./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/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_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a9d4bfafe2ee2b10c7451875462462bdbc63aaee25e1868c3faa4756fb5ebfc5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:11:20,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:11:20,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:11:20,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:11:20,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:11:20,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:11:20,798 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:11:20,800 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:11:20,802 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:11:20,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:11:20,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:11:20,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:11:20,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:11:20,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:11:20,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:11:20,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:11:20,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:11:20,813 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:11:20,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:11:20,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:11:20,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:11:20,822 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:11:20,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:11:20,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:11:20,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:11:20,829 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:11:20,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:11:20,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:11:20,832 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:11:20,833 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:11:20,833 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:11:20,834 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:11:20,835 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:11:20,837 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:11:20,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:11:20,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:11:20,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:11:20,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:11:20,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:11:20,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:11:20,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:11:20,844 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:11:20,872 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:11:20,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:11:20,874 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:11:20,874 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:11:20,874 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:11:20,875 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:11:20,875 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:11:20,875 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:11:20,875 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:11:20,876 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:11:20,876 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:11:20,876 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:11:20,876 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:11:20,876 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:11:20,877 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:11:20,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:11:20,878 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:11:20,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:11:20,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:11:20,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:11:20,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:11:20,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:11:20,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:11:20,879 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:11:20,879 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:11:20,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:11:20,879 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:11:20,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:11:20,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:11:20,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:11:20,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:11:20,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:11:20,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:11:20,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:11:20,881 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:11:20,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:11:20,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:11:20,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:11:20,882 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:11:20,882 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_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9d4bfafe2ee2b10c7451875462462bdbc63aaee25e1868c3faa4756fb5ebfc5 [2021-11-07 01:11:21,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:11:21,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:11:21,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:11:21,222 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:11:21,223 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:11:21,224 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c [2021-11-07 01:11:21,297 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/data/187698238/476eebc2384d455e8df46173186cad33/FLAG442db01c7 [2021-11-07 01:11:22,016 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:11:22,018 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c [2021-11-07 01:11:22,056 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/data/187698238/476eebc2384d455e8df46173186cad33/FLAG442db01c7 [2021-11-07 01:11:22,159 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/data/187698238/476eebc2384d455e8df46173186cad33 [2021-11-07 01:11:22,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:11:22,163 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:11:22,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:11:22,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:11:22,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:11:22,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:11:22" (1/1) ... [2021-11-07 01:11:22,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1689047f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:22, skipping insertion in model container [2021-11-07 01:11:22,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:11:22" (1/1) ... [2021-11-07 01:11:22,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:11:22,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:11:22,573 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c[17414,17427] [2021-11-07 01:11:22,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:11:22,909 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 01:11:22,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@20378628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:22, skipping insertion in model container [2021-11-07 01:11:22,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:11:22,910 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:11:22,912 INFO L168 Benchmark]: Toolchain (without parser) took 748.07 ms. Allocated memory is still 96.5 MB. Free memory was 52.7 MB in the beginning and 58.5 MB in the end (delta: -5.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:11:22,913 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 96.5 MB. Free memory is still 71.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:11:22,914 INFO L168 Benchmark]: CACSL2BoogieTranslator took 725.40 ms. Allocated memory is still 96.5 MB. Free memory was 74.5 MB in the beginning and 58.5 MB in the end (delta: 16.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:11:22,916 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 96.5 MB. Free memory is still 71.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 725.40 ms. Allocated memory is still 96.5 MB. Free memory was 74.5 MB in the beginning and 58.5 MB in the end (delta: 16.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2314]: 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_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/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_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a9d4bfafe2ee2b10c7451875462462bdbc63aaee25e1868c3faa4756fb5ebfc5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:11:25,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:11:25,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:11:25,429 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:11:25,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:11:25,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:11:25,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:11:25,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:11:25,439 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:11:25,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:11:25,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:11:25,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:11:25,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:11:25,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:11:25,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:11:25,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:11:25,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:11:25,453 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:11:25,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:11:25,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:11:25,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:11:25,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:11:25,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:11:25,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:11:25,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:11:25,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:11:25,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:11:25,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:11:25,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:11:25,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:11:25,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:11:25,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:11:25,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:11:25,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:11:25,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:11:25,499 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:11:25,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:11:25,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:11:25,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:11:25,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:11:25,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:11:25,523 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:11:25,582 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:11:25,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:11:25,586 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:11:25,587 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:11:25,587 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:11:25,587 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:11:25,587 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:11:25,587 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:11:25,588 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:11:25,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:11:25,591 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:11:25,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:11:25,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:11:25,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:11:25,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:11:25,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:11:25,592 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:11:25,592 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:11:25,593 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:11:25,593 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:11:25,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:11:25,593 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:11:25,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:11:25,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:11:25,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:11:25,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:11:25,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:11:25,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:11:25,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:11:25,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:11:25,596 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:11:25,596 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:11:25,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:11:25,596 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:11:25,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:11:25,597 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_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9d4bfafe2ee2b10c7451875462462bdbc63aaee25e1868c3faa4756fb5ebfc5 [2021-11-07 01:11:26,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:11:26,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:11:26,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:11:26,039 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:11:26,040 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:11:26,041 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c [2021-11-07 01:11:26,105 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/data/49a393f88/a772be4b59d241ef9370388c3297eeed/FLAGb6b58f95c [2021-11-07 01:11:26,779 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:11:26,790 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c [2021-11-07 01:11:26,818 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/data/49a393f88/a772be4b59d241ef9370388c3297eeed/FLAGb6b58f95c [2021-11-07 01:11:26,989 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/data/49a393f88/a772be4b59d241ef9370388c3297eeed [2021-11-07 01:11:26,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:11:26,993 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:11:26,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:11:26,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:11:27,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:11:27,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:11:26" (1/1) ... [2021-11-07 01:11:27,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24afe26d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:27, skipping insertion in model container [2021-11-07 01:11:27,015 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:11:26" (1/1) ... [2021-11-07 01:11:27,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:11:27,087 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:11:27,406 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c[17414,17427] [2021-11-07 01:11:27,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:11:27,745 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:11:27,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:11:27,824 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c[17414,17427] [2021-11-07 01:11:27,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:11:27,976 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:11:28,026 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c[17414,17427] [2021-11-07 01:11:28,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:11:28,181 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:11:28,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:28 WrapperNode [2021-11-07 01:11:28,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:11:28,183 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:11:28,183 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:11:28,183 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:11:28,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:28" (1/1) ... [2021-11-07 01:11:28,257 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:28" (1/1) ... [2021-11-07 01:11:28,542 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:11:28,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:11:28,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:11:28,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:11:28,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:28" (1/1) ... [2021-11-07 01:11:28,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:28" (1/1) ... [2021-11-07 01:11:28,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:28" (1/1) ... [2021-11-07 01:11:28,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:28" (1/1) ... [2021-11-07 01:11:28,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:28" (1/1) ... [2021-11-07 01:11:29,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:28" (1/1) ... [2021-11-07 01:11:29,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:28" (1/1) ... [2021-11-07 01:11:29,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:11:29,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:11:29,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:11:29,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:11:29,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:28" (1/1) ... [2021-11-07 01:11:29,088 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:11:29,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:11:29,114 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:11:29,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:11:29,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:11:29,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:11:29,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:11:29,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:11:41,188 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:11:41,188 INFO L299 CfgBuilder]: Removed 821 assume(true) statements. [2021-11-07 01:11:41,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:11:41 BoogieIcfgContainer [2021-11-07 01:11:41,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:11:41,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:11:41,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:11:41,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:11:41,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:11:26" (1/3) ... [2021-11-07 01:11:41,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418edeed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:11:41, skipping insertion in model container [2021-11-07 01:11:41,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:28" (2/3) ... [2021-11-07 01:11:41,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418edeed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:11:41, skipping insertion in model container [2021-11-07 01:11:41,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:11:41" (3/3) ... [2021-11-07 01:11:41,203 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product29.cil.c [2021-11-07 01:11:41,208 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:11:41,209 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-07 01:11:41,277 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:11:41,284 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 01:11:41,284 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 01:11:41,371 INFO L276 IsEmpty]: Start isEmpty. Operand has 3566 states, 3560 states have (on average 1.8918539325842696) internal successors, (6735), 3565 states have internal predecessors, (6735), 0 states have call successors, (0), 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 01:11:41,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 01:11:41,401 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:11:41,401 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:11:41,402 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:11:41,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:11:41,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1331750797, now seen corresponding path program 1 times [2021-11-07 01:11:41,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:11:41,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1726865563] [2021-11-07 01:11:41,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:11:41,430 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:11:41,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:11:41,434 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:11:41,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:11:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:11:41,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:11:41,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:11:42,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:11:42,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:11:42,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:11:42,201 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:11:42,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1726865563] [2021-11-07 01:11:42,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1726865563] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:11:42,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:11:42,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:11:42,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530378675] [2021-11-07 01:11:42,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:11:42,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:11:42,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:11:42,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:11:42,241 INFO L87 Difference]: Start difference. First operand has 3566 states, 3560 states have (on average 1.8918539325842696) internal successors, (6735), 3565 states have internal predecessors, (6735), 0 states have call successors, (0), 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 2 states, 2 states have (on average 21.5) internal successors, (43), 2 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 01:11:42,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:11:42,401 INFO L93 Difference]: Finished difference Result 3585 states and 6758 transitions. [2021-11-07 01:11:42,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:11:42,403 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 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 43 [2021-11-07 01:11:42,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:11:42,462 INFO L225 Difference]: With dead ends: 3585 [2021-11-07 01:11:42,462 INFO L226 Difference]: Without dead ends: 3562 [2021-11-07 01:11:42,470 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:11:42,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3562 states. [2021-11-07 01:11:42,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3562 to 3562. [2021-11-07 01:11:42,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3557 states have (on average 1.8900759066629182) internal successors, (6723), 3561 states have internal predecessors, (6723), 0 states have call successors, (0), 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 01:11:42,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 6723 transitions. [2021-11-07 01:11:42,666 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 6723 transitions. Word has length 43 [2021-11-07 01:11:42,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:11:42,667 INFO L470 AbstractCegarLoop]: Abstraction has 3562 states and 6723 transitions. [2021-11-07 01:11:42,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 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 01:11:42,668 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 6723 transitions. [2021-11-07 01:11:42,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 01:11:42,672 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:11:42,673 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:11:42,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:11:42,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:11:42,888 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:11:42,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:11:42,889 INFO L85 PathProgramCache]: Analyzing trace with hash -347248708, now seen corresponding path program 1 times [2021-11-07 01:11:42,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:11:42,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1195051852] [2021-11-07 01:11:42,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:11:42,891 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:11:42,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:11:42,892 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:11:42,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:11:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:11:43,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:11:43,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:11:43,443 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 01:11:43,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:11:43,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:11:43,584 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:11:43,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1195051852] [2021-11-07 01:11:43,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1195051852] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:11:43,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:11:43,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:11:43,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146985598] [2021-11-07 01:11:43,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:11:43,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:11:43,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:11:43,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:11:43,593 INFO L87 Difference]: Start difference. First operand 3562 states and 6723 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 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 01:11:43,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:11:43,863 INFO L93 Difference]: Finished difference Result 7111 states and 13427 transitions. [2021-11-07 01:11:43,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:11:43,863 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 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 45 [2021-11-07 01:11:43,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:11:43,889 INFO L225 Difference]: With dead ends: 7111 [2021-11-07 01:11:43,890 INFO L226 Difference]: Without dead ends: 3562 [2021-11-07 01:11:43,901 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:11:43,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3562 states. [2021-11-07 01:11:44,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3562 to 3562. [2021-11-07 01:11:44,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3557 states have (on average 1.8883890919314028) internal successors, (6717), 3561 states have internal predecessors, (6717), 0 states have call successors, (0), 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 01:11:44,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 6717 transitions. [2021-11-07 01:11:44,045 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 6717 transitions. Word has length 45 [2021-11-07 01:11:44,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:11:44,046 INFO L470 AbstractCegarLoop]: Abstraction has 3562 states and 6717 transitions. [2021-11-07 01:11:44,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 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 01:11:44,047 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 6717 transitions. [2021-11-07 01:11:44,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 01:11:44,054 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:11:44,060 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:11:44,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:11:44,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:11:44,284 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:11:44,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:11:44,285 INFO L85 PathProgramCache]: Analyzing trace with hash -2097814926, now seen corresponding path program 1 times [2021-11-07 01:11:44,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:11:44,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1922796510] [2021-11-07 01:11:44,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:11:44,286 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:11:44,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:11:44,288 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:11:44,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:11:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:11:44,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:11:44,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:11:44,868 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 01:11:44,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:11:45,081 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 01:11:45,081 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:11:45,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1922796510] [2021-11-07 01:11:45,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1922796510] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:11:45,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:11:45,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:11:45,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326991463] [2021-11-07 01:11:45,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:11:45,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:11:45,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:11:45,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:11:45,090 INFO L87 Difference]: Start difference. First operand 3562 states and 6717 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 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 01:11:45,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:11:45,390 INFO L93 Difference]: Finished difference Result 7075 states and 13350 transitions. [2021-11-07 01:11:45,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:11:45,391 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 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 50 [2021-11-07 01:11:45,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:11:45,414 INFO L225 Difference]: With dead ends: 7075 [2021-11-07 01:11:45,414 INFO L226 Difference]: Without dead ends: 3535 [2021-11-07 01:11:45,422 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:11:45,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2021-11-07 01:11:45,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 3535. [2021-11-07 01:11:45,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3535 states, 3530 states have (on average 1.886968838526912) internal successors, (6661), 3534 states have internal predecessors, (6661), 0 states have call successors, (0), 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 01:11:45,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 6661 transitions. [2021-11-07 01:11:45,572 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 6661 transitions. Word has length 50 [2021-11-07 01:11:45,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:11:45,573 INFO L470 AbstractCegarLoop]: Abstraction has 3535 states and 6661 transitions. [2021-11-07 01:11:45,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 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 01:11:45,574 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 6661 transitions. [2021-11-07 01:11:45,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 01:11:45,578 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:11:45,578 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:11:45,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:11:45,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:11:45,794 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:11:45,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:11:45,794 INFO L85 PathProgramCache]: Analyzing trace with hash 524523664, now seen corresponding path program 1 times [2021-11-07 01:11:45,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:11:45,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [548736374] [2021-11-07 01:11:45,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:11:45,795 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:11:45,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:11:45,799 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:11:45,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:11:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:11:46,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:11:46,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:11:46,356 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 01:11:46,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:11:46,484 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 01:11:46,485 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:11:46,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [548736374] [2021-11-07 01:11:46,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [548736374] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:11:46,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:11:46,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:11:46,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817872874] [2021-11-07 01:11:46,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:11:46,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:11:46,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:11:46,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:11:46,488 INFO L87 Difference]: Start difference. First operand 3535 states and 6661 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 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 01:11:46,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:11:46,720 INFO L93 Difference]: Finished difference Result 7048 states and 13294 transitions. [2021-11-07 01:11:46,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:11:46,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 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 51 [2021-11-07 01:11:46,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:11:46,743 INFO L225 Difference]: With dead ends: 7048 [2021-11-07 01:11:46,743 INFO L226 Difference]: Without dead ends: 3535 [2021-11-07 01:11:46,748 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:11:46,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2021-11-07 01:11:46,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 3535. [2021-11-07 01:11:46,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3535 states, 3530 states have (on average 1.885269121813031) internal successors, (6655), 3534 states have internal predecessors, (6655), 0 states have call successors, (0), 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 01:11:46,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 6655 transitions. [2021-11-07 01:11:46,985 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 6655 transitions. Word has length 51 [2021-11-07 01:11:46,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:11:46,987 INFO L470 AbstractCegarLoop]: Abstraction has 3535 states and 6655 transitions. [2021-11-07 01:11:46,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 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 01:11:46,988 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 6655 transitions. [2021-11-07 01:11:46,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 01:11:46,992 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:11:46,992 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, 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 01:11:47,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:11:47,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:11:47,209 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:11:47,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:11:47,209 INFO L85 PathProgramCache]: Analyzing trace with hash 259811167, now seen corresponding path program 1 times [2021-11-07 01:11:47,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:11:47,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1507026541] [2021-11-07 01:11:47,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:11:47,212 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:11:47,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:11:47,213 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:11:47,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:11:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:11:47,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:11:47,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:11:47,831 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 01:11:47,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:11:48,002 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 01:11:48,002 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:11:48,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1507026541] [2021-11-07 01:11:48,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1507026541] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:11:48,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:11:48,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:11:48,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929141513] [2021-11-07 01:11:48,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:11:48,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:11:48,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:11:48,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:11:48,005 INFO L87 Difference]: Start difference. First operand 3535 states and 6655 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 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 01:11:48,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:11:48,257 INFO L93 Difference]: Finished difference Result 7042 states and 13277 transitions. [2021-11-07 01:11:48,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:11:48,257 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 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 56 [2021-11-07 01:11:48,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:11:48,280 INFO L225 Difference]: With dead ends: 7042 [2021-11-07 01:11:48,280 INFO L226 Difference]: Without dead ends: 3532 [2021-11-07 01:11:48,287 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:11:48,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3532 states. [2021-11-07 01:11:48,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3532 to 3532. [2021-11-07 01:11:48,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3532 states, 3527 states have (on average 1.884604479727814) internal successors, (6647), 3531 states have internal predecessors, (6647), 0 states have call successors, (0), 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 01:11:48,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3532 states to 3532 states and 6647 transitions. [2021-11-07 01:11:48,450 INFO L78 Accepts]: Start accepts. Automaton has 3532 states and 6647 transitions. Word has length 56 [2021-11-07 01:11:48,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:11:48,450 INFO L470 AbstractCegarLoop]: Abstraction has 3532 states and 6647 transitions. [2021-11-07 01:11:48,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 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 01:11:48,451 INFO L276 IsEmpty]: Start isEmpty. Operand 3532 states and 6647 transitions. [2021-11-07 01:11:48,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 01:11:48,455 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:11:48,456 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, 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 01:11:48,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:11:48,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:11:48,673 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:11:48,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:11:48,673 INFO L85 PathProgramCache]: Analyzing trace with hash -2078046321, now seen corresponding path program 1 times [2021-11-07 01:11:48,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:11:48,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926927998] [2021-11-07 01:11:48,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:11:48,675 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:11:48,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:11:48,676 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:11:48,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:11:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:11:49,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:11:49,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:11:49,538 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 01:11:49,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:11:50,577 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 01:11:50,577 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:11:50,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926927998] [2021-11-07 01:11:50,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926927998] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:11:50,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:11:50,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:11:50,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234619681] [2021-11-07 01:11:50,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:11:50,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:11:50,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:11:50,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:11:50,580 INFO L87 Difference]: Start difference. First operand 3532 states and 6647 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 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 01:11:53,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:11:53,656 INFO L93 Difference]: Finished difference Result 11275 states and 21281 transitions. [2021-11-07 01:11:53,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:11:53,661 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-07 01:11:53,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:11:53,718 INFO L225 Difference]: With dead ends: 11275 [2021-11-07 01:11:53,718 INFO L226 Difference]: Without dead ends: 7785 [2021-11-07 01:11:53,726 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:11:53,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7785 states. [2021-11-07 01:11:54,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7785 to 5020. [2021-11-07 01:11:54,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5020 states, 5015 states have (on average 1.8861415752741775) internal successors, (9459), 5019 states have internal predecessors, (9459), 0 states have call successors, (0), 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 01:11:54,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5020 states to 5020 states and 9459 transitions. [2021-11-07 01:11:54,036 INFO L78 Accepts]: Start accepts. Automaton has 5020 states and 9459 transitions. Word has length 57 [2021-11-07 01:11:54,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:11:54,038 INFO L470 AbstractCegarLoop]: Abstraction has 5020 states and 9459 transitions. [2021-11-07 01:11:54,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 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 01:11:54,038 INFO L276 IsEmpty]: Start isEmpty. Operand 5020 states and 9459 transitions. [2021-11-07 01:11:54,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-07 01:11:54,042 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:11:54,042 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, 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 01:11:54,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:11:54,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:11:54,260 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:11:54,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:11:54,260 INFO L85 PathProgramCache]: Analyzing trace with hash -20734541, now seen corresponding path program 1 times [2021-11-07 01:11:54,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:11:54,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997751214] [2021-11-07 01:11:54,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:11:54,261 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:11:54,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:11:54,268 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:11:54,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:11:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:11:54,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:11:54,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:11:54,954 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 01:11:54,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:11:55,149 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 01:11:55,149 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:11:55,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [997751214] [2021-11-07 01:11:55,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [997751214] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:11:55,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:11:55,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:11:55,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038680994] [2021-11-07 01:11:55,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:11:55,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:11:55,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:11:55,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:11:55,151 INFO L87 Difference]: Start difference. First operand 5020 states and 9459 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 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 01:11:59,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:11:59,475 INFO L93 Difference]: Finished difference Result 21408 states and 40193 transitions. [2021-11-07 01:11:59,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:11:59,476 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-11-07 01:11:59,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:11:59,525 INFO L225 Difference]: With dead ends: 21408 [2021-11-07 01:11:59,525 INFO L226 Difference]: Without dead ends: 16429 [2021-11-07 01:11:59,538 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 111 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 01:11:59,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16429 states. [2021-11-07 01:11:59,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16429 to 5026. [2021-11-07 01:11:59,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5026 states, 5021 states have (on average 1.8850826528579965) internal successors, (9465), 5025 states have internal predecessors, (9465), 0 states have call successors, (0), 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 01:11:59,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5026 states to 5026 states and 9465 transitions. [2021-11-07 01:11:59,952 INFO L78 Accepts]: Start accepts. Automaton has 5026 states and 9465 transitions. Word has length 58 [2021-11-07 01:11:59,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:11:59,953 INFO L470 AbstractCegarLoop]: Abstraction has 5026 states and 9465 transitions. [2021-11-07 01:11:59,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 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 01:11:59,953 INFO L276 IsEmpty]: Start isEmpty. Operand 5026 states and 9465 transitions. [2021-11-07 01:11:59,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 01:11:59,957 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:11:59,957 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, 1, 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 01:11:59,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:12:00,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:12:00,171 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:12:00,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:12:00,172 INFO L85 PathProgramCache]: Analyzing trace with hash 558951885, now seen corresponding path program 1 times [2021-11-07 01:12:00,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:12:00,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [252622146] [2021-11-07 01:12:00,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:00,173 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:12:00,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:12:00,173 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:12:00,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:12:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:00,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:12:00,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:00,761 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 01:12:00,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:00,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:12:00,924 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:12:00,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [252622146] [2021-11-07 01:12:00,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [252622146] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:12:00,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:12:00,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:12:00,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854528103] [2021-11-07 01:12:00,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:12:00,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:12:00,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:12:00,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:12:00,927 INFO L87 Difference]: Start difference. First operand 5026 states and 9465 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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 01:12:12,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:12:12,543 INFO L93 Difference]: Finished difference Result 17286 states and 32516 transitions. [2021-11-07 01:12:12,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:12:12,543 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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 59 [2021-11-07 01:12:12,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:12:12,583 INFO L225 Difference]: With dead ends: 17286 [2021-11-07 01:12:12,583 INFO L226 Difference]: Without dead ends: 13884 [2021-11-07 01:12:12,591 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:12:12,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13884 states. [2021-11-07 01:12:13,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13884 to 8696. [2021-11-07 01:12:13,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8696 states, 8691 states have (on average 1.8814865953285007) internal successors, (16352), 8695 states have internal predecessors, (16352), 0 states have call successors, (0), 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 01:12:13,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8696 states to 8696 states and 16352 transitions. [2021-11-07 01:12:13,065 INFO L78 Accepts]: Start accepts. Automaton has 8696 states and 16352 transitions. Word has length 59 [2021-11-07 01:12:13,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:12:13,065 INFO L470 AbstractCegarLoop]: Abstraction has 8696 states and 16352 transitions. [2021-11-07 01:12:13,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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 01:12:13,066 INFO L276 IsEmpty]: Start isEmpty. Operand 8696 states and 16352 transitions. [2021-11-07 01:12:13,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 01:12:13,071 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:12:13,072 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, 1, 1, 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 01:12:13,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:12:13,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:12:13,288 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:12:13,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:12:13,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1457908388, now seen corresponding path program 1 times [2021-11-07 01:12:13,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:12:13,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291054032] [2021-11-07 01:12:13,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:13,290 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:12:13,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:12:13,291 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:12:13,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:12:13,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:13,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:12:13,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:13,914 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 01:12:13,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:14,095 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 01:12:14,095 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:12:14,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1291054032] [2021-11-07 01:12:14,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1291054032] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:12:14,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:12:14,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:12:14,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482368923] [2021-11-07 01:12:14,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:12:14,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:12:14,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:12:14,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:12:14,098 INFO L87 Difference]: Start difference. First operand 8696 states and 16352 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 01:12:17,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:12:17,635 INFO L93 Difference]: Finished difference Result 20786 states and 38875 transitions. [2021-11-07 01:12:17,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:12:17,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-07 01:12:17,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:12:17,676 INFO L225 Difference]: With dead ends: 20786 [2021-11-07 01:12:17,676 INFO L226 Difference]: Without dead ends: 13688 [2021-11-07 01:12:17,688 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 116 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 01:12:17,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13688 states. [2021-11-07 01:12:18,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13688 to 8673. [2021-11-07 01:12:18,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8673 states, 8668 states have (on average 1.8493308721735118) internal successors, (16030), 8672 states have internal predecessors, (16030), 0 states have call successors, (0), 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 01:12:18,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8673 states to 8673 states and 16030 transitions. [2021-11-07 01:12:18,205 INFO L78 Accepts]: Start accepts. Automaton has 8673 states and 16030 transitions. Word has length 60 [2021-11-07 01:12:18,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:12:18,206 INFO L470 AbstractCegarLoop]: Abstraction has 8673 states and 16030 transitions. [2021-11-07 01:12:18,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 01:12:18,206 INFO L276 IsEmpty]: Start isEmpty. Operand 8673 states and 16030 transitions. [2021-11-07 01:12:18,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 01:12:18,209 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:12:18,209 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, 1, 1, 1, 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 01:12:18,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:12:18,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:12:18,426 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:12:18,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:12:18,426 INFO L85 PathProgramCache]: Analyzing trace with hash 239068773, now seen corresponding path program 1 times [2021-11-07 01:12:18,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:12:18,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [754142676] [2021-11-07 01:12:18,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:18,428 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:12:18,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:12:18,429 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:12:18,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:12:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:18,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:12:18,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:19,124 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 01:12:19,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:19,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:12:19,289 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:12:19,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [754142676] [2021-11-07 01:12:19,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [754142676] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:12:19,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:12:19,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:12:19,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935034762] [2021-11-07 01:12:19,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:12:19,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:12:19,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:12:19,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:12:19,291 INFO L87 Difference]: Start difference. First operand 8673 states and 16030 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 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 01:12:21,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:12:21,304 INFO L93 Difference]: Finished difference Result 58848 states and 109209 transitions. [2021-11-07 01:12:21,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:12:21,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 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 61 [2021-11-07 01:12:21,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:12:21,406 INFO L225 Difference]: With dead ends: 58848 [2021-11-07 01:12:21,406 INFO L226 Difference]: Without dead ends: 50212 [2021-11-07 01:12:21,425 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:12:21,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50212 states. [2021-11-07 01:12:22,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50212 to 13574. [2021-11-07 01:12:22,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13574 states, 13569 states have (on average 1.8514260446606234) internal successors, (25122), 13573 states have internal predecessors, (25122), 0 states have call successors, (0), 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 01:12:22,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13574 states to 13574 states and 25122 transitions. [2021-11-07 01:12:22,399 INFO L78 Accepts]: Start accepts. Automaton has 13574 states and 25122 transitions. Word has length 61 [2021-11-07 01:12:22,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:12:22,399 INFO L470 AbstractCegarLoop]: Abstraction has 13574 states and 25122 transitions. [2021-11-07 01:12:22,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 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 01:12:22,400 INFO L276 IsEmpty]: Start isEmpty. Operand 13574 states and 25122 transitions. [2021-11-07 01:12:22,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 01:12:22,403 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:12:22,403 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, 1, 1, 1, 1, 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 01:12:22,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:12:22,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:12:22,621 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:12:22,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:12:22,622 INFO L85 PathProgramCache]: Analyzing trace with hash -479492460, now seen corresponding path program 1 times [2021-11-07 01:12:22,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:12:22,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1460369238] [2021-11-07 01:12:22,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:22,623 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:12:22,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:12:22,624 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:12:22,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:12:23,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:23,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:12:23,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:23,352 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 01:12:23,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:23,524 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 01:12:23,524 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:12:23,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1460369238] [2021-11-07 01:12:23,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1460369238] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:12:23,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:12:23,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:12:23,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320853425] [2021-11-07 01:12:23,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:12:23,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:12:23,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:12:23,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:12:23,526 INFO L87 Difference]: Start difference. First operand 13574 states and 25122 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 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 01:12:24,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:12:24,658 INFO L93 Difference]: Finished difference Result 34971 states and 64777 transitions. [2021-11-07 01:12:24,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:12:24,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-07 01:12:24,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:12:24,706 INFO L225 Difference]: With dead ends: 34971 [2021-11-07 01:12:24,706 INFO L226 Difference]: Without dead ends: 23280 [2021-11-07 01:12:24,724 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:12:24,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23280 states. [2021-11-07 01:12:25,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23280 to 23265. [2021-11-07 01:12:25,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23265 states, 23260 states have (on average 1.852407566638005) internal successors, (43087), 23264 states have internal predecessors, (43087), 0 states have call successors, (0), 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 01:12:25,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23265 states to 23265 states and 43087 transitions. [2021-11-07 01:12:25,798 INFO L78 Accepts]: Start accepts. Automaton has 23265 states and 43087 transitions. Word has length 62 [2021-11-07 01:12:25,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:12:25,798 INFO L470 AbstractCegarLoop]: Abstraction has 23265 states and 43087 transitions. [2021-11-07 01:12:25,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 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 01:12:25,798 INFO L276 IsEmpty]: Start isEmpty. Operand 23265 states and 43087 transitions. [2021-11-07 01:12:25,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:12:25,800 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:12:25,801 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, 1, 1, 1, 1, 1, 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 01:12:25,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:12:26,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:12:26,015 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:12:26,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:12:26,015 INFO L85 PathProgramCache]: Analyzing trace with hash 626168652, now seen corresponding path program 1 times [2021-11-07 01:12:26,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:12:26,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418807584] [2021-11-07 01:12:26,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:26,016 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:12:26,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:12:26,017 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:12:26,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:12:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:26,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:12:26,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:26,753 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 01:12:26,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:26,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:12:26,924 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:12:26,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418807584] [2021-11-07 01:12:26,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1418807584] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:12:26,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:12:26,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:12:26,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379467334] [2021-11-07 01:12:26,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:12:26,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:12:26,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:12:26,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:12:26,926 INFO L87 Difference]: Start difference. First operand 23265 states and 43087 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 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 01:12:28,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:12:28,553 INFO L93 Difference]: Finished difference Result 62731 states and 116210 transitions. [2021-11-07 01:12:28,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:12:28,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 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 63 [2021-11-07 01:12:28,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:12:28,624 INFO L225 Difference]: With dead ends: 62731 [2021-11-07 01:12:28,624 INFO L226 Difference]: Without dead ends: 42466 [2021-11-07 01:12:28,648 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:12:28,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42466 states. [2021-11-07 01:12:30,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42466 to 42451. [2021-11-07 01:12:30,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42451 states, 42446 states have (on average 1.8525420534325967) internal successors, (78633), 42450 states have internal predecessors, (78633), 0 states have call successors, (0), 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 01:12:30,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42451 states to 42451 states and 78633 transitions. [2021-11-07 01:12:30,733 INFO L78 Accepts]: Start accepts. Automaton has 42451 states and 78633 transitions. Word has length 63 [2021-11-07 01:12:30,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:12:30,733 INFO L470 AbstractCegarLoop]: Abstraction has 42451 states and 78633 transitions. [2021-11-07 01:12:30,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 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 01:12:30,733 INFO L276 IsEmpty]: Start isEmpty. Operand 42451 states and 78633 transitions. [2021-11-07 01:12:30,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 01:12:30,736 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:12:30,736 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, 1, 1, 1, 1, 1, 1, 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 01:12:30,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-07 01:12:30,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:12:30,951 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:12:30,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:12:30,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1824187431, now seen corresponding path program 1 times [2021-11-07 01:12:30,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:12:30,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [963984633] [2021-11-07 01:12:30,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:30,953 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:12:30,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:12:30,954 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:12:30,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:12:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:31,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:12:31,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:31,720 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 01:12:31,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:31,887 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 01:12:31,888 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:12:31,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [963984633] [2021-11-07 01:12:31,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [963984633] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:12:31,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:12:31,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:12:31,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585666394] [2021-11-07 01:12:31,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:12:31,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:12:31,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:12:31,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:12:31,890 INFO L87 Difference]: Start difference. First operand 42451 states and 78633 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:35,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:12:35,002 INFO L93 Difference]: Finished difference Result 117859 states and 218259 transitions. [2021-11-07 01:12:35,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:12:35,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-07 01:12:35,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:12:35,126 INFO L225 Difference]: With dead ends: 117859 [2021-11-07 01:12:35,126 INFO L226 Difference]: Without dead ends: 80416 [2021-11-07 01:12:35,160 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:12:35,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80416 states. [2021-11-07 01:12:38,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80416 to 80401. [2021-11-07 01:12:38,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80401 states, 80396 states have (on average 1.8515722175232598) internal successors, (148859), 80400 states have internal predecessors, (148859), 0 states have call successors, (0), 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 01:12:38,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80401 states to 80401 states and 148859 transitions. [2021-11-07 01:12:38,931 INFO L78 Accepts]: Start accepts. Automaton has 80401 states and 148859 transitions. Word has length 64 [2021-11-07 01:12:38,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:12:38,931 INFO L470 AbstractCegarLoop]: Abstraction has 80401 states and 148859 transitions. [2021-11-07 01:12:38,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:38,931 INFO L276 IsEmpty]: Start isEmpty. Operand 80401 states and 148859 transitions. [2021-11-07 01:12:38,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 01:12:38,933 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:12:38,933 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, 1, 1, 1, 1, 1, 1, 1, 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 01:12:38,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:12:39,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:12:39,143 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:12:39,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:12:39,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1453040433, now seen corresponding path program 1 times [2021-11-07 01:12:39,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:12:39,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56277998] [2021-11-07 01:12:39,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:39,144 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:12:39,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:12:39,145 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:12:39,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ad4f7ea-0bd3-48a5-9c74-4e3290fca248/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:12:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:39,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:12:39,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:40,156 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 01:12:40,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:40,327 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 01:12:40,327 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:12:40,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56277998] [2021-11-07 01:12:40,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [56277998] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:12:40,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:12:40,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:12:40,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074786610] [2021-11-07 01:12:40,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:12:40,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:12:40,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:12:40,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:12:40,329 INFO L87 Difference]: Start difference. First operand 80401 states and 148859 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 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 01:12:46,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:12:46,205 INFO L93 Difference]: Finished difference Result 227271 states and 420528 transitions. [2021-11-07 01:12:46,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:12:46,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-07 01:12:46,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:12:46,503 INFO L225 Difference]: With dead ends: 227271 [2021-11-07 01:12:46,504 INFO L226 Difference]: Without dead ends: 155442 [2021-11-07 01:12:46,589 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:12:46,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155442 states.