./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8 --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 e94333448b9ec2a5ffed0adee00d968fb025c54e55196475ef51117fcee9fc3a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:52:55,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:52:55,060 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:52:55,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:52:55,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:52:55,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:52:55,133 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:52:55,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:52:55,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:52:55,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:52:55,146 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:52:55,148 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:52:55,149 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:52:55,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:52:55,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:52:55,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:52:55,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:52:55,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:52:55,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:52:55,180 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:52:55,182 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:52:55,184 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:52:55,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:52:55,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:52:55,198 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:52:55,198 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:52:55,198 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:52:55,201 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:52:55,201 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:52:55,203 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:52:55,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:52:55,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:52:55,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:52:55,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:52:55,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:52:55,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:52:55,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:52:55,212 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:52:55,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:52:55,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:52:55,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:52:55,215 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-07 00:52:55,262 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:52:55,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:52:55,264 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:52:55,265 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:52:55,265 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:52:55,265 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:52:55,265 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 00:52:55,266 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:52:55,266 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:52:55,266 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 00:52:55,267 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 00:52:55,268 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:52:55,268 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 00:52:55,268 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 00:52:55,268 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 00:52:55,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 00:52:55,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 00:52:55,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:52:55,270 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 00:52:55,270 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 00:52:55,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:52:55,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 00:52:55,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:52:55,271 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 00:52:55,271 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 00:52:55,272 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 00:52:55,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:52:55,273 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:52:55,274 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 00:52:55,274 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:52:55,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:52:55,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:52:55,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:52:55,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:52:55,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:52:55,276 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 00:52:55,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 00:52:55,276 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:52:55,276 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:52:55,277 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_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e94333448b9ec2a5ffed0adee00d968fb025c54e55196475ef51117fcee9fc3a [2021-11-07 00:52:55,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:52:55,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:52:55,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:52:55,635 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:52:55,636 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:52:55,637 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.i [2021-11-07 00:52:55,708 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/data/a7d9633e6/9c299d7287c24a9d8c91bc810a687f27/FLAGf6ce317c5 [2021-11-07 00:52:56,378 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:52:56,379 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.i [2021-11-07 00:52:56,396 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/data/a7d9633e6/9c299d7287c24a9d8c91bc810a687f27/FLAGf6ce317c5 [2021-11-07 00:52:56,641 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/data/a7d9633e6/9c299d7287c24a9d8c91bc810a687f27 [2021-11-07 00:52:56,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:52:56,645 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:52:56,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:52:56,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:52:56,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:52:56,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:56" (1/1) ... [2021-11-07 00:52:56,653 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d8722fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:56, skipping insertion in model container [2021-11-07 00:52:56,653 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:56" (1/1) ... [2021-11-07 00:52:56,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:52:56,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:52:57,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:52:57,159 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) [2021-11-07 00:52:57,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5cb91326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:57, skipping insertion in model container [2021-11-07 00:52:57,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:52:57,160 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 00:52:57,162 INFO L168 Benchmark]: Toolchain (without parser) took 516.68 ms. Allocated memory is still 94.4 MB. Free memory was 70.8 MB in the beginning and 63.5 MB in the end (delta: 7.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 00:52:57,163 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 94.4 MB. Free memory is still 68.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:52:57,164 INFO L168 Benchmark]: CACSL2BoogieTranslator took 513.95 ms. Allocated memory is still 94.4 MB. Free memory was 70.6 MB in the beginning and 63.5 MB in the end (delta: 7.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 00:52:57,166 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 94.4 MB. Free memory is still 68.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 513.95 ms. Allocated memory is still 94.4 MB. Free memory was 70.6 MB in the beginning and 63.5 MB in the end (delta: 7.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8 --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 e94333448b9ec2a5ffed0adee00d968fb025c54e55196475ef51117fcee9fc3a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:52:59,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:52:59,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:52:59,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:52:59,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:52:59,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:52:59,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:52:59,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:52:59,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:52:59,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:52:59,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:52:59,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:52:59,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:52:59,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:52:59,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:52:59,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:52:59,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:52:59,596 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:52:59,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:52:59,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:52:59,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:52:59,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:52:59,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:52:59,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:52:59,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:52:59,621 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:52:59,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:52:59,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:52:59,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:52:59,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:52:59,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:52:59,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:52:59,627 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:52:59,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:52:59,630 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:52:59,630 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:52:59,631 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:52:59,632 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:52:59,632 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:52:59,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:52:59,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:52:59,635 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-07 00:52:59,669 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:52:59,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:52:59,672 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:52:59,672 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:52:59,672 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:52:59,672 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:52:59,673 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:52:59,673 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:52:59,674 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:52:59,675 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 00:52:59,677 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 00:52:59,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:52:59,677 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 00:52:59,678 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 00:52:59,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:52:59,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 00:52:59,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:52:59,679 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 00:52:59,679 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 00:52:59,679 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 00:52:59,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:52:59,679 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:52:59,680 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 00:52:59,680 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 00:52:59,680 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 00:52:59,680 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:52:59,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:52:59,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 00:52:59,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:52:59,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:52:59,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:52:59,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:52:59,682 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 00:52:59,683 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 00:52:59,683 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:52:59,683 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:52:59,683 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_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e94333448b9ec2a5ffed0adee00d968fb025c54e55196475ef51117fcee9fc3a [2021-11-07 00:53:00,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:53:00,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:53:00,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:53:00,155 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:53:00,156 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:53:00,157 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.i [2021-11-07 00:53:00,229 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/data/c5fef1051/38feae3cd6614b18be9b8e4011c45c07/FLAG06398179e [2021-11-07 00:53:00,958 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:53:00,958 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.i [2021-11-07 00:53:00,973 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/data/c5fef1051/38feae3cd6614b18be9b8e4011c45c07/FLAG06398179e [2021-11-07 00:53:01,174 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/data/c5fef1051/38feae3cd6614b18be9b8e4011c45c07 [2021-11-07 00:53:01,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:53:01,178 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:53:01,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:01,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:53:01,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:53:01,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:01" (1/1) ... [2021-11-07 00:53:01,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79000105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:01, skipping insertion in model container [2021-11-07 00:53:01,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:01" (1/1) ... [2021-11-07 00:53:01,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:53:01,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:53:01,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:01,740 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 00:53:01,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:53:01,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:01,864 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:53:01,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:01,994 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:53:01,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:01 WrapperNode [2021-11-07 00:53:01,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:01,996 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:53:01,996 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:53:01,997 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:53:02,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:01" (1/1) ... [2021-11-07 00:53:02,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:01" (1/1) ... [2021-11-07 00:53:02,063 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:53:02,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:53:02,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:53:02,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:53:02,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:01" (1/1) ... [2021-11-07 00:53:02,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:01" (1/1) ... [2021-11-07 00:53:02,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:01" (1/1) ... [2021-11-07 00:53:02,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:01" (1/1) ... [2021-11-07 00:53:02,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:01" (1/1) ... [2021-11-07 00:53:02,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:01" (1/1) ... [2021-11-07 00:53:02,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:01" (1/1) ... [2021-11-07 00:53:02,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:53:02,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:53:02,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:53:02,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:53:02,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:01" (1/1) ... [2021-11-07 00:53:02,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:53:02,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:53:02,140 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:53:02,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:53:02,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 00:53:02,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 00:53:02,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 00:53:02,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:53:02,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 00:53:02,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 00:53:02,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 00:53:02,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 00:53:02,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 00:53:02,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:53:02,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:53:03,032 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:53:03,032 INFO L299 CfgBuilder]: Removed 42 assume(true) statements. [2021-11-07 00:53:03,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:53:03 BoogieIcfgContainer [2021-11-07 00:53:03,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:53:03,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:53:03,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:53:03,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:53:03,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:53:01" (1/3) ... [2021-11-07 00:53:03,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40dc2bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:53:03, skipping insertion in model container [2021-11-07 00:53:03,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:01" (2/3) ... [2021-11-07 00:53:03,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40dc2bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:53:03, skipping insertion in model container [2021-11-07 00:53:03,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:53:03" (3/3) ... [2021-11-07 00:53:03,046 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test15-1.i [2021-11-07 00:53:03,053 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:53:03,053 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2021-11-07 00:53:03,118 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:53:03,128 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 [2021-11-07 00:53:03,128 INFO L340 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2021-11-07 00:53:03,158 INFO L276 IsEmpty]: Start isEmpty. Operand has 122 states, 71 states have (on average 1.8450704225352113) internal successors, (131), 121 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:03,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 00:53:03,187 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:03,188 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 00:53:03,189 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-07 00:53:03,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:03,196 INFO L85 PathProgramCache]: Analyzing trace with hash 889476117, now seen corresponding path program 1 times [2021-11-07 00:53:03,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:53:03,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1794215015] [2021-11-07 00:53:03,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:03,212 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:53:03,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:53:03,215 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:53:03,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 00:53:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:03,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 00:53:03,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:03,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:03,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:03,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:03,457 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:53:03,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1794215015] [2021-11-07 00:53:03,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1794215015] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:03,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:03,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 00:53:03,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963204748] [2021-11-07 00:53:03,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 00:53:03,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:53:03,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 00:53:03,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:53:03,493 INFO L87 Difference]: Start difference. First operand has 122 states, 71 states have (on average 1.8450704225352113) internal successors, (131), 121 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:03,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:03,625 INFO L93 Difference]: Finished difference Result 122 states and 130 transitions. [2021-11-07 00:53:03,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 00:53:03,628 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-07 00:53:03,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:03,638 INFO L225 Difference]: With dead ends: 122 [2021-11-07 00:53:03,638 INFO L226 Difference]: Without dead ends: 120 [2021-11-07 00:53:03,640 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 00:53:03,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-07 00:53:03,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-11-07 00:53:03,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 70 states have (on average 1.8285714285714285) internal successors, (128), 119 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:03,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 128 transitions. [2021-11-07 00:53:03,692 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 128 transitions. Word has length 6 [2021-11-07 00:53:03,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:03,693 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 128 transitions. [2021-11-07 00:53:03,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:03,693 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 128 transitions. [2021-11-07 00:53:03,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 00:53:03,694 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:03,694 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:03,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 00:53:03,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:53:03,907 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-07 00:53:03,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:03,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1568476634, now seen corresponding path program 1 times [2021-11-07 00:53:03,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:53:03,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443772714] [2021-11-07 00:53:03,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:03,910 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:53:03,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:53:03,917 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:53:03,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 00:53:04,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:04,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 00:53:04,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:04,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:04,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:04,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:04,085 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:53:04,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443772714] [2021-11-07 00:53:04,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1443772714] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:04,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:04,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 00:53:04,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373972473] [2021-11-07 00:53:04,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 00:53:04,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:53:04,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 00:53:04,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:53:04,090 INFO L87 Difference]: Start difference. First operand 120 states and 128 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:04,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:04,226 INFO L93 Difference]: Finished difference Result 120 states and 127 transitions. [2021-11-07 00:53:04,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 00:53:04,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-07 00:53:04,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:04,230 INFO L225 Difference]: With dead ends: 120 [2021-11-07 00:53:04,230 INFO L226 Difference]: Without dead ends: 120 [2021-11-07 00:53:04,231 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 00:53:04,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-07 00:53:04,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-11-07 00:53:04,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 70 states have (on average 1.8142857142857143) internal successors, (127), 119 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:04,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 127 transitions. [2021-11-07 00:53:04,241 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 127 transitions. Word has length 9 [2021-11-07 00:53:04,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:04,242 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 127 transitions. [2021-11-07 00:53:04,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:04,243 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 127 transitions. [2021-11-07 00:53:04,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-07 00:53:04,243 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:04,243 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:04,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-07 00:53:04,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:53:04,454 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-07 00:53:04,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:04,455 INFO L85 PathProgramCache]: Analyzing trace with hash 227387980, now seen corresponding path program 1 times [2021-11-07 00:53:04,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:53:04,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [507003743] [2021-11-07 00:53:04,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:04,456 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:53:04,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:53:04,461 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:53:04,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 00:53:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:04,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 00:53:04,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:04,630 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 [2021-11-07 00:53:04,742 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-07 00:53:04,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-07 00:53:04,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:04,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:11,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:11,190 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:53:11,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [507003743] [2021-11-07 00:53:11,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [507003743] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:11,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:11,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 00:53:11,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124974501] [2021-11-07 00:53:11,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 00:53:11,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:53:11,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 00:53:11,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=49, Unknown=3, NotChecked=0, Total=72 [2021-11-07 00:53:11,193 INFO L87 Difference]: Start difference. First operand 120 states and 127 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:11,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:11,811 INFO L93 Difference]: Finished difference Result 158 states and 168 transitions. [2021-11-07 00:53:11,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 00:53:11,812 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-07 00:53:11,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:11,814 INFO L225 Difference]: With dead ends: 158 [2021-11-07 00:53:11,814 INFO L226 Difference]: Without dead ends: 158 [2021-11-07 00:53:11,815 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=54, Invalid=99, Unknown=3, NotChecked=0, Total=156 [2021-11-07 00:53:11,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-07 00:53:11,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 131. [2021-11-07 00:53:11,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 84 states have (on average 1.7857142857142858) internal successors, (150), 130 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:11,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 150 transitions. [2021-11-07 00:53:11,843 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 150 transitions. Word has length 11 [2021-11-07 00:53:11,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:11,844 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 150 transitions. [2021-11-07 00:53:11,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:11,845 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 150 transitions. [2021-11-07 00:53:11,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-07 00:53:11,845 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:11,846 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:11,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 00:53:12,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:53:12,059 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-07 00:53:12,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:12,059 INFO L85 PathProgramCache]: Analyzing trace with hash 227387981, now seen corresponding path program 1 times [2021-11-07 00:53:12,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:53:12,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [493868453] [2021-11-07 00:53:12,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:12,060 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:53:12,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:53:12,061 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:53:12,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 00:53:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:12,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 00:53:12,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:12,209 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 [2021-11-07 00:53:12,217 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 [2021-11-07 00:53:12,349 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 00:53:12,349 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 31 treesize of output 33 [2021-11-07 00:53:12,362 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 00:53:12,362 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 25 treesize of output 25 [2021-11-07 00:53:12,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:12,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:15,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:15,042 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:53:15,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [493868453] [2021-11-07 00:53:15,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [493868453] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:15,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:15,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-07 00:53:15,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579846637] [2021-11-07 00:53:15,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 00:53:15,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:53:15,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 00:53:15,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=66, Unknown=1, NotChecked=0, Total=90 [2021-11-07 00:53:15,046 INFO L87 Difference]: Start difference. First operand 131 states and 150 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:32,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:32,795 INFO L93 Difference]: Finished difference Result 151 states and 161 transitions. [2021-11-07 00:53:32,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 00:53:32,796 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-07 00:53:32,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:32,798 INFO L225 Difference]: With dead ends: 151 [2021-11-07 00:53:32,798 INFO L226 Difference]: Without dead ends: 151 [2021-11-07 00:53:32,799 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=65, Invalid=144, Unknown=1, NotChecked=0, Total=210 [2021-11-07 00:53:32,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-07 00:53:32,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 126. [2021-11-07 00:53:32,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 84 states have (on average 1.7023809523809523) internal successors, (143), 125 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:32,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 143 transitions. [2021-11-07 00:53:32,807 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 143 transitions. Word has length 11 [2021-11-07 00:53:32,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:32,808 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 143 transitions. [2021-11-07 00:53:32,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:32,808 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 143 transitions. [2021-11-07 00:53:32,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 00:53:32,809 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:32,809 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:32,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 00:53:33,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:53:33,021 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-07 00:53:33,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:33,021 INFO L85 PathProgramCache]: Analyzing trace with hash -67083689, now seen corresponding path program 1 times [2021-11-07 00:53:33,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:53:33,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1040010672] [2021-11-07 00:53:33,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:33,023 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:53:33,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:53:33,025 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:53:33,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 00:53:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:33,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 00:53:33,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:33,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-07 00:53:33,247 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 20 treesize of output 8 [2021-11-07 00:53:33,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:33,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:33,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:33,322 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:53:33,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1040010672] [2021-11-07 00:53:33,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1040010672] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:33,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:33,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-07 00:53:33,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447036581] [2021-11-07 00:53:33,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 00:53:33,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:53:33,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 00:53:33,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 00:53:33,324 INFO L87 Difference]: Start difference. First operand 126 states and 143 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:33,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:33,656 INFO L93 Difference]: Finished difference Result 123 states and 138 transitions. [2021-11-07 00:53:33,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 00:53:33,657 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-07 00:53:33,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:33,658 INFO L225 Difference]: With dead ends: 123 [2021-11-07 00:53:33,658 INFO L226 Difference]: Without dead ends: 123 [2021-11-07 00:53:33,658 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-07 00:53:33,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-07 00:53:33,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-11-07 00:53:33,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 81 states have (on average 1.7037037037037037) internal successors, (138), 122 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:33,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 138 transitions. [2021-11-07 00:53:33,666 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 138 transitions. Word has length 16 [2021-11-07 00:53:33,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:33,666 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 138 transitions. [2021-11-07 00:53:33,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:33,667 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 138 transitions. [2021-11-07 00:53:33,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 00:53:33,667 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:33,667 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:33,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-07 00:53:33,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:53:33,879 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-07 00:53:33,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:33,879 INFO L85 PathProgramCache]: Analyzing trace with hash -67086020, now seen corresponding path program 1 times [2021-11-07 00:53:33,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:53:33,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142781439] [2021-11-07 00:53:33,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:33,880 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:53:33,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:53:33,881 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:53:33,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 00:53:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:34,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 00:53:34,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:34,043 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 [2021-11-07 00:53:34,108 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 26 treesize of output 22 [2021-11-07 00:53:34,159 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 28 treesize of output 16 [2021-11-07 00:53:34,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:34,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:34,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:34,278 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:53:34,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142781439] [2021-11-07 00:53:34,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142781439] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:34,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:34,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-07 00:53:34,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192503391] [2021-11-07 00:53:34,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 00:53:34,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:53:34,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 00:53:34,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 00:53:34,281 INFO L87 Difference]: Start difference. First operand 123 states and 138 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:34,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:34,994 INFO L93 Difference]: Finished difference Result 146 states and 155 transitions. [2021-11-07 00:53:34,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 00:53:34,995 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-07 00:53:34,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:34,996 INFO L225 Difference]: With dead ends: 146 [2021-11-07 00:53:34,996 INFO L226 Difference]: Without dead ends: 146 [2021-11-07 00:53:34,996 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-07 00:53:34,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-11-07 00:53:35,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 122. [2021-11-07 00:53:35,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 81 states have (on average 1.691358024691358) internal successors, (137), 121 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:35,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 137 transitions. [2021-11-07 00:53:35,010 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 137 transitions. Word has length 16 [2021-11-07 00:53:35,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:35,010 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 137 transitions. [2021-11-07 00:53:35,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:35,011 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 137 transitions. [2021-11-07 00:53:35,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 00:53:35,011 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:35,012 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:35,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 00:53:35,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:53:35,223 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-07 00:53:35,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:35,224 INFO L85 PathProgramCache]: Analyzing trace with hash -67086019, now seen corresponding path program 1 times [2021-11-07 00:53:35,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:53:35,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125720850] [2021-11-07 00:53:35,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:35,224 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:53:35,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:53:35,225 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:53:35,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 00:53:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:35,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 00:53:35,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:35,400 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 [2021-11-07 00:53:35,475 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 [2021-11-07 00:53:35,483 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 [2021-11-07 00:53:35,559 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 [2021-11-07 00:53:35,564 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 [2021-11-07 00:53:35,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:35,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:36,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:36,128 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:53:36,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125720850] [2021-11-07 00:53:36,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125720850] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:36,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:36,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-07 00:53:36,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735366566] [2021-11-07 00:53:36,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 00:53:36,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:53:36,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 00:53:36,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-07 00:53:36,130 INFO L87 Difference]: Start difference. First operand 122 states and 137 transitions. Second operand has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:37,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:37,795 INFO L93 Difference]: Finished difference Result 171 states and 188 transitions. [2021-11-07 00:53:37,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 00:53:37,796 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-07 00:53:37,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:37,797 INFO L225 Difference]: With dead ends: 171 [2021-11-07 00:53:37,798 INFO L226 Difference]: Without dead ends: 171 [2021-11-07 00:53:37,798 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-11-07 00:53:37,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-11-07 00:53:37,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 121. [2021-11-07 00:53:37,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 81 states have (on average 1.6790123456790123) internal successors, (136), 120 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:37,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 136 transitions. [2021-11-07 00:53:37,804 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 136 transitions. Word has length 16 [2021-11-07 00:53:37,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:37,804 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 136 transitions. [2021-11-07 00:53:37,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:37,805 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 136 transitions. [2021-11-07 00:53:37,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-07 00:53:37,805 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:37,806 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:37,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-07 00:53:38,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:53:38,017 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-07 00:53:38,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:38,017 INFO L85 PathProgramCache]: Analyzing trace with hash -45155363, now seen corresponding path program 1 times [2021-11-07 00:53:38,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:53:38,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046148610] [2021-11-07 00:53:38,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:38,018 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:53:38,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:53:38,019 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:53:38,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 00:53:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:38,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 00:53:38,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:38,173 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 [2021-11-07 00:53:38,254 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-07 00:53:38,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 32 [2021-11-07 00:53:38,409 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-07 00:53:38,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2021-11-07 00:53:38,701 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 26 treesize of output 22 [2021-11-07 00:53:38,984 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 18 treesize of output 12 [2021-11-07 00:53:39,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:39,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:47,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:47,361 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:53:47,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046148610] [2021-11-07 00:53:47,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046148610] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:47,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:47,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 5] imperfect sequences [] total 12 [2021-11-07 00:53:47,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097958436] [2021-11-07 00:53:47,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 00:53:47,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:53:47,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 00:53:47,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=108, Unknown=4, NotChecked=0, Total=156 [2021-11-07 00:53:47,363 INFO L87 Difference]: Start difference. First operand 121 states and 136 transitions. Second operand has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:48,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:48,270 INFO L93 Difference]: Finished difference Result 144 states and 153 transitions. [2021-11-07 00:53:48,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 00:53:48,271 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 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 [2021-11-07 00:53:48,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:48,272 INFO L225 Difference]: With dead ends: 144 [2021-11-07 00:53:48,272 INFO L226 Difference]: Without dead ends: 144 [2021-11-07 00:53:48,273 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=120, Invalid=218, Unknown=4, NotChecked=0, Total=342 [2021-11-07 00:53:48,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-11-07 00:53:48,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 120. [2021-11-07 00:53:48,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 81 states have (on average 1.6666666666666667) internal successors, (135), 119 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:48,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 135 transitions. [2021-11-07 00:53:48,277 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 135 transitions. Word has length 18 [2021-11-07 00:53:48,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:48,277 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 135 transitions. [2021-11-07 00:53:48,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:48,278 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 135 transitions. [2021-11-07 00:53:48,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-07 00:53:48,278 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:48,279 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:48,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-07 00:53:48,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:53:48,490 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-07 00:53:48,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:48,490 INFO L85 PathProgramCache]: Analyzing trace with hash -45155362, now seen corresponding path program 1 times [2021-11-07 00:53:48,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:53:48,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [850295514] [2021-11-07 00:53:48,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:48,491 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:53:48,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:53:48,492 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:53:48,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 00:53:48,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:48,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 00:53:48,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:48,684 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 [2021-11-07 00:53:48,690 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 [2021-11-07 00:53:48,826 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 00:53:48,827 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 36 treesize of output 38 [2021-11-07 00:53:48,852 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-07 00:53:48,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 37 [2021-11-07 00:53:49,005 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 00:53:49,005 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 44 treesize of output 46 [2021-11-07 00:53:49,029 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-07 00:53:49,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2021-11-07 00:53:49,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:49,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:54,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:54,423 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:53:54,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [850295514] [2021-11-07 00:53:54,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [850295514] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:54,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:54,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-07 00:53:54,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988650222] [2021-11-07 00:53:54,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 00:53:54,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:53:54,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 00:53:54,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=96, Unknown=2, NotChecked=0, Total=132 [2021-11-07 00:53:54,425 INFO L87 Difference]: Start difference. First operand 120 states and 135 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:56,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:56,490 INFO L93 Difference]: Finished difference Result 177 states and 189 transitions. [2021-11-07 00:53:56,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 00:53:56,491 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 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 [2021-11-07 00:53:56,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:56,492 INFO L225 Difference]: With dead ends: 177 [2021-11-07 00:53:56,492 INFO L226 Difference]: Without dead ends: 177 [2021-11-07 00:53:56,493 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=100, Invalid=204, Unknown=2, NotChecked=0, Total=306 [2021-11-07 00:53:56,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-07 00:53:56,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 118. [2021-11-07 00:53:56,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 81 states have (on average 1.6419753086419753) internal successors, (133), 117 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:56,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 133 transitions. [2021-11-07 00:53:56,497 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 133 transitions. Word has length 18 [2021-11-07 00:53:56,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:56,497 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 133 transitions. [2021-11-07 00:53:56,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:56,497 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 133 transitions. [2021-11-07 00:53:56,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 00:53:56,498 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:56,498 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:56,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 00:53:56,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:53:56,708 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-07 00:53:56,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:56,709 INFO L85 PathProgramCache]: Analyzing trace with hash -444630338, now seen corresponding path program 1 times [2021-11-07 00:53:56,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:53:56,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555692162] [2021-11-07 00:53:56,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:56,709 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:53:56,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:53:56,711 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:53:56,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 00:53:56,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:56,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 00:53:56,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:56,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:56,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:57,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:57,040 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:53:57,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [555692162] [2021-11-07 00:53:57,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [555692162] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:57,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:57,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 00:53:57,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977255119] [2021-11-07 00:53:57,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:53:57,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:53:57,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:53:57,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:53:57,044 INFO L87 Difference]: Start difference. First operand 118 states and 133 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) 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) [2021-11-07 00:53:57,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:57,281 INFO L93 Difference]: Finished difference Result 141 states and 150 transitions. [2021-11-07 00:53:57,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:53:57,281 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) 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 20 [2021-11-07 00:53:57,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:57,282 INFO L225 Difference]: With dead ends: 141 [2021-11-07 00:53:57,282 INFO L226 Difference]: Without dead ends: 141 [2021-11-07 00:53:57,283 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:53:57,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-07 00:53:57,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 117. [2021-11-07 00:53:57,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 81 states have (on average 1.6296296296296295) internal successors, (132), 116 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:57,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 132 transitions. [2021-11-07 00:53:57,287 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 132 transitions. Word has length 20 [2021-11-07 00:53:57,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:57,287 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 132 transitions. [2021-11-07 00:53:57,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) 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) [2021-11-07 00:53:57,287 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 132 transitions. [2021-11-07 00:53:57,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 00:53:57,288 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:57,288 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:57,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 00:53:57,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:53:57,500 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-07 00:53:57,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:57,500 INFO L85 PathProgramCache]: Analyzing trace with hash -444630337, now seen corresponding path program 1 times [2021-11-07 00:53:57,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:53:57,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [586042065] [2021-11-07 00:53:57,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:57,501 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:53:57,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:53:57,501 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:53:57,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 00:53:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:57,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 00:53:57,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:57,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:57,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:58,031 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 [2021-11-07 00:53:58,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:58,281 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:53:58,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [586042065] [2021-11-07 00:53:58,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [586042065] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:58,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:58,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-07 00:53:58,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359808138] [2021-11-07 00:53:58,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 00:53:58,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:53:58,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 00:53:58,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-07 00:53:58,283 INFO L87 Difference]: Start difference. First operand 117 states and 132 transitions. Second operand has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:58,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:58,732 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2021-11-07 00:53:58,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 00:53:58,733 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 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 [2021-11-07 00:53:58,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:58,734 INFO L225 Difference]: With dead ends: 116 [2021-11-07 00:53:58,735 INFO L226 Difference]: Without dead ends: 116 [2021-11-07 00:53:58,735 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2021-11-07 00:53:58,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-07 00:53:58,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-11-07 00:53:58,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 81 states have (on average 1.617283950617284) internal successors, (131), 115 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:58,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 131 transitions. [2021-11-07 00:53:58,739 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 131 transitions. Word has length 20 [2021-11-07 00:53:58,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:58,739 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 131 transitions. [2021-11-07 00:53:58,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:58,740 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 131 transitions. [2021-11-07 00:53:58,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 00:53:58,741 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:58,741 INFO L513 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] [2021-11-07 00:53:58,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 00:53:58,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:53:58,953 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-07 00:53:58,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:58,953 INFO L85 PathProgramCache]: Analyzing trace with hash -2087991841, now seen corresponding path program 1 times [2021-11-07 00:53:58,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:53:58,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [156715361] [2021-11-07 00:53:58,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:58,954 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:53:58,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:53:58,955 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:53:59,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 00:53:59,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:59,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-07 00:53:59,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:59,369 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 [2021-11-07 00:53:59,430 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 21 treesize of output 13 [2021-11-07 00:53:59,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:59,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:59,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:59,640 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:53:59,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [156715361] [2021-11-07 00:53:59,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [156715361] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:59,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:59,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 6] imperfect sequences [] total 14 [2021-11-07 00:53:59,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118149968] [2021-11-07 00:53:59,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 00:53:59,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:53:59,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 00:53:59,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-11-07 00:53:59,642 INFO L87 Difference]: Start difference. First operand 116 states and 131 transitions. Second operand has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:54:00,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:00,701 INFO L93 Difference]: Finished difference Result 174 states and 186 transitions. [2021-11-07 00:54:00,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 00:54:00,701 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-07 00:54:00,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:00,702 INFO L225 Difference]: With dead ends: 174 [2021-11-07 00:54:00,703 INFO L226 Difference]: Without dead ends: 174 [2021-11-07 00:54:00,703 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2021-11-07 00:54:00,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-11-07 00:54:00,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 115. [2021-11-07 00:54:00,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 81 states have (on average 1.6049382716049383) internal successors, (130), 114 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:54:00,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 130 transitions. [2021-11-07 00:54:00,707 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 130 transitions. Word has length 22 [2021-11-07 00:54:00,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:00,708 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 130 transitions. [2021-11-07 00:54:00,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:54:00,708 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 130 transitions. [2021-11-07 00:54:00,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 00:54:00,709 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:00,709 INFO L513 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] [2021-11-07 00:54:00,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:00,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:00,912 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-07 00:54:00,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:00,912 INFO L85 PathProgramCache]: Analyzing trace with hash -2087991840, now seen corresponding path program 1 times [2021-11-07 00:54:00,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:00,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115723210] [2021-11-07 00:54:00,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:00,913 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:00,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:00,914 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:00,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 00:54:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:01,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-07 00:54:01,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:01,412 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 [2021-11-07 00:54:01,423 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 [2021-11-07 00:54:01,531 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 23 [2021-11-07 00:54:01,535 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 20 treesize of output 12 [2021-11-07 00:54:01,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:01,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:02,137 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 [2021-11-07 00:54:02,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:02,412 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:02,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115723210] [2021-11-07 00:54:02,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115723210] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:02,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:02,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 9] imperfect sequences [] total 20 [2021-11-07 00:54:02,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078144027] [2021-11-07 00:54:02,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-07 00:54:02,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:02,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-07 00:54:02,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2021-11-07 00:54:02,414 INFO L87 Difference]: Start difference. First operand 115 states and 130 transitions. Second operand has 21 states, 20 states have (on average 2.15) internal successors, (43), 21 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:54:04,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:04,062 INFO L93 Difference]: Finished difference Result 163 states and 180 transitions. [2021-11-07 00:54:04,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 00:54:04,063 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.15) internal successors, (43), 21 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-07 00:54:04,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:04,064 INFO L225 Difference]: With dead ends: 163 [2021-11-07 00:54:04,064 INFO L226 Difference]: Without dead ends: 163 [2021-11-07 00:54:04,065 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=248, Invalid=744, Unknown=0, NotChecked=0, Total=992 [2021-11-07 00:54:04,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-07 00:54:04,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 114. [2021-11-07 00:54:04,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 81 states have (on average 1.5925925925925926) internal successors, (129), 113 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:54:04,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 129 transitions. [2021-11-07 00:54:04,069 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 129 transitions. Word has length 22 [2021-11-07 00:54:04,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:04,069 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 129 transitions. [2021-11-07 00:54:04,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.15) internal successors, (43), 21 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:54:04,070 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 129 transitions. [2021-11-07 00:54:04,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 00:54:04,070 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:04,071 INFO L513 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] [2021-11-07 00:54:04,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:04,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:04,280 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-07 00:54:04,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:04,280 INFO L85 PathProgramCache]: Analyzing trace with hash -303237606, now seen corresponding path program 1 times [2021-11-07 00:54:04,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:04,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1371578700] [2021-11-07 00:54:04,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:04,281 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:04,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:04,282 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:04,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 00:54:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:04,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-07 00:54:04,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:04,594 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 [2021-11-07 00:54:04,679 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-07 00:54:04,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 32 [2021-11-07 00:54:04,859 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-07 00:54:04,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 53 [2021-11-07 00:54:05,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 34 treesize of output 30 [2021-11-07 00:54:05,710 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-07 00:54:05,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 48 [2021-11-07 00:54:05,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:05,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 67 [2021-11-07 00:54:05,898 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 [2021-11-07 00:54:06,167 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 126 treesize of output 118 [2021-11-07 00:54:06,516 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:06,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 75 [2021-11-07 00:54:06,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:06,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:07,180 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:07,184 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 00:54:17,569 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv4 32)))) (select (select (let ((.cse0 (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~intf~2.base) .cse2))) (store |c_#memory_$Pointer$.base| .cse1 (store (select |c_#memory_$Pointer$.base| .cse1) (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)) v_DerPreprocessor_1))))) (store .cse0 c_ULTIMATE.start_entry_point_~hdev~0.base (store (select .cse0 c_ULTIMATE.start_entry_point_~hdev~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset) c_ULTIMATE.start_entry_point_~intf~2.base))) c_ULTIMATE.start_entry_point_~intf~2.base) .cse2))))))))) (_ bv1 1)))) is different from false [2021-11-07 00:54:37,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:37,692 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:37,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1371578700] [2021-11-07 00:54:37,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1371578700] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:37,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:37,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17, 15] imperfect sequences [] total 31 [2021-11-07 00:54:37,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992626351] [2021-11-07 00:54:37,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-07 00:54:37,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:37,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-07 00:54:37,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=821, Unknown=11, NotChecked=58, Total=992 [2021-11-07 00:54:37,695 INFO L87 Difference]: Start difference. First operand 114 states and 129 transitions. Second operand has 32 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 32 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:54:50,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:50,679 INFO L93 Difference]: Finished difference Result 172 states and 184 transitions. [2021-11-07 00:54:50,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-07 00:54:50,680 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 32 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-07 00:54:50,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:50,681 INFO L225 Difference]: With dead ends: 172 [2021-11-07 00:54:50,681 INFO L226 Difference]: Without dead ends: 172 [2021-11-07 00:54:50,682 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 34.9s TimeCoverageRelationStatistics Valid=445, Invalid=1710, Unknown=11, NotChecked=90, Total=2256 [2021-11-07 00:54:50,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-11-07 00:54:50,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 113. [2021-11-07 00:54:50,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 81 states have (on average 1.5802469135802468) internal successors, (128), 112 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:54:50,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 128 transitions. [2021-11-07 00:54:50,686 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 128 transitions. Word has length 23 [2021-11-07 00:54:50,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:50,686 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 128 transitions. [2021-11-07 00:54:50,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 32 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:54:50,687 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 128 transitions. [2021-11-07 00:54:50,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 00:54:50,687 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:50,687 INFO L513 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] [2021-11-07 00:54:50,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:50,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:50,900 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-07 00:54:50,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:50,901 INFO L85 PathProgramCache]: Analyzing trace with hash -303237605, now seen corresponding path program 1 times [2021-11-07 00:54:50,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:50,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746058859] [2021-11-07 00:54:50,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:50,901 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:50,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:50,902 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:50,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 00:54:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:51,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-07 00:54:51,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:51,271 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 [2021-11-07 00:54:51,341 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-07 00:54:51,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-07 00:54:51,482 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 [2021-11-07 00:54:51,513 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-07 00:54:51,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 36 [2021-11-07 00:54:51,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 27 treesize of output 23 [2021-11-07 00:54:51,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2021-11-07 00:54:52,189 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-07 00:54:52,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 69 [2021-11-07 00:54:52,220 INFO L354 Elim1Store]: treesize reduction 59, result has 13.2 percent of original size [2021-11-07 00:54:52,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 44 [2021-11-07 00:54:52,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:52,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 54 [2021-11-07 00:54:52,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:52,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 85 [2021-11-07 00:54:52,921 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-11-07 00:54:52,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 54 [2021-11-07 00:54:52,939 INFO L354 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2021-11-07 00:54:52,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 35 [2021-11-07 00:54:53,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:53,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:54,315 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,316 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-11-07 00:54:54,319 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:54,320 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-11-07 00:54:56,382 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32))) (let ((.cse1 (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset)) (.cse2 (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32))) (.cse3 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv4 32)))) (bvule (bvadd (_ bv8 32) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57.base|) .cse2 v_DerPreprocessor_3)))) (store .cse0 c_ULTIMATE.start_entry_point_~hdev~0.base (store (select .cse0 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse1 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv8 32))))) c_ULTIMATE.start_entry_point_~intf~2.base) .cse3)) (select |c_#length| (select (select (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57.base|) .cse2 v_DerPreprocessor_2)))) (store .cse4 c_ULTIMATE.start_entry_point_~hdev~0.base (store (select .cse4 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse1 c_ULTIMATE.start_entry_point_~intf~2.base))) c_ULTIMATE.start_entry_point_~intf~2.base) .cse3))))) (forall ((v_DerPreprocessor_3 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32))) (let ((.cse5 (select (select (let ((.cse6 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57.base|) (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)) v_DerPreprocessor_3)))) (store .cse6 c_ULTIMATE.start_entry_point_~hdev~0.base (store (select .cse6 c_ULTIMATE.start_entry_point_~hdev~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset) (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv8 32))))) c_ULTIMATE.start_entry_point_~intf~2.base) (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv4 32))))) (bvule (bvadd .cse5 (_ bv7 32)) (bvadd (_ bv8 32) .cse5))))) is different from false [2021-11-07 00:54:58,491 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_3 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32))) (let ((.cse0 (let ((.cse3 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv4 32)))) (select (select (let ((.cse1 (let ((.cse2 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~intf~2.base) .cse3))) (store |c_#memory_$Pointer$.offset| .cse2 (store (select |c_#memory_$Pointer$.offset| .cse2) (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)) v_DerPreprocessor_3))))) (store .cse1 c_ULTIMATE.start_entry_point_~hdev~0.base (store (select .cse1 c_ULTIMATE.start_entry_point_~hdev~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset) (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv8 32))))) c_ULTIMATE.start_entry_point_~intf~2.base) .cse3)))) (bvule (bvadd (_ bv7 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32))) (let ((.cse8 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv4 32)))) (let ((.cse5 (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset)) (.cse6 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~intf~2.base) .cse8)) (.cse7 (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)))) (bvule (bvadd (_ bv8 32) (select (select (let ((.cse4 (store |c_#memory_$Pointer$.offset| .cse6 (store (select |c_#memory_$Pointer$.offset| .cse6) .cse7 v_DerPreprocessor_3)))) (store .cse4 c_ULTIMATE.start_entry_point_~hdev~0.base (store (select .cse4 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse5 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv8 32))))) c_ULTIMATE.start_entry_point_~intf~2.base) .cse8)) (select |c_#length| (select (select (let ((.cse9 (store |c_#memory_$Pointer$.base| .cse6 (store (select |c_#memory_$Pointer$.base| .cse6) .cse7 v_DerPreprocessor_2)))) (store .cse9 c_ULTIMATE.start_entry_point_~hdev~0.base (store (select .cse9 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse5 c_ULTIMATE.start_entry_point_~intf~2.base))) c_ULTIMATE.start_entry_point_~intf~2.base) .cse8))))))) is different from false [2021-11-07 00:55:02,040 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 74 treesize of output 72 [2021-11-07 00:55:09,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:09,908 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:55:09,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746058859] [2021-11-07 00:55:09,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [746058859] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:09,908 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:55:09,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17, 18] imperfect sequences [] total 34 [2021-11-07 00:55:09,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317830332] [2021-11-07 00:55:09,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-07 00:55:09,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:55:09,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-07 00:55:09,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=958, Unknown=2, NotChecked=126, Total=1190 [2021-11-07 00:55:09,910 INFO L87 Difference]: Start difference. First operand 113 states and 128 transitions. Second operand has 35 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 35 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:55:51,126 WARN L207 SmtUtils]: Spent 18.71 s on a formula simplification. DAG size of input: 173 DAG size of output: 161 [2021-11-07 00:56:16,308 WARN L207 SmtUtils]: Spent 6.49 s on a formula simplification. DAG size of input: 119 DAG size of output: 107 [2021-11-07 00:56:38,869 WARN L207 SmtUtils]: Spent 18.99 s on a formula simplification. DAG size of input: 111 DAG size of output: 111 [2021-11-07 00:56:57,707 WARN L207 SmtUtils]: Spent 7.57 s on a formula simplification. DAG size of input: 111 DAG size of output: 99 [2021-11-07 00:57:48,266 WARN L207 SmtUtils]: Spent 24.46 s on a formula simplification. DAG size of input: 131 DAG size of output: 126 [2021-11-07 00:57:50,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:57:50,469 INFO L93 Difference]: Finished difference Result 271 states and 283 transitions. [2021-11-07 00:57:50,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-07 00:57:50,471 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 35 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-07 00:57:50,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:57:50,473 INFO L225 Difference]: With dead ends: 271 [2021-11-07 00:57:50,473 INFO L226 Difference]: Without dead ends: 271 [2021-11-07 00:57:50,475 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 133.7s TimeCoverageRelationStatistics Valid=712, Invalid=2949, Unknown=7, NotChecked=238, Total=3906 [2021-11-07 00:57:50,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-11-07 00:57:50,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 112. [2021-11-07 00:57:50,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 81 states have (on average 1.5679012345679013) internal successors, (127), 111 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:50,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 127 transitions. [2021-11-07 00:57:50,480 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 127 transitions. Word has length 23 [2021-11-07 00:57:50,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:57:50,481 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 127 transitions. [2021-11-07 00:57:50,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 35 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:50,481 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 127 transitions. [2021-11-07 00:57:50,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 00:57:50,482 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:50,482 INFO L513 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] [2021-11-07 00:57:50,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:50,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:57:50,692 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-07 00:57:50,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:50,693 INFO L85 PathProgramCache]: Analyzing trace with hash 646437723, now seen corresponding path program 1 times [2021-11-07 00:57:50,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:50,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904870940] [2021-11-07 00:57:50,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:50,694 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:50,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:50,695 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:50,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 00:57:51,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:51,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 00:57:51,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:51,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:57:51,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:51,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:57:51,326 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:57:51,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904870940] [2021-11-07 00:57:51,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [904870940] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:57:51,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:57:51,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 00:57:51,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192734199] [2021-11-07 00:57:51,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 00:57:51,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:57:51,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 00:57:51,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:57:51,328 INFO L87 Difference]: Start difference. First operand 112 states and 127 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:51,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:57:51,733 INFO L93 Difference]: Finished difference Result 170 states and 182 transitions. [2021-11-07 00:57:51,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 00:57:51,733 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-07 00:57:51,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:57:51,735 INFO L225 Difference]: With dead ends: 170 [2021-11-07 00:57:51,735 INFO L226 Difference]: Without dead ends: 170 [2021-11-07 00:57:51,735 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 00:57:51,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-11-07 00:57:51,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 111. [2021-11-07 00:57:51,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 81 states have (on average 1.5555555555555556) internal successors, (126), 110 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:51,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 126 transitions. [2021-11-07 00:57:51,740 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 126 transitions. Word has length 25 [2021-11-07 00:57:51,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:57:51,741 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 126 transitions. [2021-11-07 00:57:51,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:51,741 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 126 transitions. [2021-11-07 00:57:51,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 00:57:51,742 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:51,742 INFO L513 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] [2021-11-07 00:57:51,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:51,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:57:51,952 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-07 00:57:51,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:51,952 INFO L85 PathProgramCache]: Analyzing trace with hash 646437724, now seen corresponding path program 1 times [2021-11-07 00:57:51,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:51,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822416105] [2021-11-07 00:57:51,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:51,953 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:51,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:51,954 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:51,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 00:57:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:52,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-07 00:57:52,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:52,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:57:52,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:52,887 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 24 treesize of output 20 [2021-11-07 00:57:53,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:57:53,342 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:57:53,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822416105] [2021-11-07 00:57:53,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822416105] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:57:53,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:57:53,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-11-07 00:57:53,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736949955] [2021-11-07 00:57:53,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 00:57:53,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:57:53,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 00:57:53,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-07 00:57:53,344 INFO L87 Difference]: Start difference. First operand 111 states and 126 transitions. Second operand has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 14 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) [2021-11-07 00:57:54,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:57:54,247 INFO L93 Difference]: Finished difference Result 159 states and 176 transitions. [2021-11-07 00:57:54,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 00:57:54,248 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 14 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 25 [2021-11-07 00:57:54,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:57:54,249 INFO L225 Difference]: With dead ends: 159 [2021-11-07 00:57:54,249 INFO L226 Difference]: Without dead ends: 159 [2021-11-07 00:57:54,249 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-11-07 00:57:54,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-07 00:57:54,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 110. [2021-11-07 00:57:54,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 81 states have (on average 1.5432098765432098) internal successors, (125), 109 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:54,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2021-11-07 00:57:54,253 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 25 [2021-11-07 00:57:54,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:57:54,253 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2021-11-07 00:57:54,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 14 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) [2021-11-07 00:57:54,254 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2021-11-07 00:57:54,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-07 00:57:54,255 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:54,255 INFO L513 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] [2021-11-07 00:57:54,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-07 00:57:54,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:57:54,470 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-07 00:57:54,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:54,470 INFO L85 PathProgramCache]: Analyzing trace with hash -599451216, now seen corresponding path program 1 times [2021-11-07 00:57:54,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:54,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73858509] [2021-11-07 00:57:54,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:54,471 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:54,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:54,472 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:54,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 00:57:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:54,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 00:57:54,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:54,939 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 [2021-11-07 00:57:55,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:57:55,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:55,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:57:55,317 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:57:55,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73858509] [2021-11-07 00:57:55,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [73858509] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:57:55,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:57:55,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-07 00:57:55,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512842185] [2021-11-07 00:57:55,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 00:57:55,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:57:55,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 00:57:55,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-07 00:57:55,319 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:56,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:57:56,494 INFO L93 Difference]: Finished difference Result 204 states and 223 transitions. [2021-11-07 00:57:56,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 00:57:56,495 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 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 28 [2021-11-07 00:57:56,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:57:56,496 INFO L225 Difference]: With dead ends: 204 [2021-11-07 00:57:56,496 INFO L226 Difference]: Without dead ends: 204 [2021-11-07 00:57:56,496 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-11-07 00:57:56,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-11-07 00:57:56,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 106. [2021-11-07 00:57:56,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 81 states have (on average 1.4938271604938271) internal successors, (121), 105 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:56,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 121 transitions. [2021-11-07 00:57:56,500 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 121 transitions. Word has length 28 [2021-11-07 00:57:56,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:57:56,501 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 121 transitions. [2021-11-07 00:57:56,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:56,501 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 121 transitions. [2021-11-07 00:57:56,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-07 00:57:56,502 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:56,502 INFO L513 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] [2021-11-07 00:57:56,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:56,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:57:56,708 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-07 00:57:56,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:56,708 INFO L85 PathProgramCache]: Analyzing trace with hash -599451217, now seen corresponding path program 1 times [2021-11-07 00:57:56,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:56,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243041854] [2021-11-07 00:57:56,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:56,709 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:56,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:56,710 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:56,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 00:57:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:57,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 00:57:57,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:57,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 00:57:57,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:57:57,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:57,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:57:57,309 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:57:57,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243041854] [2021-11-07 00:57:57,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [243041854] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:57:57,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:57:57,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 00:57:57,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649639371] [2021-11-07 00:57:57,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 00:57:57,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:57:57,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 00:57:57,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 00:57:57,311 INFO L87 Difference]: Start difference. First operand 106 states and 121 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:57,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:57:57,860 INFO L93 Difference]: Finished difference Result 196 states and 211 transitions. [2021-11-07 00:57:57,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 00:57:57,861 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-11-07 00:57:57,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:57:57,864 INFO L225 Difference]: With dead ends: 196 [2021-11-07 00:57:57,865 INFO L226 Difference]: Without dead ends: 196 [2021-11-07 00:57:57,865 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:57:57,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-07 00:57:57,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 102. [2021-11-07 00:57:57,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 81 states have (on average 1.4444444444444444) internal successors, (117), 101 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:57,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 117 transitions. [2021-11-07 00:57:57,877 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 117 transitions. Word has length 28 [2021-11-07 00:57:57,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:57:57,877 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 117 transitions. [2021-11-07 00:57:57,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:57,878 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 117 transitions. [2021-11-07 00:57:57,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 00:57:57,878 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:57,879 INFO L513 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] [2021-11-07 00:57:57,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:58,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:57:58,080 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-07 00:57:58,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:58,080 INFO L85 PathProgramCache]: Analyzing trace with hash -370567570, now seen corresponding path program 1 times [2021-11-07 00:57:58,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:58,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1294577194] [2021-11-07 00:57:58,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:58,081 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:58,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:58,082 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:58,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-07 00:57:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:58,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 00:57:58,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:58,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:57:58,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:58,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:57:58,744 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:57:58,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1294577194] [2021-11-07 00:57:58,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1294577194] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:57:58,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:57:58,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 00:57:58,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213622042] [2021-11-07 00:57:58,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:57:58,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:57:58,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:57:58,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:57:58,746 INFO L87 Difference]: Start difference. First operand 102 states and 117 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:59,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:57:59,079 INFO L93 Difference]: Finished difference Result 140 states and 149 transitions. [2021-11-07 00:57:59,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 00:57:59,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-07 00:57:59,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:57:59,080 INFO L225 Difference]: With dead ends: 140 [2021-11-07 00:57:59,081 INFO L226 Difference]: Without dead ends: 140 [2021-11-07 00:57:59,081 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:57:59,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-07 00:57:59,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 102. [2021-11-07 00:57:59,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 81 states have (on average 1.4320987654320987) internal successors, (116), 101 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) [2021-11-07 00:57:59,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 116 transitions. [2021-11-07 00:57:59,097 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 116 transitions. Word has length 31 [2021-11-07 00:57:59,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:57:59,098 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 116 transitions. [2021-11-07 00:57:59,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:59,099 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 116 transitions. [2021-11-07 00:57:59,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 00:57:59,099 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:59,100 INFO L513 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] [2021-11-07 00:57:59,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:59,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:57:59,309 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-07 00:57:59,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:59,310 INFO L85 PathProgramCache]: Analyzing trace with hash -370567569, now seen corresponding path program 1 times [2021-11-07 00:57:59,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:59,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788889697] [2021-11-07 00:57:59,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:59,311 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:59,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:59,311 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:59,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-07 00:57:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:59,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 00:57:59,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:58:00,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:58:00,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:58:00,343 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 [2021-11-07 00:58:00,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:58:00,597 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:58:00,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788889697] [2021-11-07 00:58:00,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788889697] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:58:00,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:58:00,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-07 00:58:00,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444618839] [2021-11-07 00:58:00,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 00:58:00,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:58:00,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 00:58:00,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-07 00:58:00,613 INFO L87 Difference]: Start difference. First operand 102 states and 116 transitions. Second operand has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:58:01,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:58:01,208 INFO L93 Difference]: Finished difference Result 122 states and 134 transitions. [2021-11-07 00:58:01,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 00:58:01,209 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-07 00:58:01,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:58:01,209 INFO L225 Difference]: With dead ends: 122 [2021-11-07 00:58:01,210 INFO L226 Difference]: Without dead ends: 122 [2021-11-07 00:58:01,210 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2021-11-07 00:58:01,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-11-07 00:58:01,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 101. [2021-11-07 00:58:01,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 81 states have (on average 1.4074074074074074) internal successors, (114), 100 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:58:01,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 114 transitions. [2021-11-07 00:58:01,213 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 114 transitions. Word has length 31 [2021-11-07 00:58:01,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:58:01,213 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 114 transitions. [2021-11-07 00:58:01,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:58:01,214 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 114 transitions. [2021-11-07 00:58:01,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-07 00:58:01,214 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:58:01,215 INFO L513 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] [2021-11-07 00:58:01,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-07 00:58:01,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:58:01,415 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-07 00:58:01,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:58:01,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1397340116, now seen corresponding path program 1 times [2021-11-07 00:58:01,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:58:01,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [679146280] [2021-11-07 00:58:01,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:58:01,417 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:58:01,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:58:01,418 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:58:01,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-07 00:58:01,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:58:01,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:58:01,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:58:02,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:58:02,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:58:02,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:58:02,084 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:58:02,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [679146280] [2021-11-07 00:58:02,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [679146280] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:58:02,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:58:02,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 00:58:02,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593239393] [2021-11-07 00:58:02,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:58:02,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:58:02,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:58:02,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:58:02,086 INFO L87 Difference]: Start difference. First operand 101 states and 114 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:58:02,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:58:02,118 INFO L93 Difference]: Finished difference Result 153 states and 171 transitions. [2021-11-07 00:58:02,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:58:02,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-07 00:58:02,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:58:02,120 INFO L225 Difference]: With dead ends: 153 [2021-11-07 00:58:02,128 INFO L226 Difference]: Without dead ends: 153 [2021-11-07 00:58:02,128 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:58:02,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-07 00:58:02,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 105. [2021-11-07 00:58:02,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 85 states have (on average 1.388235294117647) internal successors, (118), 104 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:58:02,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 118 transitions. [2021-11-07 00:58:02,131 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 118 transitions. Word has length 32 [2021-11-07 00:58:02,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:58:02,131 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 118 transitions. [2021-11-07 00:58:02,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:58:02,132 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 118 transitions. [2021-11-07 00:58:02,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 00:58:02,133 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:58:02,133 INFO L513 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] [2021-11-07 00:58:02,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-07 00:58:02,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:58:02,342 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-07 00:58:02,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:58:02,342 INFO L85 PathProgramCache]: Analyzing trace with hash 307690963, now seen corresponding path program 1 times [2021-11-07 00:58:02,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:58:02,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436290020] [2021-11-07 00:58:02,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:58:02,343 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:58:02,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:58:02,344 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:58:02,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-07 00:58:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:58:02,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:58:02,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:58:03,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:58:03,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:58:03,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:58:03,097 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:58:03,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [436290020] [2021-11-07 00:58:03,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [436290020] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:58:03,098 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:58:03,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 00:58:03,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637735211] [2021-11-07 00:58:03,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:58:03,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:58:03,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:58:03,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:58:03,100 INFO L87 Difference]: Start difference. First operand 105 states and 118 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:58:03,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:58:03,140 INFO L93 Difference]: Finished difference Result 199 states and 217 transitions. [2021-11-07 00:58:03,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 00:58:03,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-07 00:58:03,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:58:03,143 INFO L225 Difference]: With dead ends: 199 [2021-11-07 00:58:03,143 INFO L226 Difference]: Without dead ends: 199 [2021-11-07 00:58:03,143 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:58:03,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-11-07 00:58:03,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 107. [2021-11-07 00:58:03,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 87 states have (on average 1.3793103448275863) internal successors, (120), 106 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) [2021-11-07 00:58:03,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 120 transitions. [2021-11-07 00:58:03,147 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 120 transitions. Word has length 33 [2021-11-07 00:58:03,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:58:03,147 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 120 transitions. [2021-11-07 00:58:03,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:58:03,148 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 120 transitions. [2021-11-07 00:58:03,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 00:58:03,149 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:58:03,149 INFO L513 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] [2021-11-07 00:58:03,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-07 00:58:03,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:58:03,359 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-07 00:58:03,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:58:03,359 INFO L85 PathProgramCache]: Analyzing trace with hash 366853935, now seen corresponding path program 1 times [2021-11-07 00:58:03,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:58:03,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567007925] [2021-11-07 00:58:03,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:58:03,360 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:58:03,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:58:03,361 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:58:03,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-07 00:58:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:58:03,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-07 00:58:03,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:58:04,118 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 [2021-11-07 00:58:04,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:58:04,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-11-07 00:58:04,505 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 16 [2021-11-07 00:58:04,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:58:04,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:58:09,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:58:09,431 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:58:09,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567007925] [2021-11-07 00:58:09,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1567007925] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:58:09,431 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:58:09,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 8] imperfect sequences [] total 18 [2021-11-07 00:58:09,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301069045] [2021-11-07 00:58:09,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 00:58:09,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:58:09,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 00:58:09,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=288, Unknown=2, NotChecked=0, Total=342 [2021-11-07 00:58:09,433 INFO L87 Difference]: Start difference. First operand 107 states and 120 transitions. Second operand has 19 states, 18 states have (on average 3.5) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:58:11,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:58:11,596 INFO L93 Difference]: Finished difference Result 198 states and 209 transitions. [2021-11-07 00:58:11,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 00:58:11,597 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-07 00:58:11,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:58:11,598 INFO L225 Difference]: With dead ends: 198 [2021-11-07 00:58:11,598 INFO L226 Difference]: Without dead ends: 198 [2021-11-07 00:58:11,598 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=315, Invalid=805, Unknown=2, NotChecked=0, Total=1122 [2021-11-07 00:58:11,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-07 00:58:11,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 114. [2021-11-07 00:58:11,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 94 states have (on average 1.3617021276595744) internal successors, (128), 113 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:58:11,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 128 transitions. [2021-11-07 00:58:11,602 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 128 transitions. Word has length 33 [2021-11-07 00:58:11,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:58:11,603 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 128 transitions. [2021-11-07 00:58:11,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:58:11,603 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 128 transitions. [2021-11-07 00:58:11,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 00:58:11,604 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:58:11,604 INFO L513 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] [2021-11-07 00:58:11,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-07 00:58:11,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:58:11,818 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-07 00:58:11,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:58:11,818 INFO L85 PathProgramCache]: Analyzing trace with hash 366853936, now seen corresponding path program 1 times [2021-11-07 00:58:11,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:58:11,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [441364021] [2021-11-07 00:58:11,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:58:11,819 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:58:11,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:58:11,819 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:58:11,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-07 00:58:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:58:12,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-07 00:58:12,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:58:12,547 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 [2021-11-07 00:58:12,554 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 [2021-11-07 00:58:12,723 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 00:58:12,723 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 29 treesize of output 31 [2021-11-07 00:58:12,737 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 00:58:12,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2021-11-07 00:58:12,918 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 [2021-11-07 00:58:12,926 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 [2021-11-07 00:58:13,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:58:13,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-07 00:58:13,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:58:13,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-11-07 00:58:13,420 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 23 [2021-11-07 00:58:13,423 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 20 treesize of output 12 [2021-11-07 00:58:13,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:58:13,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:58:18,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:58:18,940 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:58:18,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [441364021] [2021-11-07 00:58:18,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [441364021] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:58:18,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:58:18,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 11] imperfect sequences [] total 24 [2021-11-07 00:58:18,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596675134] [2021-11-07 00:58:18,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-07 00:58:18,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:58:18,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-07 00:58:18,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=525, Unknown=1, NotChecked=0, Total=600 [2021-11-07 00:58:18,942 INFO L87 Difference]: Start difference. First operand 114 states and 128 transitions. Second operand has 25 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 25 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) [2021-11-07 00:59:45,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:59:45,064 INFO L93 Difference]: Finished difference Result 266 states and 273 transitions. [2021-11-07 00:59:45,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-07 00:59:45,066 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 25 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 33 [2021-11-07 00:59:45,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:59:45,068 INFO L225 Difference]: With dead ends: 266 [2021-11-07 00:59:45,068 INFO L226 Difference]: Without dead ends: 266 [2021-11-07 00:59:45,070 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=607, Invalid=2146, Unknown=3, NotChecked=0, Total=2756 [2021-11-07 00:59:45,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-11-07 00:59:45,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 114. [2021-11-07 00:59:45,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 94 states have (on average 1.351063829787234) internal successors, (127), 113 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:59:45,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 127 transitions. [2021-11-07 00:59:45,074 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 127 transitions. Word has length 33 [2021-11-07 00:59:45,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:59:45,075 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 127 transitions. [2021-11-07 00:59:45,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 25 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) [2021-11-07 00:59:45,075 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 127 transitions. [2021-11-07 00:59:45,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 00:59:45,075 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:59:45,075 INFO L513 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] [2021-11-07 00:59:45,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-07 00:59:45,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:59:45,291 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-07 00:59:45,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:59:45,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1184875165, now seen corresponding path program 1 times [2021-11-07 00:59:45,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:59:45,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2109830763] [2021-11-07 00:59:45,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:59:45,292 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:59:45,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:59:45,293 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:59:45,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-07 00:59:45,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:59:45,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 00:59:45,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:59:45,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:45,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:59:46,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:46,060 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:59:46,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2109830763] [2021-11-07 00:59:46,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2109830763] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:59:46,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:59:46,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 00:59:46,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916945607] [2021-11-07 00:59:46,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 00:59:46,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:59:46,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 00:59:46,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:59:46,062 INFO L87 Difference]: Start difference. First operand 114 states and 127 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 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) [2021-11-07 00:59:46,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:59:46,151 INFO L93 Difference]: Finished difference Result 146 states and 156 transitions. [2021-11-07 00:59:46,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 00:59:46,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 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 [2021-11-07 00:59:46,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:59:46,153 INFO L225 Difference]: With dead ends: 146 [2021-11-07 00:59:46,154 INFO L226 Difference]: Without dead ends: 146 [2021-11-07 00:59:46,154 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 00:59:46,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-11-07 00:59:46,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 109. [2021-11-07 00:59:46,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 89 states have (on average 1.3370786516853932) internal successors, (119), 108 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:59:46,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 119 transitions. [2021-11-07 00:59:46,159 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 119 transitions. Word has length 34 [2021-11-07 00:59:46,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:59:46,159 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 119 transitions. [2021-11-07 00:59:46,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 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) [2021-11-07 00:59:46,160 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 119 transitions. [2021-11-07 00:59:46,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 00:59:46,160 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:59:46,160 INFO L513 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] [2021-11-07 00:59:46,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-07 00:59:46,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:59:46,374 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-07 00:59:46,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:59:46,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1512429801, now seen corresponding path program 1 times [2021-11-07 00:59:46,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:59:46,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1001100281] [2021-11-07 00:59:46,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:59:46,375 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:59:46,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:59:46,376 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:59:46,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-07 00:59:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:59:47,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 66 conjunts are in the unsatisfiable core [2021-11-07 00:59:47,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:59:47,192 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 [2021-11-07 00:59:47,339 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-07 00:59:47,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 35 [2021-11-07 00:59:47,639 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-07 00:59:47,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 58 [2021-11-07 00:59:48,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 34 treesize of output 30 [2021-11-07 00:59:48,710 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-07 00:59:48,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 48 [2021-11-07 00:59:48,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:59:48,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 60 [2021-11-07 00:59:48,931 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 [2021-11-07 00:59:50,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:59:50,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-07 00:59:50,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:59:50,410 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 00:59:50,433 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-07 00:59:50,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 115 treesize of output 82 [2021-11-07 00:59:51,059 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 124 treesize of output 116 [2021-11-07 00:59:51,563 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:59:51,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 73 [2021-11-07 00:59:51,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:51,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:01,045 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 74 treesize of output 72 [2021-11-07 01:00:03,121 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_ldv_dev_set_drvdata_~data.base (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (let ((.cse1 (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset))) (let ((.cse0 (store (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~hdev~0.base) .cse1 c_ULTIMATE.start_entry_point_~intf~2.base) (bvadd (_ bv4 32) c_ULTIMATE.start_entry_point_~hdev~0.offset) ULTIMATE.start_ldv_dev_set_drvdata_~data.base))) (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~hdev~0.base .cse0) (select .cse0 .cse1)))) (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv4 32)))))))))))))))) (_ bv1 1)))) is different from false [2021-11-07 01:00:03,149 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:03,150 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-07 01:00:30,630 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_4 (_ BitVec 32)) (ULTIMATE.start_ldv_dev_set_drvdata_~data.base (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse4 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv4 32)))) (select (let ((.cse0 (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~intf~2.base) .cse4))) (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)) v_DerPreprocessor_4)))) (.cse2 (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset))) (let ((.cse1 (store (store (select .cse0 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse2 c_ULTIMATE.start_entry_point_~intf~2.base) (bvadd (_ bv4 32) c_ULTIMATE.start_entry_point_~hdev~0.offset) ULTIMATE.start_ldv_dev_set_drvdata_~data.base))) (select (store .cse0 c_ULTIMATE.start_entry_point_~hdev~0.base .cse1) (select .cse1 .cse2)))) .cse4))))))))))))))))) (_ bv1 1)))) is different from false [2021-11-07 01:00:46,941 WARN L207 SmtUtils]: Spent 16.24 s on a formula simplification. DAG size of input: 46 DAG size of output: 32 [2021-11-07 01:00:46,941 INFO L354 Elim1Store]: treesize reduction 80, result has 39.4 percent of original size [2021-11-07 01:00:46,942 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 8970 treesize of output 5053 [2021-11-07 01:00:47,163 INFO L354 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size [2021-11-07 01:00:47,164 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 5109 treesize of output 4863 [2021-11-07 01:00:51,748 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-07 01:00:53,107 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-07 01:00:53,183 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-07 01:01:33,895 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-07 01:01:34,016 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-07 01:01:34,156 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-07 01:02:42,772 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-07 01:02:42,831 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-07 01:05:04,246 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:05:04,247 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 524 treesize of output 516 [2021-11-07 01:05:05,752 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 25 treesize of output 21 [2021-11-07 01:05:05,839 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 111 treesize of output 107 [2021-11-07 01:05:05,922 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:05:06,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:05:06,160 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 34 treesize of output 26 [2021-11-07 01:05:23,968 WARN L207 SmtUtils]: Spent 10.51 s on a formula simplification. DAG size of input: 120 DAG size of output: 94 [2021-11-07 01:05:41,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:05:41,860 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:05:41,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1001100281] [2021-11-07 01:05:41,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1001100281] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:05:41,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:05:41,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20, 21] imperfect sequences [] total 40 [2021-11-07 01:05:41,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613869012] [2021-11-07 01:05:41,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-07 01:05:41,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:05:41,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-07 01:05:41,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1319, Unknown=18, NotChecked=150, Total=1640 [2021-11-07 01:05:41,863 INFO L87 Difference]: Start difference. First operand 109 states and 119 transitions. Second operand has 41 states, 40 states have (on average 1.675) internal successors, (67), 41 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:02,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:02,010 INFO L93 Difference]: Finished difference Result 153 states and 160 transitions. [2021-11-07 01:06:02,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-07 01:06:02,011 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.675) internal successors, (67), 41 states have internal predecessors, (67), 0 states have call successors, (0), 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 [2021-11-07 01:06:02,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:02,013 INFO L225 Difference]: With dead ends: 153 [2021-11-07 01:06:02,013 INFO L226 Difference]: Without dead ends: 153 [2021-11-07 01:06:02,016 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 86.2s TimeCoverageRelationStatistics Valid=689, Invalid=2723, Unknown=18, NotChecked=230, Total=3660 [2021-11-07 01:06:02,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-07 01:06:02,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 110. [2021-11-07 01:06:02,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 90 states have (on average 1.3444444444444446) internal successors, (121), 109 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:02,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2021-11-07 01:06:02,022 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 34 [2021-11-07 01:06:02,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:02,023 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2021-11-07 01:06:02,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.675) internal successors, (67), 41 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:02,023 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2021-11-07 01:06:02,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 01:06:02,024 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:02,025 INFO L513 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] [2021-11-07 01:06:02,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:02,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:06:02,238 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-07 01:06:02,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:02,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1512429800, now seen corresponding path program 1 times [2021-11-07 01:06:02,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:02,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092114761] [2021-11-07 01:06:02,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:02,240 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:02,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:02,246 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:02,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-07 01:06:03,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:03,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 74 conjunts are in the unsatisfiable core [2021-11-07 01:06:03,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:03,384 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 [2021-11-07 01:06:03,530 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-07 01:06:03,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-07 01:06:03,812 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-07 01:06:03,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-11-07 01:06:03,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2021-11-07 01:06:04,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2021-11-07 01:06:04,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 27 treesize of output 23 [2021-11-07 01:06:04,932 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-07 01:06:04,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 69 [2021-11-07 01:06:04,975 INFO L354 Elim1Store]: treesize reduction 59, result has 13.2 percent of original size [2021-11-07 01:06:04,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 44 [2021-11-07 01:06:05,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:05,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 54 [2021-11-07 01:06:05,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:05,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 85 [2021-11-07 01:06:06,660 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:06:06,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:06,694 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-07 01:06:06,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 108 treesize of output 75 [2021-11-07 01:06:06,701 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:06:06,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:06,749 INFO L354 Elim1Store]: treesize reduction 35, result has 27.1 percent of original size [2021-11-07 01:06:06,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 97 [2021-11-07 01:06:07,829 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-11-07 01:06:07,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 54 [2021-11-07 01:06:07,855 INFO L354 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2021-11-07 01:06:07,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 35 [2021-11-07 01:06:08,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:08,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:21,824 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:21,826 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 322 [2021-11-07 01:06:21,831 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:21,840 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 401 [2021-11-07 01:06:24,068 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (ULTIMATE.start_ldv_dev_set_drvdata_~data.base (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32)) (ULTIMATE.start_ldv_dev_set_drvdata_~data.offset (_ BitVec 32))) (let ((.cse8 (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57.base|) .cse8 v_DerPreprocessor_5))) (.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57.base|) .cse8 v_DerPreprocessor_6))) (.cse6 (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset)) (.cse7 (bvadd (_ bv4 32) c_ULTIMATE.start_entry_point_~hdev~0.offset))) (let ((.cse1 (store (store (select .cse0 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse6 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv8 32))) .cse7 ULTIMATE.start_ldv_dev_set_drvdata_~data.offset)) (.cse5 (store (store (select .cse4 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse6 c_ULTIMATE.start_entry_point_~intf~2.base) .cse7 ULTIMATE.start_ldv_dev_set_drvdata_~data.base))) (let ((.cse2 (select .cse5 .cse6)) (.cse3 (bvadd (_ bv4294967292 32) (select .cse1 .cse6)))) (bvule (bvadd (select (select (store .cse0 c_ULTIMATE.start_entry_point_~hdev~0.base .cse1) .cse2) .cse3) (_ bv8 32)) (select |c_#length| (select (select (store .cse4 c_ULTIMATE.start_entry_point_~hdev~0.base .cse5) .cse2) .cse3)))))))) (forall ((v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32)) (v_prenex_2 (_ BitVec 32)) (v_prenex_1 (_ BitVec 32))) (let ((.cse9 (let ((.cse12 (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)))) (let ((.cse10 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57.base|) .cse12 v_DerPreprocessor_6))) (.cse13 (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset)) (.cse14 (bvadd (_ bv4 32) c_ULTIMATE.start_entry_point_~hdev~0.offset))) (let ((.cse11 (store (store (select .cse10 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse13 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv8 32))) .cse14 v_prenex_2))) (select (select (store .cse10 c_ULTIMATE.start_entry_point_~hdev~0.base .cse11) (select (store (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57.base|) .cse12 v_DerPreprocessor_5)) c_ULTIMATE.start_entry_point_~hdev~0.base) .cse13 c_ULTIMATE.start_entry_point_~intf~2.base) .cse14 v_prenex_1) .cse13)) (bvadd (_ bv4294967292 32) (select .cse11 .cse13)))))))) (bvule (bvadd .cse9 (_ bv7 32)) (bvadd (_ bv8 32) .cse9))))) is different from false [2021-11-07 01:06:26,209 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (ULTIMATE.start_ldv_dev_set_drvdata_~data.base (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32)) (ULTIMATE.start_ldv_dev_set_drvdata_~data.offset (_ BitVec 32))) (let ((.cse8 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~intf~2.base) (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv4 32)))) (.cse9 (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| .cse8 (store (select |c_#memory_$Pointer$.base| .cse8) .cse9 v_DerPreprocessor_5))) (.cse0 (store |c_#memory_$Pointer$.offset| .cse8 (store (select |c_#memory_$Pointer$.offset| .cse8) .cse9 v_DerPreprocessor_6))) (.cse6 (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset)) (.cse7 (bvadd (_ bv4 32) c_ULTIMATE.start_entry_point_~hdev~0.offset))) (let ((.cse1 (store (store (select .cse0 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse6 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv8 32))) .cse7 ULTIMATE.start_ldv_dev_set_drvdata_~data.offset)) (.cse5 (store (store (select .cse4 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse6 c_ULTIMATE.start_entry_point_~intf~2.base) .cse7 ULTIMATE.start_ldv_dev_set_drvdata_~data.base))) (let ((.cse2 (select .cse5 .cse6)) (.cse3 (bvadd (select .cse1 .cse6) (_ bv4294967292 32)))) (bvule (bvadd (_ bv8 32) (select (select (store .cse0 c_ULTIMATE.start_entry_point_~hdev~0.base .cse1) .cse2) .cse3)) (select |c_#length| (select (select (store .cse4 c_ULTIMATE.start_entry_point_~hdev~0.base .cse5) .cse2) .cse3)))))))) (forall ((v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32)) (v_prenex_2 (_ BitVec 32)) (v_prenex_1 (_ BitVec 32))) (let ((.cse10 (let ((.cse13 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~intf~2.base) (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv4 32)))) (.cse14 (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)))) (let ((.cse11 (store |c_#memory_$Pointer$.offset| .cse13 (store (select |c_#memory_$Pointer$.offset| .cse13) .cse14 v_DerPreprocessor_6))) (.cse15 (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset)) (.cse16 (bvadd (_ bv4 32) c_ULTIMATE.start_entry_point_~hdev~0.offset))) (let ((.cse12 (store (store (select .cse11 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse15 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv8 32))) .cse16 v_prenex_2))) (select (select (store .cse11 c_ULTIMATE.start_entry_point_~hdev~0.base .cse12) (select (store (store (select (store |c_#memory_$Pointer$.base| .cse13 (store (select |c_#memory_$Pointer$.base| .cse13) .cse14 v_DerPreprocessor_5)) c_ULTIMATE.start_entry_point_~hdev~0.base) .cse15 c_ULTIMATE.start_entry_point_~intf~2.base) .cse16 v_prenex_1) .cse15)) (bvadd (_ bv4294967292 32) (select .cse12 .cse15)))))))) (bvule (bvadd .cse10 (_ bv7 32)) (bvadd .cse10 (_ bv8 32)))))) is different from false [2021-11-07 01:06:35,377 WARN L207 SmtUtils]: Spent 8.74 s on a formula simplification. DAG size of input: 70 DAG size of output: 45 [2021-11-07 01:06:35,377 INFO L354 Elim1Store]: treesize reduction 377, result has 24.6 percent of original size [2021-11-07 01:06:35,378 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 25530 treesize of output 19576 [2021-11-07 01:06:51,919 WARN L207 SmtUtils]: Spent 16.47 s on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2021-11-07 01:06:51,920 INFO L354 Elim1Store]: treesize reduction 204, result has 30.1 percent of original size [2021-11-07 01:06:51,920 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 340222 treesize of output 208489 [2021-11-07 01:06:52,700 INFO L354 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size [2021-11-07 01:06:52,701 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 210033 treesize of output 201351 [2021-11-07 01:06:53,357 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:53,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 201343 treesize of output 192671 [2021-11-07 01:06:53,808 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:53,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2092114761] [2021-11-07 01:06:53,809 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-07 01:06:53,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1902339694] [2021-11-07 01:06:53,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:53,809 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:06:53,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:06:53,817 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:06:53,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f8923c-97b9-4a62-af49-302a12a4c38e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2021-11-07 01:06:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:55,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 69 conjunts are in the unsatisfiable core [2021-11-07 01:06:55,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:55,101 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 [2021-11-07 01:06:55,165 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-07 01:06:55,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-07 01:06:55,297 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 [2021-11-07 01:06:55,355 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-07 01:06:55,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 01:06:55,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2021-11-07 01:06:55,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 27 treesize of output 23 [2021-11-07 01:06:55,798 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-07 01:06:55,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 69 [2021-11-07 01:06:55,831 INFO L354 Elim1Store]: treesize reduction 59, result has 13.2 percent of original size [2021-11-07 01:06:55,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 44 [2021-11-07 01:06:55,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:55,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 54 [2021-11-07 01:06:55,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:55,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 85 [2021-11-07 01:06:56,877 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:06:56,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:56,913 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-07 01:06:56,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 108 treesize of output 75 [2021-11-07 01:06:56,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:06:56,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:56,942 INFO L354 Elim1Store]: treesize reduction 35, result has 27.1 percent of original size [2021-11-07 01:06:56,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 97 [2021-11-07 01:06:57,379 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-11-07 01:06:57,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 54 [2021-11-07 01:06:57,398 INFO L354 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2021-11-07 01:06:57,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 35 [2021-11-07 01:06:57,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:57,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:57,936 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:57,938 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 322 [2021-11-07 01:06:57,941 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:57,945 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 401