-13 01:30:48,516 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 104.9MB. Free memory was 82.1MB in the beginning and 82.0MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:30:48,517 INFO L158 Benchmark]: CACSL2BoogieTranslator took 964.65ms. Allocated memory is still 104.9MB. Free memory was 60.1MB in the beginning and 58.1MB in the end (delta: 2.1MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2021-11-13 01:30:48,519 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 104.9MB. Free memory was 82.1MB in the beginning and 82.0MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 964.65ms. Allocated memory is still 104.9MB. Free memory was 60.1MB in the beginning and 58.1MB in the end (delta: 2.1MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2221]: 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_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF --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 501447f5c37550c3f5e8fdfcef22269dce5065ef789f4faf9fbe7fcfc263a044 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:30:51,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:30:51,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:30:51,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:30:51,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:30:51,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:30:51,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:30:51,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:30:51,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:30:51,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:30:51,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:30:51,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:30:51,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:30:51,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:30:51,334 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:30:51,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:30:51,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:30:51,344 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:30:51,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:30:51,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:30:51,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:30:51,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:30:51,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:30:51,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:30:51,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:30:51,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:30:51,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:30:51,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:30:51,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:30:51,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:30:51,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:30:51,387 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:30:51,390 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:30:51,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:30:51,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:30:51,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:30:51,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:30:51,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:30:51,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:30:51,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:30:51,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:30:51,405 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-13 01:30:51,457 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:30:51,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:30:51,459 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:30:51,460 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:30:51,460 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:30:51,460 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:30:51,461 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:30:51,461 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:30:51,461 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:30:51,462 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:30:51,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 01:30:51,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 01:30:51,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:30:51,466 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 01:30:51,466 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 01:30:51,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:30:51,467 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 01:30:51,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:30:51,467 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 01:30:51,468 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 01:30:51,468 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 01:30:51,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:30:51,469 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:30:51,469 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 01:30:51,469 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 01:30:51,469 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 01:30:51,470 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:30:51,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:30:51,470 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 01:30:51,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:30:51,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:30:51,471 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:30:51,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:30:51,472 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 01:30:51,473 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 01:30:51,473 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:30:51,473 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:30:51,474 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_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 501447f5c37550c3f5e8fdfcef22269dce5065ef789f4faf9fbe7fcfc263a044 [2021-11-13 01:30:51,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:30:51,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:30:51,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:30:51,914 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:30:51,915 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:30:51,916 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i [2021-11-13 01:30:51,995 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/data/e55e3b149/3f73b52215614199894c7284bcc4935b/FLAG42adbfe9b [2021-11-13 01:30:52,968 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:30:52,969 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i [2021-11-13 01:30:52,999 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/data/e55e3b149/3f73b52215614199894c7284bcc4935b/FLAG42adbfe9b [2021-11-13 01:30:53,497 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/data/e55e3b149/3f73b52215614199894c7284bcc4935b [2021-11-13 01:30:53,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:30:53,502 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:30:53,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:30:53,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:30:53,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:30:53,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:30:53" (1/1) ... [2021-11-13 01:30:53,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@790b7d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:53, skipping insertion in model container [2021-11-13 01:30:53,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:30:53" (1/1) ... [2021-11-13 01:30:53,521 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:30:53,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:30:54,248 WARN L228 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_85de4685-9924-471d-8523-6f8c86ba10a0/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i[33021,33034] [2021-11-13 01:30:54,618 WARN L228 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_85de4685-9924-471d-8523-6f8c86ba10a0/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i[84583,84596] [2021-11-13 01:30:54,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:30:54,638 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 01:30:54,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:30:54,755 WARN L228 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_85de4685-9924-471d-8523-6f8c86ba10a0/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i[33021,33034] [2021-11-13 01:30:54,955 WARN L228 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_85de4685-9924-471d-8523-6f8c86ba10a0/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i[84583,84596] [2021-11-13 01:30:54,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:30:54,977 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:30:55,029 WARN L228 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_85de4685-9924-471d-8523-6f8c86ba10a0/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i[33021,33034] [2021-11-13 01:30:55,165 WARN L228 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_85de4685-9924-471d-8523-6f8c86ba10a0/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i[84583,84596] [2021-11-13 01:30:55,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:30:55,232 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:30:55,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:55 WrapperNode [2021-11-13 01:30:55,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:30:55,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:30:55,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:30:55,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:30:55,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:55" (1/1) ... [2021-11-13 01:30:55,329 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:55" (1/1) ... [2021-11-13 01:30:55,479 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:30:55,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:30:55,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:30:55,481 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:30:55,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:55" (1/1) ... [2021-11-13 01:30:55,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:55" (1/1) ... [2021-11-13 01:30:55,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:55" (1/1) ... [2021-11-13 01:30:55,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:55" (1/1) ... [2021-11-13 01:30:55,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:55" (1/1) ... [2021-11-13 01:30:55,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:55" (1/1) ... [2021-11-13 01:30:55,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:55" (1/1) ... [2021-11-13 01:30:55,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:30:55,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:30:55,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:30:55,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:30:55,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:55" (1/1) ... [2021-11-13 01:30:55,790 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:30:55,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:30:55,819 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:30:55,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:30:55,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 01:30:55,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 01:30:55,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 01:30:55,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 01:30:55,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 01:30:55,920 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 01:30:55,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 01:30:55,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 01:30:55,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:30:55,921 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-13 01:30:55,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 01:30:55,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 01:30:55,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 01:30:55,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 01:30:55,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:30:55,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:30:56,241 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 01:31:03,041 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:31:03,042 INFO L299 CfgBuilder]: Removed 54 assume(true) statements. [2021-11-13 01:31:03,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:31:03 BoogieIcfgContainer [2021-11-13 01:31:03,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:31:03,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:31:03,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:31:03,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:31:03,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:30:53" (1/3) ... [2021-11-13 01:31:03,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@497bcff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:31:03, skipping insertion in model container [2021-11-13 01:31:03,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:30:55" (2/3) ... [2021-11-13 01:31:03,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@497bcff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:31:03, skipping insertion in model container [2021-11-13 01:31:03,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:31:03" (3/3) ... [2021-11-13 01:31:03,057 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test9-1.i [2021-11-13 01:31:03,063 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:31:03,064 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 431 error locations. [2021-11-13 01:31:03,116 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:31:03,124 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 [2021-11-13 01:31:03,126 INFO L340 AbstractCegarLoop]: Starting to check reachability of 431 error locations. [2021-11-13 01:31:03,201 INFO L276 IsEmpty]: Start isEmpty. Operand has 1872 states, 938 states have (on average 2.1023454157782515) internal successors, (1972), 1866 states have internal predecessors, (1972), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-13 01:31:03,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-13 01:31:03,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:03,209 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-13 01:31:03,211 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 01:31:03,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:03,222 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2021-11-13 01:31:03,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:03,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1152118214] [2021-11-13 01:31:03,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:03,238 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:03,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:03,248 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:03,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 01:31:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:03,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:31:03,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:03,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 01:31:03,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:03,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:03,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:03,583 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:03,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1152118214] [2021-11-13 01:31:03,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1152118214] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:03,591 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:31:03,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 01:31:03,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754363769] [2021-11-13 01:31:03,594 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:03,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:31:03,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:03,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:31:03,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:31:03,664 INFO L87 Difference]: Start difference. First operand has 1872 states, 938 states have (on average 2.1023454157782515) internal successors, (1972), 1866 states have internal predecessors, (1972), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) 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) [2021-11-13 01:31:06,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:06,927 INFO L93 Difference]: Finished difference Result 1859 states and 2905 transitions. [2021-11-13 01:31:06,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:31:06,930 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 [2021-11-13 01:31:06,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:06,981 INFO L225 Difference]: With dead ends: 1859 [2021-11-13 01:31:06,981 INFO L226 Difference]: Without dead ends: 1857 [2021-11-13 01:31:06,983 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 [2021-11-13 01:31:06,987 INFO L933 BasicCegarLoop]: 2515 mSDtfsCounter, 1794 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2462.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2297 SdHoareTripleChecker+Valid, 2562 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.77ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3003.36ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:06,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2297 Valid, 2562 Invalid, 954 Unknown, 0 Unchecked, 42.77ms Time], IncrementalHoareTripleChecker [16 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 3003.36ms Time] [2021-11-13 01:31:07,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2021-11-13 01:31:07,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 1856. [2021-11-13 01:31:07,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 938 states have (on average 2.0223880597014925) internal successors, (1897), 1850 states have internal predecessors, (1897), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-13 01:31:07,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 2903 transitions. [2021-11-13 01:31:07,601 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 2903 transitions. Word has length 3 [2021-11-13 01:31:07,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:07,602 INFO L470 AbstractCegarLoop]: Abstraction has 1856 states and 2903 transitions. [2021-11-13 01:31:07,602 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) [2021-11-13 01:31:07,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 2903 transitions. [2021-11-13 01:31:07,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-13 01:31:07,603 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:07,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-13 01:31:07,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:07,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:07,821 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 01:31:07,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:07,823 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2021-11-13 01:31:07,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:07,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1459956138] [2021-11-13 01:31:07,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:07,825 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:07,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:07,826 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:07,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 01:31:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:07,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:31:07,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:07,967 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 [2021-11-13 01:31:07,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:07,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:08,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:08,050 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:08,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1459956138] [2021-11-13 01:31:08,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1459956138] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:08,051 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:31:08,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 01:31:08,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134527126] [2021-11-13 01:31:08,052 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:08,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:31:08,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:08,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:31:08,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:31:08,056 INFO L87 Difference]: Start difference. First operand 1856 states and 2903 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) [2021-11-13 01:31:18,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:18,895 INFO L93 Difference]: Finished difference Result 3140 states and 5211 transitions. [2021-11-13 01:31:18,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:31:18,896 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 [2021-11-13 01:31:18,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:18,927 INFO L225 Difference]: With dead ends: 3140 [2021-11-13 01:31:18,928 INFO L226 Difference]: Without dead ends: 3140 [2021-11-13 01:31:18,928 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 [2021-11-13 01:31:18,930 INFO L933 BasicCegarLoop]: 3162 mSDtfsCounter, 2747 mSDsluCounter, 1685 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9268.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3747 SdHoareTripleChecker+Valid, 4847 SdHoareTripleChecker+Invalid, 2397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 58.09ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10585.36ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:18,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3747 Valid, 4847 Invalid, 2397 Unknown, 0 Unchecked, 58.09ms Time], IncrementalHoareTripleChecker [18 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 10585.36ms Time] [2021-11-13 01:31:18,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2021-11-13 01:31:19,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 1891. [2021-11-13 01:31:19,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 982 states have (on average 2.0122199592668024) internal successors, (1976), 1885 states have internal predecessors, (1976), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-13 01:31:19,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 2982 transitions. [2021-11-13 01:31:19,290 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 2982 transitions. Word has length 3 [2021-11-13 01:31:19,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:19,290 INFO L470 AbstractCegarLoop]: Abstraction has 1891 states and 2982 transitions. [2021-11-13 01:31:19,290 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) [2021-11-13 01:31:19,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 2982 transitions. [2021-11-13 01:31:19,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-13 01:31:19,291 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:19,292 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:31:19,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-13 01:31:19,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:19,504 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 01:31:19,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:19,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2021-11-13 01:31:19,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:19,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1606503821] [2021-11-13 01:31:19,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:19,508 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:19,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:19,516 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:19,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 01:31:19,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:19,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:31:19,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:19,675 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 [2021-11-13 01:31:19,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:19,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:19,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:19,718 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:19,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1606503821] [2021-11-13 01:31:19,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1606503821] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:19,719 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:31:19,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 01:31:19,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020216037] [2021-11-13 01:31:19,720 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:19,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:31:19,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:19,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:31:19,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:31:19,722 INFO L87 Difference]: Start difference. First operand 1891 states and 2982 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) [2021-11-13 01:31:22,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:22,995 INFO L93 Difference]: Finished difference Result 3058 states and 5166 transitions. [2021-11-13 01:31:22,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:31:22,997 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 [2021-11-13 01:31:22,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:23,022 INFO L225 Difference]: With dead ends: 3058 [2021-11-13 01:31:23,023 INFO L226 Difference]: Without dead ends: 3058 [2021-11-13 01:31:23,023 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 [2021-11-13 01:31:23,024 INFO L933 BasicCegarLoop]: 4657 mSDtfsCounter, 1806 mSDsluCounter, 2157 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2652.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2309 SdHoareTripleChecker+Valid, 6814 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.06ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3104.72ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:23,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2309 Valid, 6814 Invalid, 1072 Unknown, 0 Unchecked, 37.06ms Time], IncrementalHoareTripleChecker [51 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 3104.72ms Time] [2021-11-13 01:31:23,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3058 states. [2021-11-13 01:31:23,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3058 to 1844. [2021-11-13 01:31:23,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1844 states, 982 states have (on average 1.9613034623217922) internal successors, (1926), 1838 states have internal predecessors, (1926), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-13 01:31:23,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 2932 transitions. [2021-11-13 01:31:23,485 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 2932 transitions. Word has length 8 [2021-11-13 01:31:23,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:23,485 INFO L470 AbstractCegarLoop]: Abstraction has 1844 states and 2932 transitions. [2021-11-13 01:31:23,486 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) [2021-11-13 01:31:23,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 2932 transitions. [2021-11-13 01:31:23,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-13 01:31:23,487 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:23,487 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:31:23,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:23,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:23,699 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 01:31:23,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:23,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2021-11-13 01:31:23,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:23,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1197812613] [2021-11-13 01:31:23,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:23,702 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:23,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:23,703 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:23,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 01:31:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:23,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:31:23,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:23,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 01:31:23,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:23,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:23,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:23,989 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:23,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1197812613] [2021-11-13 01:31:23,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1197812613] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:23,989 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:31:23,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 01:31:23,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909234669] [2021-11-13 01:31:23,990 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:23,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:31:23,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:23,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:31:23,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:31:23,992 INFO L87 Difference]: Start difference. First operand 1844 states and 2932 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) [2021-11-13 01:31:31,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:31,972 INFO L93 Difference]: Finished difference Result 3090 states and 5161 transitions. [2021-11-13 01:31:31,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:31:31,973 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 [2021-11-13 01:31:31,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:32,000 INFO L225 Difference]: With dead ends: 3090 [2021-11-13 01:31:32,001 INFO L226 Difference]: Without dead ends: 3090 [2021-11-13 01:31:32,001 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 [2021-11-13 01:31:32,002 INFO L933 BasicCegarLoop]: 4819 mSDtfsCounter, 1534 mSDsluCounter, 4624 mSDsCounter, 0 mSdLazyCounter, 1875 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6982.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2035 SdHoareTripleChecker+Valid, 9443 SdHoareTripleChecker+Invalid, 1889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.24ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7821.83ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:32,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2035 Valid, 9443 Invalid, 1889 Unknown, 0 Unchecked, 40.24ms Time], IncrementalHoareTripleChecker [14 Valid, 1875 Invalid, 0 Unknown, 0 Unchecked, 7821.83ms Time] [2021-11-13 01:31:32,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2021-11-13 01:31:32,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 1834. [2021-11-13 01:31:32,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 982 states have (on average 1.9480651731160896) internal successors, (1913), 1828 states have internal predecessors, (1913), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-13 01:31:32,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 2919 transitions. [2021-11-13 01:31:32,409 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 2919 transitions. Word has length 8 [2021-11-13 01:31:32,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:32,410 INFO L470 AbstractCegarLoop]: Abstraction has 1834 states and 2919 transitions. [2021-11-13 01:31:32,410 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) [2021-11-13 01:31:32,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 2919 transitions. [2021-11-13 01:31:32,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-13 01:31:32,411 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:32,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:31:32,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:32,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:32,628 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr429ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 01:31:32,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:32,629 INFO L85 PathProgramCache]: Analyzing trace with hash 2106406943, now seen corresponding path program 1 times [2021-11-13 01:31:32,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:32,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495936722] [2021-11-13 01:31:32,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:32,630 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:32,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:32,631 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:32,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 01:31:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:32,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:31:32,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:32,828 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:31:32,828 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:31:32,829 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 01:31:32,911 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-13 01:31:32,912 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 [2021-11-13 01:31:33,009 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-13 01:31:33,010 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 [2021-11-13 01:31:33,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:33,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:33,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:33,121 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:33,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495936722] [2021-11-13 01:31:33,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [495936722] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:33,122 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:31:33,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 01:31:33,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816377207] [2021-11-13 01:31:33,122 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:33,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:31:33,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:33,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:31:33,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:31:33,124 INFO L87 Difference]: Start difference. First operand 1834 states and 2919 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) [2021-11-13 01:31:39,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:39,223 INFO L93 Difference]: Finished difference Result 3041 states and 5145 transitions. [2021-11-13 01:31:39,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:31:39,224 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 [2021-11-13 01:31:39,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:39,250 INFO L225 Difference]: With dead ends: 3041 [2021-11-13 01:31:39,250 INFO L226 Difference]: Without dead ends: 3041 [2021-11-13 01:31:39,251 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 [2021-11-13 01:31:39,253 INFO L933 BasicCegarLoop]: 3292 mSDtfsCounter, 1227 mSDsluCounter, 10960 mSDsCounter, 0 mSdLazyCounter, 1399 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5127.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1727 SdHoareTripleChecker+Valid, 14252 SdHoareTripleChecker+Invalid, 1401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.33ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5910.02ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:39,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1727 Valid, 14252 Invalid, 1401 Unknown, 0 Unchecked, 48.33ms Time], IncrementalHoareTripleChecker [2 Valid, 1399 Invalid, 0 Unknown, 0 Unchecked, 5910.02ms Time] [2021-11-13 01:31:39,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3041 states. [2021-11-13 01:31:39,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3041 to 1834. [2021-11-13 01:31:39,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 982 states have (on average 1.9470468431771895) internal successors, (1912), 1828 states have internal predecessors, (1912), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-13 01:31:39,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 2918 transitions. [2021-11-13 01:31:39,653 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 2918 transitions. Word has length 10 [2021-11-13 01:31:39,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:39,654 INFO L470 AbstractCegarLoop]: Abstraction has 1834 states and 2918 transitions. [2021-11-13 01:31:39,654 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) [2021-11-13 01:31:39,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 2918 transitions. [2021-11-13 01:31:39,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-13 01:31:39,656 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:39,656 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:31:39,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:39,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:39,870 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 01:31:39,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:39,871 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2021-11-13 01:31:39,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:39,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [307477010] [2021-11-13 01:31:39,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:39,872 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:39,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:39,876 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:39,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 01:31:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:40,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:31:40,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:40,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:40,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:40,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:40,148 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:40,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [307477010] [2021-11-13 01:31:40,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [307477010] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:40,149 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:31:40,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:31:40,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339118352] [2021-11-13 01:31:40,150 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:40,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:31:40,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:40,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:31:40,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:31:40,152 INFO L87 Difference]: Start difference. First operand 1834 states and 2918 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) [2021-11-13 01:31:41,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:41,362 INFO L93 Difference]: Finished difference Result 1801 states and 2884 transitions. [2021-11-13 01:31:41,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:31:41,363 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 [2021-11-13 01:31:41,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:41,377 INFO L225 Difference]: With dead ends: 1801 [2021-11-13 01:31:41,378 INFO L226 Difference]: Without dead ends: 1801 [2021-11-13 01:31:41,378 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 [2021-11-13 01:31:41,382 INFO L933 BasicCegarLoop]: 2789 mSDtfsCounter, 3536 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 967.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4039 SdHoareTripleChecker+Valid, 3316 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.92ms SdHoareTripleChecker+Time, 503 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1142.51ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:41,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4039 Valid, 3316 Invalid, 516 Unknown, 0 Unchecked, 18.92ms Time], IncrementalHoareTripleChecker [503 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 1142.51ms Time] [2021-11-13 01:31:41,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2021-11-13 01:31:41,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1792. [2021-11-13 01:31:41,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1792 states, 964 states have (on average 1.9387966804979253) internal successors, (1869), 1786 states have internal predecessors, (1869), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-13 01:31:41,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2875 transitions. [2021-11-13 01:31:41,594 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2875 transitions. Word has length 18 [2021-11-13 01:31:41,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:41,594 INFO L470 AbstractCegarLoop]: Abstraction has 1792 states and 2875 transitions. [2021-11-13 01:31:41,594 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) [2021-11-13 01:31:41,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2875 transitions. [2021-11-13 01:31:41,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-13 01:31:41,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:41,596 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] [2021-11-13 01:31:41,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-13 01:31:41,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:41,814 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 01:31:41,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:41,816 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2021-11-13 01:31:41,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:41,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787333537] [2021-11-13 01:31:41,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:41,817 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:41,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:41,818 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:41,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 01:31:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:41,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:31:41,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:42,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:42,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:42,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:42,102 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:42,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787333537] [2021-11-13 01:31:42,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787333537] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:42,103 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:31:42,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 01:31:42,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443365471] [2021-11-13 01:31:42,104 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:42,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:31:42,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:42,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:31:42,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:31:42,105 INFO L87 Difference]: Start difference. First operand 1792 states and 2875 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) [2021-11-13 01:31:43,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:43,375 INFO L93 Difference]: Finished difference Result 1780 states and 2856 transitions. [2021-11-13 01:31:43,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:31:43,376 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 [2021-11-13 01:31:43,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:43,391 INFO L225 Difference]: With dead ends: 1780 [2021-11-13 01:31:43,392 INFO L226 Difference]: Without dead ends: 1780 [2021-11-13 01:31:43,392 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 [2021-11-13 01:31:43,394 INFO L933 BasicCegarLoop]: 2744 mSDtfsCounter, 3468 mSDsluCounter, 3264 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1002.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3971 SdHoareTripleChecker+Valid, 6008 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.71ms SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1180.32ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:43,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3971 Valid, 6008 Invalid, 579 Unknown, 0 Unchecked, 21.71ms Time], IncrementalHoareTripleChecker [545 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 1180.32ms Time] [2021-11-13 01:31:43,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2021-11-13 01:31:43,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 1770. [2021-11-13 01:31:43,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1770 states, 956 states have (on average 1.9246861924686192) internal successors, (1840), 1764 states have internal predecessors, (1840), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-13 01:31:43,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1770 states to 1770 states and 2846 transitions. [2021-11-13 01:31:43,655 INFO L78 Accepts]: Start accepts. Automaton has 1770 states and 2846 transitions. Word has length 20 [2021-11-13 01:31:43,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:43,656 INFO L470 AbstractCegarLoop]: Abstraction has 1770 states and 2846 transitions. [2021-11-13 01:31:43,657 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) [2021-11-13 01:31:43,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1770 states and 2846 transitions. [2021-11-13 01:31:43,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-13 01:31:43,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:43,659 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] [2021-11-13 01:31:43,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:43,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:43,875 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 01:31:43,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:43,876 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2021-11-13 01:31:43,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:43,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [67800424] [2021-11-13 01:31:43,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:43,877 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:43,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:43,878 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:43,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 01:31:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:44,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:31:44,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:44,067 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 [2021-11-13 01:31:44,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:44,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:44,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:44,351 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:44,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [67800424] [2021-11-13 01:31:44,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [67800424] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:44,351 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:31:44,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:31:44,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226418071] [2021-11-13 01:31:44,352 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:44,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:31:44,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:44,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:31:44,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:31:44,353 INFO L87 Difference]: Start difference. First operand 1770 states and 2846 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) [2021-11-13 01:31:49,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:49,130 INFO L93 Difference]: Finished difference Result 2992 states and 5088 transitions. [2021-11-13 01:31:49,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:31:49,132 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 [2021-11-13 01:31:49,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:49,158 INFO L225 Difference]: With dead ends: 2992 [2021-11-13 01:31:49,158 INFO L226 Difference]: Without dead ends: 2992 [2021-11-13 01:31:49,159 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 [2021-11-13 01:31:49,160 INFO L933 BasicCegarLoop]: 2888 mSDtfsCounter, 3342 mSDsluCounter, 3343 mSDsCounter, 0 mSdLazyCounter, 1631 mSolverCounterSat, 1019 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3937.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3342 SdHoareTripleChecker+Valid, 6231 SdHoareTripleChecker+Invalid, 2650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.82ms SdHoareTripleChecker+Time, 1019 IncrementalHoareTripleChecker+Valid, 1631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4656.08ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:49,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3342 Valid, 6231 Invalid, 2650 Unknown, 0 Unchecked, 23.82ms Time], IncrementalHoareTripleChecker [1019 Valid, 1631 Invalid, 0 Unknown, 0 Unchecked, 4656.08ms Time] [2021-11-13 01:31:49,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2992 states. [2021-11-13 01:31:49,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2992 to 1766. [2021-11-13 01:31:49,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1766 states, 956 states have (on average 1.9205020920502092) internal successors, (1836), 1760 states have internal predecessors, (1836), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-13 01:31:49,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1766 states to 1766 states and 2842 transitions. [2021-11-13 01:31:49,448 INFO L78 Accepts]: Start accepts. Automaton has 1766 states and 2842 transitions. Word has length 34 [2021-11-13 01:31:49,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:49,449 INFO L470 AbstractCegarLoop]: Abstraction has 1766 states and 2842 transitions. [2021-11-13 01:31:49,449 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) [2021-11-13 01:31:49,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1766 states and 2842 transitions. [2021-11-13 01:31:49,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-13 01:31:49,450 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:49,451 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] [2021-11-13 01:31:49,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:49,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:49,666 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 01:31:49,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:49,667 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2021-11-13 01:31:49,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:49,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1656048742] [2021-11-13 01:31:49,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:49,668 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:49,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:49,669 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:49,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 01:31:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:49,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:31:49,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:49,849 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 [2021-11-13 01:31:50,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:50,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:50,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:31:50,734 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:50,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1656048742] [2021-11-13 01:31:50,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1656048742] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:50,735 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:31:50,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 01:31:50,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699978140] [2021-11-13 01:31:50,735 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:50,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:31:50,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:50,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:31:50,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:31:50,737 INFO L87 Difference]: Start difference. First operand 1766 states and 2842 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) [2021-11-13 01:32:02,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:02,504 INFO L93 Difference]: Finished difference Result 3030 states and 5092 transitions. [2021-11-13 01:32:02,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:32:02,506 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 [2021-11-13 01:32:02,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:02,525 INFO L225 Difference]: With dead ends: 3030 [2021-11-13 01:32:02,525 INFO L226 Difference]: Without dead ends: 3030 [2021-11-13 01:32:02,526 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 [2021-11-13 01:32:02,527 INFO L933 BasicCegarLoop]: 3049 mSDtfsCounter, 5662 mSDsluCounter, 3644 mSDsCounter, 0 mSdLazyCounter, 1883 mSolverCounterSat, 2011 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10195.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5662 SdHoareTripleChecker+Valid, 6693 SdHoareTripleChecker+Invalid, 3894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.13ms SdHoareTripleChecker+Time, 2011 IncrementalHoareTripleChecker+Valid, 1883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11544.81ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:02,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5662 Valid, 6693 Invalid, 3894 Unknown, 0 Unchecked, 29.13ms Time], IncrementalHoareTripleChecker [2011 Valid, 1883 Invalid, 0 Unknown, 0 Unchecked, 11544.81ms Time] [2021-11-13 01:32:02,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2021-11-13 01:32:02,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 1762. [2021-11-13 01:32:02,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1762 states, 956 states have (on average 1.9163179916317992) internal successors, (1832), 1756 states have internal predecessors, (1832), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-13 01:32:02,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1762 states to 1762 states and 2838 transitions. [2021-11-13 01:32:02,928 INFO L78 Accepts]: Start accepts. Automaton has 1762 states and 2838 transitions. Word has length 34 [2021-11-13 01:32:02,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:02,930 INFO L470 AbstractCegarLoop]: Abstraction has 1762 states and 2838 transitions. [2021-11-13 01:32:02,930 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) [2021-11-13 01:32:02,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states and 2838 transitions. [2021-11-13 01:32:02,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-13 01:32:02,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:02,937 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] [2021-11-13 01:32:02,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:03,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:03,151 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 01:32:03,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:03,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1723497600, now seen corresponding path program 1 times [2021-11-13 01:32:03,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:03,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456499671] [2021-11-13 01:32:03,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:03,153 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:03,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:03,154 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:03,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 01:32:03,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:03,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:32:03,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:03,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:03,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:03,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:03,665 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:03,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456499671] [2021-11-13 01:32:03,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456499671] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:32:03,666 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:32:03,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 01:32:03,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823796668] [2021-11-13 01:32:03,666 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:03,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:32:03,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:03,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:32:03,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:32:03,668 INFO L87 Difference]: Start difference. First operand 1762 states and 2838 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) [2021-11-13 01:32:03,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:03,765 INFO L93 Difference]: Finished difference Result 1765 states and 2837 transitions. [2021-11-13 01:32:03,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:32:03,765 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 [2021-11-13 01:32:03,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:03,788 INFO L225 Difference]: With dead ends: 1765 [2021-11-13 01:32:03,788 INFO L226 Difference]: Without dead ends: 1765 [2021-11-13 01:32:03,788 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 [2021-11-13 01:32:03,789 INFO L933 BasicCegarLoop]: 2738 mSDtfsCounter, 1715 mSDsluCounter, 3248 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2218 SdHoareTripleChecker+Valid, 5986 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.41ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.93ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:03,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2218 Valid, 5986 Invalid, 43 Unknown, 0 Unchecked, 13.41ms Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 47.93ms Time] [2021-11-13 01:32:03,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1765 states. [2021-11-13 01:32:03,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1765 to 1756. [2021-11-13 01:32:03,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1756 states, 950 states have (on average 1.9178947368421053) internal successors, (1822), 1750 states have internal predecessors, (1822), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-13 01:32:03,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1756 states to 1756 states and 2828 transitions. [2021-11-13 01:32:03,942 INFO L78 Accepts]: Start accepts. Automaton has 1756 states and 2828 transitions. Word has length 49 [2021-11-13 01:32:03,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:03,943 INFO L470 AbstractCegarLoop]: Abstraction has 1756 states and 2828 transitions. [2021-11-13 01:32:03,943 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) [2021-11-13 01:32:03,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1756 states and 2828 transitions. [2021-11-13 01:32:03,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-13 01:32:03,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:03,945 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] [2021-11-13 01:32:03,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-13 01:32:04,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:04,161 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 01:32:04,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:04,161 INFO L85 PathProgramCache]: Analyzing trace with hash 2061892788, now seen corresponding path program 1 times [2021-11-13 01:32:04,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:04,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062151075] [2021-11-13 01:32:04,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:04,162 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:04,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:04,164 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:04,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 01:32:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:04,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:32:04,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:04,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:04,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:05,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:05,379 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:05,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1062151075] [2021-11-13 01:32:05,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1062151075] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:32:05,380 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:32:05,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:32:05,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108378336] [2021-11-13 01:32:05,381 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:05,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:32:05,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:05,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:32:05,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:32:05,384 INFO L87 Difference]: Start difference. First operand 1756 states and 2828 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) [2021-11-13 01:32:05,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:05,593 INFO L93 Difference]: Finished difference Result 2946 states and 5030 transitions. [2021-11-13 01:32:05,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:32:05,594 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 [2021-11-13 01:32:05,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:05,609 INFO L225 Difference]: With dead ends: 2946 [2021-11-13 01:32:05,609 INFO L226 Difference]: Without dead ends: 2946 [2021-11-13 01:32:05,609 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 [2021-11-13 01:32:05,610 INFO L933 BasicCegarLoop]: 3375 mSDtfsCounter, 1219 mSDsluCounter, 2627 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 138.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1721 SdHoareTripleChecker+Valid, 6002 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.14ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 158.70ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:05,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1721 Valid, 6002 Invalid, 47 Unknown, 0 Unchecked, 10.14ms Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 158.70ms Time] [2021-11-13 01:32:05,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2021-11-13 01:32:05,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 2891. [2021-11-13 01:32:05,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2891 states, 1585 states have (on average 1.905993690851735) internal successors, (3021), 2885 states have internal predecessors, (3021), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-13 01:32:05,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2891 states to 2891 states and 5027 transitions. [2021-11-13 01:32:05,950 INFO L78 Accepts]: Start accepts. Automaton has 2891 states and 5027 transitions. Word has length 57 [2021-11-13 01:32:05,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:05,951 INFO L470 AbstractCegarLoop]: Abstraction has 2891 states and 5027 transitions. [2021-11-13 01:32:05,951 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) [2021-11-13 01:32:05,951 INFO L276 IsEmpty]: Start isEmpty. Operand 2891 states and 5027 transitions. [2021-11-13 01:32:05,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-13 01:32:05,952 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:05,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:32:05,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:06,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:06,168 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 01:32:06,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:06,168 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2021-11-13 01:32:06,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:06,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682314148] [2021-11-13 01:32:06,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:06,169 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:06,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:06,170 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:06,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 01:32:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:06,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:32:06,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:06,587 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 [2021-11-13 01:32:06,595 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 [2021-11-13 01:32:07,445 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-13 01:32:07,445 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 [2021-11-13 01:32:07,454 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-13 01:32:07,455 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 [2021-11-13 01:32:07,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:07,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:12,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:12,943 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:12,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682314148] [2021-11-13 01:32:12,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1682314148] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:32:12,944 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:32:12,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 01:32:12,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646432037] [2021-11-13 01:32:12,945 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:12,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:32:12,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:12,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:32:12,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-13 01:32:12,947 INFO L87 Difference]: Start difference. First operand 2891 states and 5027 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) [2021-11-13 01:32:27,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:27,186 INFO L93 Difference]: Finished difference Result 5351 states and 9545 transitions. [2021-11-13 01:32:27,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:32:27,187 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 [2021-11-13 01:32:27,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:27,205 INFO L225 Difference]: With dead ends: 5351 [2021-11-13 01:32:27,206 INFO L226 Difference]: Without dead ends: 5351 [2021-11-13 01:32:27,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-13 01:32:27,207 INFO L933 BasicCegarLoop]: 4544 mSDtfsCounter, 3130 mSDsluCounter, 4911 mSDsCounter, 0 mSdLazyCounter, 3594 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12053.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4134 SdHoareTripleChecker+Valid, 9455 SdHoareTripleChecker+Invalid, 8235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 51.74ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4600 IncrementalHoareTripleChecker+Unchecked, 13961.59ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:27,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4134 Valid, 9455 Invalid, 8235 Unknown, 0 Unchecked, 51.74ms Time], IncrementalHoareTripleChecker [41 Valid, 3594 Invalid, 0 Unknown, 4600 Unchecked, 13961.59ms Time] [2021-11-13 01:32:27,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5351 states. [2021-11-13 01:32:27,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5351 to 2869. [2021-11-13 01:32:27,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2869 states, 1595 states have (on average 1.8852664576802507) internal successors, (3007), 2863 states have internal predecessors, (3007), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-13 01:32:27,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 5013 transitions. [2021-11-13 01:32:27,953 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 5013 transitions. Word has length 60 [2021-11-13 01:32:27,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:27,954 INFO L470 AbstractCegarLoop]: Abstraction has 2869 states and 5013 transitions. [2021-11-13 01:32:27,954 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) [2021-11-13 01:32:27,955 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 5013 transitions. [2021-11-13 01:32:27,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-13 01:32:27,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:27,956 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] [2021-11-13 01:32:27,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:28,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:28,173 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 01:32:28,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:28,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1192602638, now seen corresponding path program 1 times [2021-11-13 01:32:28,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:28,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2040083687] [2021-11-13 01:32:28,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:28,175 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:28,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:28,175 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:28,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 01:32:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:28,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:32:28,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:28,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:28,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:28,671 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 [2021-11-13 01:32:28,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:28,980 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:28,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2040083687] [2021-11-13 01:32:28,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2040083687] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:32:28,980 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:32:28,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 01:32:28,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718914051] [2021-11-13 01:32:28,981 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:28,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:32:28,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:28,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:32:28,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:32:28,982 INFO L87 Difference]: Start difference. First operand 2869 states and 5013 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) [2021-11-13 01:32:34,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:34,287 INFO L93 Difference]: Finished difference Result 2867 states and 5011 transitions. [2021-11-13 01:32:34,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:32:34,287 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 [2021-11-13 01:32:34,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:34,303 INFO L225 Difference]: With dead ends: 2867 [2021-11-13 01:32:34,303 INFO L226 Difference]: Without dead ends: 2867 [2021-11-13 01:32:34,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:32:34,307 INFO L933 BasicCegarLoop]: 2385 mSDtfsCounter, 1696 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4553.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2199 SdHoareTripleChecker+Valid, 2929 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.25ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5212.06ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:34,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2199 Valid, 2929 Invalid, 1371 Unknown, 0 Unchecked, 15.25ms Time], IncrementalHoareTripleChecker [10 Valid, 1361 Invalid, 0 Unknown, 0 Unchecked, 5212.06ms Time] [2021-11-13 01:32:34,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2867 states. [2021-11-13 01:32:34,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2867 to 2867. [2021-11-13 01:32:34,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2867 states, 1595 states have (on average 1.884012539184953) internal successors, (3005), 2861 states have internal predecessors, (3005), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-13 01:32:34,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2867 states to 2867 states and 5011 transitions. [2021-11-13 01:32:34,752 INFO L78 Accepts]: Start accepts. Automaton has 2867 states and 5011 transitions. Word has length 62 [2021-11-13 01:32:34,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:34,752 INFO L470 AbstractCegarLoop]: Abstraction has 2867 states and 5011 transitions. [2021-11-13 01:32:34,752 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) [2021-11-13 01:32:34,752 INFO L276 IsEmpty]: Start isEmpty. Operand 2867 states and 5011 transitions. [2021-11-13 01:32:34,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-13 01:32:34,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:34,755 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] [2021-11-13 01:32:34,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:34,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:34,966 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 01:32:34,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:34,967 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2021-11-13 01:32:34,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:34,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705143755] [2021-11-13 01:32:34,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:34,968 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:34,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:34,969 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:35,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 01:32:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:35,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:32:35,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:35,321 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 [2021-11-13 01:32:35,334 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 [2021-11-13 01:32:35,370 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 [2021-11-13 01:32:35,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:35,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:35,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:35,515 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:35,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1705143755] [2021-11-13 01:32:35,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1705143755] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:32:35,515 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:32:35,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 01:32:35,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144914232] [2021-11-13 01:32:35,516 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:35,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:32:35,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:35,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:32:35,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:32:35,517 INFO L87 Difference]: Start difference. First operand 2867 states and 5011 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) [2021-11-13 01:32:37,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:37,926 INFO L93 Difference]: Finished difference Result 2866 states and 5010 transitions. [2021-11-13 01:32:37,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 01:32:37,927 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 [2021-11-13 01:32:37,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:37,939 INFO L225 Difference]: With dead ends: 2866 [2021-11-13 01:32:37,939 INFO L226 Difference]: Without dead ends: 2866 [2021-11-13 01:32:37,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:32:37,940 INFO L933 BasicCegarLoop]: 2702 mSDtfsCounter, 4 mSDsluCounter, 7107 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2000.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 9809 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.41ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2325.03ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:37,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 9809 Invalid, 1005 Unknown, 0 Unchecked, 15.41ms Time], IncrementalHoareTripleChecker [1 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 2325.03ms Time] [2021-11-13 01:32:37,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2021-11-13 01:32:38,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 2866. [2021-11-13 01:32:38,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2866 states, 1595 states have (on average 1.883385579937304) internal successors, (3004), 2860 states have internal predecessors, (3004), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-13 01:32:38,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 5010 transitions. [2021-11-13 01:32:38,344 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 5010 transitions. Word has length 65 [2021-11-13 01:32:38,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:38,344 INFO L470 AbstractCegarLoop]: Abstraction has 2866 states and 5010 transitions. [2021-11-13 01:32:38,344 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) [2021-11-13 01:32:38,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 5010 transitions. [2021-11-13 01:32:38,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-13 01:32:38,345 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:38,346 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] [2021-11-13 01:32:38,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:38,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:38,561 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 01:32:38,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:38,562 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2021-11-13 01:32:38,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:38,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374713752] [2021-11-13 01:32:38,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:38,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:38,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:38,564 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:38,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 01:32:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:38,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 01:32:38,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:38,908 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 [2021-11-13 01:32:38,935 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 [2021-11-13 01:32:38,944 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 [2021-11-13 01:32:39,011 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 [2021-11-13 01:32:39,016 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 [2021-11-13 01:32:39,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:39,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:39,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:39,367 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:39,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374713752] [2021-11-13 01:32:39,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1374713752] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:32:39,367 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:32:39,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-13 01:32:39,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467971984] [2021-11-13 01:32:39,368 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:39,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:32:39,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:39,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:32:39,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:32:39,370 INFO L87 Difference]: Start difference. First operand 2866 states and 5010 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) [2021-11-13 01:32:46,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:46,228 INFO L93 Difference]: Finished difference Result 2865 states and 5009 transitions. [2021-11-13 01:32:46,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 01:32:46,229 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 [2021-11-13 01:32:46,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:46,239 INFO L225 Difference]: With dead ends: 2865 [2021-11-13 01:32:46,239 INFO L226 Difference]: Without dead ends: 2865 [2021-11-13 01:32:46,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:32:46,241 INFO L933 BasicCegarLoop]: 2702 mSDtfsCounter, 3 mSDsluCounter, 9486 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6054.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12188 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.04ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6720.11ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:46,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 12188 Invalid, 1328 Unknown, 0 Unchecked, 22.04ms Time], IncrementalHoareTripleChecker [2 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 6720.11ms Time] [2021-11-13 01:32:46,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2021-11-13 01:32:46,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2865. [2021-11-13 01:32:46,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2865 states, 1594 states have (on average 1.8839397741530741) internal successors, (3003), 2859 states have internal predecessors, (3003), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-13 01:32:46,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2865 states to 2865 states and 5009 transitions. [2021-11-13 01:32:46,625 INFO L78 Accepts]: Start accepts. Automaton has 2865 states and 5009 transitions. Word has length 65 [2021-11-13 01:32:46,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:46,625 INFO L470 AbstractCegarLoop]: Abstraction has 2865 states and 5009 transitions. [2021-11-13 01:32:46,626 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) [2021-11-13 01:32:46,626 INFO L276 IsEmpty]: Start isEmpty. Operand 2865 states and 5009 transitions. [2021-11-13 01:32:46,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-13 01:32:46,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:46,627 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] [2021-11-13 01:32:46,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-13 01:32:46,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:46,841 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 01:32:46,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:46,842 INFO L85 PathProgramCache]: Analyzing trace with hash 2136756111, now seen corresponding path program 1 times [2021-11-13 01:32:46,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:46,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82759723] [2021-11-13 01:32:46,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:46,843 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:46,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:46,845 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:46,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-13 01:32:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:47,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:32:47,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:47,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:47,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:47,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:47,516 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:47,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82759723] [2021-11-13 01:32:47,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [82759723] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:32:47,516 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:32:47,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 01:32:47,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630176316] [2021-11-13 01:32:47,517 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:47,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:32:47,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:47,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:32:47,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:32:47,518 INFO L87 Difference]: Start difference. First operand 2865 states and 5009 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) [2021-11-13 01:32:47,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:47,721 INFO L93 Difference]: Finished difference Result 2875 states and 5022 transitions. [2021-11-13 01:32:47,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 01:32:47,722 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 [2021-11-13 01:32:47,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:47,742 INFO L225 Difference]: With dead ends: 2875 [2021-11-13 01:32:47,742 INFO L226 Difference]: Without dead ends: 2875 [2021-11-13 01:32:47,743 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 [2021-11-13 01:32:47,744 INFO L933 BasicCegarLoop]: 2702 mSDtfsCounter, 7 mSDsluCounter, 10791 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 13493 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.74ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 102.20ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:47,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 13493 Invalid, 42 Unknown, 0 Unchecked, 21.74ms Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 102.20ms Time] [2021-11-13 01:32:47,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2021-11-13 01:32:48,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 2875. [2021-11-13 01:32:48,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2875 states, 1602 states have (on average 1.8820224719101124) internal successors, (3015), 2868 states have internal predecessors, (3015), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2021-11-13 01:32:48,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 5022 transitions. [2021-11-13 01:32:48,049 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 5022 transitions. Word has length 73 [2021-11-13 01:32:48,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:48,050 INFO L470 AbstractCegarLoop]: Abstraction has 2875 states and 5022 transitions. [2021-11-13 01:32:48,050 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) [2021-11-13 01:32:48,050 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 5022 transitions. [2021-11-13 01:32:48,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-13 01:32:48,051 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:48,052 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] [2021-11-13 01:32:48,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:48,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:48,274 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 01:32:48,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:48,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1952942191, now seen corresponding path program 1 times [2021-11-13 01:32:48,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:48,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1318943030] [2021-11-13 01:32:48,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:48,275 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:48,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:48,276 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:48,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-13 01:32:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:48,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:32:48,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:48,654 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:48,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:48,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:48,933 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:48,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1318943030] [2021-11-13 01:32:48,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1318943030] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:32:48,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1980012309] [2021-11-13 01:32:48,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:48,934 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:32:48,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:32:48,936 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:32:48,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-13 01:32:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:49,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:32:49,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:49,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:49,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:49,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:49,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1980012309] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:32:49,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056712741] [2021-11-13 01:32:49,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:49,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:32:49,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:32:49,553 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:32:49,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-13 01:32:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:49,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:32:49,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:49,939 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:49,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:50,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:50,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056712741] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:32:50,223 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 01:32:50,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-13 01:32:50,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160239968] [2021-11-13 01:32:50,224 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 01:32:50,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-13 01:32:50,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:50,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-13 01:32:50,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-13 01:32:50,226 INFO L87 Difference]: Start difference. First operand 2875 states and 5022 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) [2021-11-13 01:32:50,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:50,811 INFO L93 Difference]: Finished difference Result 2889 states and 5039 transitions. [2021-11-13 01:32:50,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 01:32:50,812 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 [2021-11-13 01:32:50,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:50,831 INFO L225 Difference]: With dead ends: 2889 [2021-11-13 01:32:50,832 INFO L226 Difference]: Without dead ends: 2883 [2021-11-13 01:32:50,832 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 [2021-11-13 01:32:50,833 INFO L933 BasicCegarLoop]: 2703 mSDtfsCounter, 29 mSDsluCounter, 18883 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 205.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 21586 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.36ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 233.10ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:50,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 21586 Invalid, 138 Unknown, 0 Unchecked, 31.36ms Time], IncrementalHoareTripleChecker [24 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 233.10ms Time] [2021-11-13 01:32:50,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2021-11-13 01:32:51,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 2881. [2021-11-13 01:32:51,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2881 states, 1608 states have (on average 1.8793532338308458) internal successors, (3022), 2874 states have internal predecessors, (3022), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2021-11-13 01:32:51,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 5029 transitions. [2021-11-13 01:32:51,214 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 5029 transitions. Word has length 75 [2021-11-13 01:32:51,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:51,214 INFO L470 AbstractCegarLoop]: Abstraction has 2881 states and 5029 transitions. [2021-11-13 01:32:51,215 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) [2021-11-13 01:32:51,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 5029 transitions. [2021-11-13 01:32:51,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-13 01:32:51,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:51,216 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] [2021-11-13 01:32:51,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:51,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:51,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:51,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:51,829 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 01:32:51,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:51,830 INFO L85 PathProgramCache]: Analyzing trace with hash -326381009, now seen corresponding path program 2 times [2021-11-13 01:32:51,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:51,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1591366083] [2021-11-13 01:32:51,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 01:32:51,831 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:51,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:51,833 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:51,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-13 01:32:52,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 01:32:52,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:32:52,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:32:52,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:52,545 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:52,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:53,062 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:53,062 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:53,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1591366083] [2021-11-13 01:32:53,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1591366083] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:32:53,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2049654561] [2021-11-13 01:32:53,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 01:32:53,063 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:32:53,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:32:53,075 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:32:53,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-13 01:32:53,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 01:32:53,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:32:53,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 01:32:53,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:54,108 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:54,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:54,353 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:32:54,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2049654561] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:32:54,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396228582] [2021-11-13 01:32:54,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 01:32:54,354 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:32:54,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:32:54,355 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:32:54,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-13 01:33:20,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 01:33:20,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:33:20,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-13 01:33:20,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:20,619 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 01:33:20,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-11-13 01:33:20,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-11-13 01:33:20,699 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 [2021-11-13 01:33:20,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-13 01:33:20,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-11-13 01:33:20,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2021-11-13 01:35:44,779 WARN L227 SmtUtils]: Spent 38.63s 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) [2021-11-13 01:35:44,779 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-13 01:35:44,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 143 treesize of output 135 [2021-11-13 01:36:16,739 WARN L227 SmtUtils]: Spent 31.95s on a formula simplification. DAG size of input: 118 DAG size of output: 38 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-13 01:36:16,739 INFO L354 Elim1Store]: treesize reduction 1178, result has 7.5 percent of original size [2021-11-13 01:36:16,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 183 treesize of output 226 [2021-11-13 01:36:28,079 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-13 01:36:28,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 241 treesize of output 118 [2021-11-13 01:36:28,103 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-13 01:36:28,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 94 treesize of output 46 [2021-11-13 01:36:40,278 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 14 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:36:40,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:36:50,007 WARN L227 SmtUtils]: Spent 9.05s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-13 01:37:08,335 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (let ((.cse1 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (let ((.cse2 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse1))) (let ((.cse0 (bvadd .cse2 (_ bv20 32)))) (and (bvule .cse0 (select |c_#length| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse1))) (bvule (bvadd (_ bv16 32) .cse2) .cse0))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr194_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32))) (not (let ((.cse3 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse4 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse4) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse4) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse4) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse4) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse4) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_105| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse4))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse3) (bvadd .cse3 (_ bv20 32)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr194_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32))) (not (let ((.cse5 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse7 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse8 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse9 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse10 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse11 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_105| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse12 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse6 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse5 .cse6) .cse7 .cse6) .cse8 .cse6) .cse9 .cse6) .cse10 .cse6) .cse11 .cse6))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse12) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse5 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 (_ bv0 32)) .cse10 (_ bv0 32)) .cse11 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse12)))))))) is different from false [2021-11-13 01:37:15,347 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr194_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32))) (not (let ((.cse0 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_105| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32)))))) (and (forall ((|#Ultimate.C_memset_#t~loopctr194| (_ BitVec 32))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr194|) ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse2) (bvadd .cse2 (_ bv20 32))))) (forall ((|#Ultimate.C_memset_#t~loopctr194| (_ BitVec 32))) (let ((.cse3 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr194|)) (.cse4 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse3 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse4) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse3 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse4)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr194_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32))) (not (let ((.cse5 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse7 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse8 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse9 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse10 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse11 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_105| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse12 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse6 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse5 .cse6) .cse7 .cse6) .cse8 .cse6) .cse9 .cse6) .cse10 .cse6) .cse11 .cse6))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse12) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse5 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 (_ bv0 32)) .cse10 (_ bv0 32)) .cse11 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse12)))))))) is different from true [2021-11-13 01:39:41,488 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr194_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32))) (not (let ((.cse0 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_105| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32)))))) (and (forall ((v_subst_5 (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr194| (_ BitVec 32))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr194|) .cse3) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse3) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3) .cse3) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1) .cse3))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse2) (bvadd (_ bv20 32) .cse2)))) (forall ((v_subst_6 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr194| (_ BitVec 32))) (let ((.cse4 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr194|)) (.cse6 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse7 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4)) (.cse8 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2)) (.cse9 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse5 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse4 .cse5) .cse6 .cse5) .cse7 .cse5) .cse8 .cse5))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse9)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse4 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse9)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr194_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32))) (not (let ((.cse10 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse12 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse13 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse14 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse15 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse16 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_105| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse17 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse10 .cse11) .cse12 .cse11) .cse13 .cse11) .cse14 .cse11) .cse15 .cse11) .cse16 .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse17) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse10 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)) .cse16 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse17)))))))) is different from false [2021-11-13 01:41:29,436 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr194_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32))) (not (let ((.cse0 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr194_105| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32)))))) (and (forall ((v_subst_5 (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr194| (_ BitVec 32)) (v_subst_9 (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr194|) .cse3) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_9) .cse3) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_7) .cse3) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse3) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_3) .cse3) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_1) .cse3))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse2) (bvadd (_ bv20 32) .cse2)))) (forall ((v_subst_6 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (v_subst_10 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr194| (_ BitVec 32)) (v_subst_8 (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32))) (let ((.cse4 (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr194|)) (.cse6 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_10)) (.cse7 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_8)) (.cse8 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse9 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_4)) (.cse10 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_2)) (.cse11 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse5 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse4 .cse5) .cse6 .cse5) .cse7 .cse5) .cse8 .cse5) .cse9 .cse5) .cse10 .cse5))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse11) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse4 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 (_ bv0 32)) .cse10 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse11)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr194_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr194_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32))) (not (let ((.cse12 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse14 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse15 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse16 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse17 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse18 (bvadd |v_#Ultimate.C_memset_#t~loopctr194_105| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse19 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse13 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse12 .cse13) .cse14 .cse13) .cse15 .cse13) .cse16 .cse13) .cse17 .cse13) .cse18 .cse13))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse19) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse12 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)) .cse16 (_ bv0 32)) .cse17 (_ bv0 32)) .cse18 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse19)))))))) is different from true [2021-11-13 01:42:20,180 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-13 01:42:20,181 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-13 01:42:20,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10] total 18 [2021-11-13 01:42:20,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819282929] [2021-11-13 01:42:20,181 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-13 01:42:20,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 01:42:20,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:42:20,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 01:42:20,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1109, Unknown=143, NotChecked=300, Total=1722 [2021-11-13 01:42:20,184 INFO L87 Difference]: Start difference. First operand 2881 states and 5029 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 01:43:20,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:20,787 INFO L93 Difference]: Finished difference Result 2907 states and 5065 transitions. [2021-11-13 01:43:20,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-13 01:43:20,788 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 79 [2021-11-13 01:43:20,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:20,800 INFO L225 Difference]: With dead ends: 2907 [2021-11-13 01:43:20,800 INFO L226 Difference]: Without dead ends: 2903 [2021-11-13 01:43:20,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 470.8s TimeCoverageRelationStatistics Valid=511, Invalid=2541, Unknown=156, NotChecked=452, Total=3660 [2021-11-13 01:43:20,803 INFO L933 BasicCegarLoop]: 2707 mSDtfsCounter, 84 mSDsluCounter, 18925 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 737.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 21632 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.85ms SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 818.67ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:20,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 21632 Invalid, 348 Unknown, 0 Unchecked, 29.85ms Time], IncrementalHoareTripleChecker [62 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 818.67ms Time] [2021-11-13 01:43:20,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2021-11-13 01:43:21,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 2893. [2021-11-13 01:43:21,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2893 states, 1620 states have (on average 1.8753086419753087) internal successors, (3038), 2886 states have internal predecessors, (3038), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2021-11-13 01:43:21,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2893 states to 2893 states and 5045 transitions. [2021-11-13 01:43:21,076 INFO L78 Accepts]: Start accepts. Automaton has 2893 states and 5045 transitions. Word has length 79 [2021-11-13 01:43:21,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:21,077 INFO L470 AbstractCegarLoop]: Abstraction has 2893 states and 5045 transitions. [2021-11-13 01:43:21,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 01:43:21,077 INFO L276 IsEmpty]: Start isEmpty. Operand 2893 states and 5045 transitions. [2021-11-13 01:43:21,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-13 01:43:21,078 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:21,078 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:43:21,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-13 01:43:21,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2021-11-13 01:43:21,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-13 01:43:21,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:43:21,706 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-13 01:43:21,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:21,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1928084049, now seen corresponding path program 3 times [2021-11-13 01:43:21,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:43:21,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [270280253] [2021-11-13 01:43:21,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 01:43:21,707 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:43:21,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:43:21,708 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:43:21,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-13 01:43:22,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-13 01:43:22,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:43:22,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 01:43:22,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:43:23,308 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:23,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:43:25,671 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:25,672 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:43:25,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [270280253] [2021-11-13 01:43:25,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [270280253] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:43:25,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1859148115] [2021-11-13 01:43:25,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 01:43:25,673 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:43:25,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:43:25,674 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:43:25,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-13 01:43:27,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-13 01:43:27,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:43:28,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 01:43:28,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:43:28,270 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:28,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:43:28,872 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:43:28,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1859148115] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:43:28,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459065991] [2021-11-13 01:43:28,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 01:43:28,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:43:28,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:43:28,873 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:43:28,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85de4685-9924-471d-8523-6f8c86ba10a0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process