./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw --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 b28893eeb4e8958df7bf6ff738f75538c209345459f7fc3e6dda93763604868d ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw --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 b28893eeb4e8958df7bf6ff738f75538c209345459f7fc3e6dda93763604868d ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 05:43:38,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:43:38,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:43:38,766 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:43:38,767 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:43:38,768 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:43:38,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:43:38,773 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:43:38,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:43:38,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:43:38,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:43:38,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:43:38,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:43:38,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:43:38,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:43:38,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:43:38,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:43:38,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:43:38,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:43:38,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:43:38,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:43:38,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:43:38,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:43:38,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:43:38,811 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:43:38,812 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:43:38,812 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:43:38,813 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:43:38,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:43:38,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:43:38,816 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:43:38,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:43:38,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:43:38,827 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:43:38,828 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:43:38,829 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:43:38,829 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:43:38,830 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:43:38,830 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:43:38,831 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:43:38,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:43:38,833 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-20 05:43:38,880 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:43:38,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:43:38,881 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:43:38,882 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:43:38,882 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:43:38,882 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:43:38,882 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 05:43:38,883 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:43:38,883 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:43:38,883 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 05:43:38,884 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 05:43:38,884 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:43:38,884 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 05:43:38,884 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 05:43:38,885 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 05:43:38,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:43:38,886 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:43:38,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 05:43:38,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:43:38,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:43:38,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 05:43:38,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:43:38,888 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 05:43:38,888 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:43:38,888 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:43:38,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 05:43:38,889 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:43:38,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 05:43:38,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:43:38,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:43:38,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:43:38,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:43:38,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:43:38,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 05:43:38,891 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 05:43:38,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 05:43:38,891 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 05:43:38,892 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:43:38,892 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:43:38,892 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_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b28893eeb4e8958df7bf6ff738f75538c209345459f7fc3e6dda93763604868d [2021-10-20 05:43:39,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:43:39,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:43:39,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:43:39,259 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:43:39,260 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:43:39,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c [2021-10-20 05:43:39,349 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/data/5755a1792/4a1ecec36d9440da970c0e12360d71e6/FLAGbce5445e1 [2021-10-20 05:43:39,942 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:43:39,943 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c [2021-10-20 05:43:39,959 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/data/5755a1792/4a1ecec36d9440da970c0e12360d71e6/FLAGbce5445e1 [2021-10-20 05:43:40,365 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/data/5755a1792/4a1ecec36d9440da970c0e12360d71e6 [2021-10-20 05:43:40,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:43:40,370 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:43:40,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:43:40,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:43:40,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:43:40,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:43:40" (1/1) ... [2021-10-20 05:43:40,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72aab588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:43:40, skipping insertion in model container [2021-10-20 05:43:40,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:43:40" (1/1) ... [2021-10-20 05:43:40,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:43:40,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:43:40,742 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_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c[13010,13023] [2021-10-20 05:43:40,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:43:40,804 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) [2021-10-20 05:43:40,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3f942de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:43:40, skipping insertion in model container [2021-10-20 05:43:40,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:43:40,817 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-20 05:43:40,820 INFO L168 Benchmark]: Toolchain (without parser) took 448.10 ms. Allocated memory is still 130.0 MB. Free memory was 91.6 MB in the beginning and 102.8 MB in the end (delta: -11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 05:43:40,822 INFO L168 Benchmark]: CDTParser took 1.16 ms. Allocated memory is still 130.0 MB. Free memory was 109.9 MB in the beginning and 109.8 MB in the end (delta: 120.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:43:40,825 INFO L168 Benchmark]: CACSL2BoogieTranslator took 444.82 ms. Allocated memory is still 130.0 MB. Free memory was 91.5 MB in the beginning and 102.8 MB in the end (delta: -11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 05:43:40,828 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.16 ms. Allocated memory is still 130.0 MB. Free memory was 109.9 MB in the beginning and 109.8 MB in the end (delta: 120.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 444.82 ms. Allocated memory is still 130.0 MB. Free memory was 91.5 MB in the beginning and 102.8 MB in the end (delta: -11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 211]: 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 05:43:43,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:43:43,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:43:43,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:43:43,516 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:43:43,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:43:43,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:43:43,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:43:43,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:43:43,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:43:43,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:43:43,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:43:43,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:43:43,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:43:43,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:43:43,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:43:43,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:43:43,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:43:43,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:43:43,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:43:43,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:43:43,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:43:43,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:43:43,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:43:43,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:43:43,604 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:43:43,605 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:43:43,607 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:43:43,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:43:43,610 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:43:43,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:43:43,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:43:43,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:43:43,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:43:43,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:43:43,617 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:43:43,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:43:43,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:43:43,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:43:43,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:43:43,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:43:43,629 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-20 05:43:43,688 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:43:43,688 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:43:43,690 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:43:43,691 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:43:43,691 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:43:43,691 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:43:43,691 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:43:43,692 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:43:43,692 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:43:43,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:43:43,695 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:43:43,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:43:43,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:43:43,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 05:43:43,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:43:43,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 05:43:43,697 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:43:43,697 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-20 05:43:43,698 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-20 05:43:43,698 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:43:43,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 05:43:43,699 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:43:43,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 05:43:43,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:43:43,700 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-20 05:43:43,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:43:43,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:43:43,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:43:43,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:43:43,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 05:43:43,701 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-20 05:43:43,702 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-20 05:43:43,702 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 05:43:43,702 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:43:43,703 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:43:43,703 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_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b28893eeb4e8958df7bf6ff738f75538c209345459f7fc3e6dda93763604868d [2021-10-20 05:43:44,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:43:44,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:43:44,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:43:44,231 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:43:44,233 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:43:44,234 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c [2021-10-20 05:43:44,327 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/data/04375c41f/eca654d6e6bd47a0adf5f490839d877d/FLAGe1d1839a9 [2021-10-20 05:43:45,071 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:43:45,072 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c [2021-10-20 05:43:45,101 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/data/04375c41f/eca654d6e6bd47a0adf5f490839d877d/FLAGe1d1839a9 [2021-10-20 05:43:45,332 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/data/04375c41f/eca654d6e6bd47a0adf5f490839d877d [2021-10-20 05:43:45,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:43:45,337 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:43:45,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:43:45,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:43:45,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:43:45,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:43:45" (1/1) ... [2021-10-20 05:43:45,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f74e248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:43:45, skipping insertion in model container [2021-10-20 05:43:45,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:43:45" (1/1) ... [2021-10-20 05:43:45,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:43:45,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:43:45,754 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_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c[13010,13023] [2021-10-20 05:43:45,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:43:45,818 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-20 05:43:45,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:43:45,880 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_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c[13010,13023] [2021-10-20 05:43:45,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:43:45,915 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 05:43:45,970 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_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c[13010,13023] [2021-10-20 05:43:46,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:43:46,048 INFO L208 MainTranslator]: Completed translation [2021-10-20 05:43:46,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:43:46 WrapperNode [2021-10-20 05:43:46,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:43:46,050 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 05:43:46,051 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 05:43:46,051 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 05:43:46,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:43:46" (1/1) ... [2021-10-20 05:43:46,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:43:46" (1/1) ... [2021-10-20 05:43:46,199 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 05:43:46,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 05:43:46,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 05:43:46,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 05:43:46,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:43:46" (1/1) ... [2021-10-20 05:43:46,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:43:46" (1/1) ... [2021-10-20 05:43:46,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:43:46" (1/1) ... [2021-10-20 05:43:46,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:43:46" (1/1) ... [2021-10-20 05:43:46,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:43:46" (1/1) ... [2021-10-20 05:43:46,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:43:46" (1/1) ... [2021-10-20 05:43:46,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:43:46" (1/1) ... [2021-10-20 05:43:46,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 05:43:46,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 05:43:46,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 05:43:46,288 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 05:43:46,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:43:46" (1/1) ... [2021-10-20 05:43:46,313 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:43:46,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:43:46,350 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 05:43:46,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 05:43:46,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 05:43:46,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-20 05:43:46,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 05:43:46,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 05:43:49,154 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 05:43:49,154 INFO L299 CfgBuilder]: Removed 194 assume(true) statements. [2021-10-20 05:43:49,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:43:49 BoogieIcfgContainer [2021-10-20 05:43:49,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 05:43:49,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 05:43:49,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 05:43:49,163 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 05:43:49,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:43:45" (1/3) ... [2021-10-20 05:43:49,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ad59be2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:43:49, skipping insertion in model container [2021-10-20 05:43:49,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:43:46" (2/3) ... [2021-10-20 05:43:49,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ad59be2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:43:49, skipping insertion in model container [2021-10-20 05:43:49,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:43:49" (3/3) ... [2021-10-20 05:43:49,167 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product46.cil.c [2021-10-20 05:43:49,174 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 05:43:49,174 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-20 05:43:49,238 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 05:43:49,247 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 [2021-10-20 05:43:49,250 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-20 05:43:49,281 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 125 states have (on average 1.536) internal successors, (192), 128 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:43:49,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-20 05:43:49,308 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:43:49,309 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:43:49,310 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:43:49,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:43:49,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1027746333, now seen corresponding path program 1 times [2021-10-20 05:43:49,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:43:49,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1534173419] [2021-10-20 05:43:49,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:43:49,339 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:43:49,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:43:49,345 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:43:49,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-20 05:43:49,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:43:49,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-20 05:43:49,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:43:49,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:43:49,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:43:49,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:43:49,848 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:43:49,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1534173419] [2021-10-20 05:43:49,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1534173419] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:43:49,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:43:49,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-20 05:43:49,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225313777] [2021-10-20 05:43:49,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-20 05:43:49,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:43:49,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-20 05:43:49,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-20 05:43:49,882 INFO L87 Difference]: Start difference. First operand has 129 states, 125 states have (on average 1.536) internal successors, (192), 128 states have internal predecessors, (192), 0 states have call successors, (0), 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 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:43:49,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:43:49,949 INFO L93 Difference]: Finished difference Result 252 states and 377 transitions. [2021-10-20 05:43:49,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-20 05:43:49,951 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-20 05:43:49,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:43:49,974 INFO L225 Difference]: With dead ends: 252 [2021-10-20 05:43:49,975 INFO L226 Difference]: Without dead ends: 125 [2021-10-20 05:43:49,979 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-20 05:43:49,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-10-20 05:43:50,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-10-20 05:43:50,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 122 states have (on average 1.4754098360655739) internal successors, (180), 124 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:43:50,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 180 transitions. [2021-10-20 05:43:50,053 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 180 transitions. Word has length 16 [2021-10-20 05:43:50,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:43:50,055 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 180 transitions. [2021-10-20 05:43:50,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:43:50,057 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 180 transitions. [2021-10-20 05:43:50,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-20 05:43:50,060 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:43:50,060 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:43:50,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-20 05:43:50,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:43:50,278 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:43:50,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:43:50,279 INFO L82 PathProgramCache]: Analyzing trace with hash -2074503230, now seen corresponding path program 1 times [2021-10-20 05:43:50,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:43:50,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27950802] [2021-10-20 05:43:50,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:43:50,281 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:43:50,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:43:50,282 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:43:50,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-20 05:43:50,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:43:50,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-20 05:43:50,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:43:50,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:43:50,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:43:50,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:43:50,632 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:43:50,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27950802] [2021-10-20 05:43:50,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [27950802] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:43:50,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:43:50,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-20 05:43:50,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204199920] [2021-10-20 05:43:50,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 05:43:50,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:43:50,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 05:43:50,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:43:50,636 INFO L87 Difference]: Start difference. First operand 125 states and 180 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:43:50,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:43:50,651 INFO L93 Difference]: Finished difference Result 125 states and 180 transitions. [2021-10-20 05:43:50,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:43:50,652 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-20 05:43:50,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:43:50,653 INFO L225 Difference]: With dead ends: 125 [2021-10-20 05:43:50,653 INFO L226 Difference]: Without dead ends: 51 [2021-10-20 05:43:50,654 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:43:50,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-20 05:43:50,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-20 05:43:50,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.46) internal successors, (73), 50 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:43:50,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 73 transitions. [2021-10-20 05:43:50,660 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 73 transitions. Word has length 17 [2021-10-20 05:43:50,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:43:50,661 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 73 transitions. [2021-10-20 05:43:50,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:43:50,661 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 73 transitions. [2021-10-20 05:43:50,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-20 05:43:50,662 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:43:50,662 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:43:50,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-20 05:43:50,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:43:50,879 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:43:50,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:43:50,880 INFO L82 PathProgramCache]: Analyzing trace with hash 640818778, now seen corresponding path program 1 times [2021-10-20 05:43:50,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:43:50,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [562372618] [2021-10-20 05:43:50,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:43:50,884 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:43:50,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:43:50,886 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:43:50,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-20 05:43:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:43:51,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-20 05:43:51,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:43:51,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:43:51,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:43:51,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:43:51,360 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:43:51,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [562372618] [2021-10-20 05:43:51,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [562372618] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:43:51,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:43:51,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-20 05:43:51,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225915087] [2021-10-20 05:43:51,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 05:43:51,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:43:51,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 05:43:51,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:43:51,363 INFO L87 Difference]: Start difference. First operand 51 states and 73 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:43:51,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:43:51,435 INFO L93 Difference]: Finished difference Result 96 states and 140 transitions. [2021-10-20 05:43:51,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:43:51,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-20 05:43:51,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:43:51,443 INFO L225 Difference]: With dead ends: 96 [2021-10-20 05:43:51,444 INFO L226 Difference]: Without dead ends: 51 [2021-10-20 05:43:51,444 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:43:51,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-20 05:43:51,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-20 05:43:51,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.44) internal successors, (72), 50 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:43:51,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 72 transitions. [2021-10-20 05:43:51,452 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 72 transitions. Word has length 22 [2021-10-20 05:43:51,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:43:51,452 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 72 transitions. [2021-10-20 05:43:51,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:43:51,452 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 72 transitions. [2021-10-20 05:43:51,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-20 05:43:51,453 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:43:51,453 INFO L512 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] [2021-10-20 05:43:51,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-20 05:43:51,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:43:51,654 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:43:51,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:43:51,655 INFO L82 PathProgramCache]: Analyzing trace with hash -855709928, now seen corresponding path program 1 times [2021-10-20 05:43:51,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:43:51,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1549499190] [2021-10-20 05:43:51,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:43:51,657 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:43:51,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:43:51,662 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:43:51,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-20 05:43:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:43:51,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-20 05:43:51,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:43:52,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:43:52,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:43:52,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:43:52,089 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:43:52,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1549499190] [2021-10-20 05:43:52,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1549499190] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:43:52,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:43:52,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-20 05:43:52,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118044848] [2021-10-20 05:43:52,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:43:52,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:43:52,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:43:52,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:43:52,094 INFO L87 Difference]: Start difference. First operand 51 states and 72 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:43:52,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:43:52,169 INFO L93 Difference]: Finished difference Result 117 states and 168 transitions. [2021-10-20 05:43:52,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:43:52,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2021-10-20 05:43:52,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:43:52,175 INFO L225 Difference]: With dead ends: 117 [2021-10-20 05:43:52,175 INFO L226 Difference]: Without dead ends: 72 [2021-10-20 05:43:52,179 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:43:52,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-20 05:43:52,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2021-10-20 05:43:52,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.4202898550724639) internal successors, (98), 69 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:43:52,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 98 transitions. [2021-10-20 05:43:52,197 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 98 transitions. Word has length 24 [2021-10-20 05:43:52,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:43:52,198 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 98 transitions. [2021-10-20 05:43:52,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:43:52,198 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 98 transitions. [2021-10-20 05:43:52,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-20 05:43:52,199 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:43:52,200 INFO L512 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] [2021-10-20 05:43:52,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-20 05:43:52,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:43:52,415 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:43:52,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:43:52,416 INFO L82 PathProgramCache]: Analyzing trace with hash -407287284, now seen corresponding path program 1 times [2021-10-20 05:43:52,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:43:52,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961210366] [2021-10-20 05:43:52,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:43:52,417 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:43:52,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:43:52,418 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:43:52,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-20 05:43:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:43:52,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-20 05:43:52,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:43:52,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:43:52,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:43:53,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:43:53,007 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:43:53,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [961210366] [2021-10-20 05:43:53,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [961210366] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:43:53,008 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:43:53,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-20 05:43:53,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823414940] [2021-10-20 05:43:53,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-20 05:43:53,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:43:53,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-20 05:43:53,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-20 05:43:53,015 INFO L87 Difference]: Start difference. First operand 70 states and 98 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:43:53,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:43:53,429 INFO L93 Difference]: Finished difference Result 518 states and 751 transitions. [2021-10-20 05:43:53,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-20 05:43:53,430 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-20 05:43:53,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:43:53,434 INFO L225 Difference]: With dead ends: 518 [2021-10-20 05:43:53,434 INFO L226 Difference]: Without dead ends: 454 [2021-10-20 05:43:53,435 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 168.8ms TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-10-20 05:43:53,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-10-20 05:43:53,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 169. [2021-10-20 05:43:53,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.3928571428571428) internal successors, (234), 168 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:43:53,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 234 transitions. [2021-10-20 05:43:53,474 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 234 transitions. Word has length 30 [2021-10-20 05:43:53,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:43:53,474 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 234 transitions. [2021-10-20 05:43:53,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:43:53,475 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 234 transitions. [2021-10-20 05:43:53,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-20 05:43:53,478 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:43:53,478 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:43:53,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-20 05:43:53,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:43:53,693 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:43:53,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:43:53,694 INFO L82 PathProgramCache]: Analyzing trace with hash 2129473089, now seen corresponding path program 1 times [2021-10-20 05:43:53,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:43:53,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [292553729] [2021-10-20 05:43:53,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:43:53,695 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:43:53,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:43:53,696 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:43:53,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-20 05:43:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:43:53,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-20 05:43:53,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:43:54,150 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-20 05:43:54,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:43:54,303 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-20 05:43:54,303 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:43:54,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [292553729] [2021-10-20 05:43:54,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [292553729] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:43:54,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:43:54,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-20 05:43:54,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279886187] [2021-10-20 05:43:54,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 05:43:54,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:43:54,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 05:43:54,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:43:54,313 INFO L87 Difference]: Start difference. First operand 169 states and 234 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:43:54,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:43:54,425 INFO L93 Difference]: Finished difference Result 458 states and 627 transitions. [2021-10-20 05:43:54,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-20 05:43:54,425 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-20 05:43:54,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:43:54,428 INFO L225 Difference]: With dead ends: 458 [2021-10-20 05:43:54,428 INFO L226 Difference]: Without dead ends: 295 [2021-10-20 05:43:54,430 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-20 05:43:54,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-10-20 05:43:54,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 184. [2021-10-20 05:43:54,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.360655737704918) internal successors, (249), 183 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:43:54,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 249 transitions. [2021-10-20 05:43:54,476 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 249 transitions. Word has length 51 [2021-10-20 05:43:54,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:43:54,478 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 249 transitions. [2021-10-20 05:43:54,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:43:54,478 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 249 transitions. [2021-10-20 05:43:54,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-20 05:43:54,489 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:43:54,490 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:43:54,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-20 05:43:54,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:43:54,706 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:43:54,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:43:54,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1463894333, now seen corresponding path program 1 times [2021-10-20 05:43:54,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:43:54,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489247932] [2021-10-20 05:43:54,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:43:54,708 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:43:54,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:43:54,710 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:43:54,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-20 05:43:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:43:55,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-20 05:43:55,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:43:55,133 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-20 05:43:55,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:43:55,291 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-20 05:43:55,291 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:43:55,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489247932] [2021-10-20 05:43:55,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489247932] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:43:55,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:43:55,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-20 05:43:55,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621189425] [2021-10-20 05:43:55,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-20 05:43:55,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:43:55,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-20 05:43:55,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-20 05:43:55,294 INFO L87 Difference]: Start difference. First operand 184 states and 249 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:43:55,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:43:55,382 INFO L93 Difference]: Finished difference Result 420 states and 567 transitions. [2021-10-20 05:43:55,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 05:43:55,383 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-20 05:43:55,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:43:55,385 INFO L225 Difference]: With dead ends: 420 [2021-10-20 05:43:55,385 INFO L226 Difference]: Without dead ends: 242 [2021-10-20 05:43:55,386 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 26.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-20 05:43:55,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-10-20 05:43:55,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 154. [2021-10-20 05:43:55,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.3333333333333333) internal successors, (204), 153 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:43:55,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 204 transitions. [2021-10-20 05:43:55,410 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 204 transitions. Word has length 51 [2021-10-20 05:43:55,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:43:55,411 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 204 transitions. [2021-10-20 05:43:55,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:43:55,411 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 204 transitions. [2021-10-20 05:43:55,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-20 05:43:55,412 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:43:55,413 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:43:55,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-20 05:43:55,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:43:55,635 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:43:55,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:43:55,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1981323655, now seen corresponding path program 1 times [2021-10-20 05:43:55,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:43:55,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323608489] [2021-10-20 05:43:55,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:43:55,637 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:43:55,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:43:55,639 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:43:55,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-20 05:43:55,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:43:55,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-20 05:43:55,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:43:56,241 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-20 05:43:56,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:43:56,470 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-20 05:43:56,470 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:43:56,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1323608489] [2021-10-20 05:43:56,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1323608489] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:43:56,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:43:56,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-20 05:43:56,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707816213] [2021-10-20 05:43:56,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-20 05:43:56,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:43:56,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-20 05:43:56,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-20 05:43:56,473 INFO L87 Difference]: Start difference. First operand 154 states and 204 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:43:56,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:43:56,737 INFO L93 Difference]: Finished difference Result 756 states and 1034 transitions. [2021-10-20 05:43:56,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-20 05:43:56,738 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-20 05:43:56,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:43:56,743 INFO L225 Difference]: With dead ends: 756 [2021-10-20 05:43:56,743 INFO L226 Difference]: Without dead ends: 608 [2021-10-20 05:43:56,744 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 105.8ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-20 05:43:56,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-10-20 05:43:56,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 300. [2021-10-20 05:43:56,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 1.3177257525083612) internal successors, (394), 299 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:43:56,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 394 transitions. [2021-10-20 05:43:56,801 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 394 transitions. Word has length 52 [2021-10-20 05:43:56,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:43:56,802 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 394 transitions. [2021-10-20 05:43:56,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:43:56,802 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 394 transitions. [2021-10-20 05:43:56,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-20 05:43:56,804 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:43:56,804 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:43:56,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-20 05:43:57,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:43:57,020 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:43:57,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:43:57,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1599009123, now seen corresponding path program 1 times [2021-10-20 05:43:57,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:43:57,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713809774] [2021-10-20 05:43:57,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:43:57,022 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:43:57,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:43:57,023 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:43:57,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-20 05:43:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:43:57,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-20 05:43:57,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:43:57,549 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 17 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:43:57,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:43:57,809 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 17 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:43:57,809 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:43:57,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713809774] [2021-10-20 05:43:57,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713809774] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 05:43:57,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [926214916] [2021-10-20 05:43:57,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:43:57,810 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-20 05:43:57,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/cvc4 [2021-10-20 05:43:57,817 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-20 05:43:57,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-20 05:43:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:43:58,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-20 05:43:58,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:43:58,502 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-20 05:43:58,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:43:58,621 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-20 05:43:58,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [926214916] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:43:58,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-20 05:43:58,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [3, 3] total 9 [2021-10-20 05:43:58,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064944706] [2021-10-20 05:43:58,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 05:43:58,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:43:58,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 05:43:58,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-20 05:43:58,623 INFO L87 Difference]: Start difference. First operand 300 states and 394 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:43:58,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:43:58,933 INFO L93 Difference]: Finished difference Result 800 states and 1059 transitions. [2021-10-20 05:43:58,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-20 05:43:58,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-10-20 05:43:58,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:43:58,940 INFO L225 Difference]: With dead ends: 800 [2021-10-20 05:43:58,940 INFO L226 Difference]: Without dead ends: 798 [2021-10-20 05:43:58,941 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 106.6ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-20 05:43:58,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2021-10-20 05:43:59,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 300. [2021-10-20 05:43:59,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 1.3110367892976589) internal successors, (392), 299 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:43:59,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 392 transitions. [2021-10-20 05:43:59,004 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 392 transitions. Word has length 53 [2021-10-20 05:43:59,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:43:59,004 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 392 transitions. [2021-10-20 05:43:59,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:43:59,005 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 392 transitions. [2021-10-20 05:43:59,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-20 05:43:59,006 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:43:59,007 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:43:59,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-10-20 05:43:59,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-20 05:43:59,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:43:59,410 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:43:59,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:43:59,411 INFO L82 PathProgramCache]: Analyzing trace with hash 596801484, now seen corresponding path program 1 times [2021-10-20 05:43:59,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:43:59,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1928022813] [2021-10-20 05:43:59,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:43:59,411 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:43:59,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:43:59,412 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:43:59,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-20 05:43:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:43:59,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-20 05:43:59,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:44:00,087 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-20 05:44:00,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:44:00,371 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-20 05:44:00,371 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:44:00,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1928022813] [2021-10-20 05:44:00,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1928022813] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 05:44:00,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [407544106] [2021-10-20 05:44:00,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:44:00,372 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-20 05:44:00,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/cvc4 [2021-10-20 05:44:00,376 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-20 05:44:00,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-10-20 05:44:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:44:00,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-20 05:44:00,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:44:01,126 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-20 05:44:01,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:44:01,354 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-20 05:44:01,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [407544106] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 05:44:01,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516675749] [2021-10-20 05:44:01,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:44:01,354 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:44:01,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:44:01,356 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 05:44:01,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-20 05:44:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:44:01,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-20 05:44:01,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:44:01,984 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-20 05:44:01,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:44:02,234 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-20 05:44:02,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516675749] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 05:44:02,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-20 05:44:02,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2021-10-20 05:44:02,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371462781] [2021-10-20 05:44:02,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-20 05:44:02,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:44:02,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-20 05:44:02,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-20 05:44:02,238 INFO L87 Difference]: Start difference. First operand 300 states and 392 transitions. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:44:04,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:44:04,756 INFO L93 Difference]: Finished difference Result 1973 states and 2625 transitions. [2021-10-20 05:44:04,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-20 05:44:04,757 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 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 53 [2021-10-20 05:44:04,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:44:04,769 INFO L225 Difference]: With dead ends: 1973 [2021-10-20 05:44:04,769 INFO L226 Difference]: Without dead ends: 1727 [2021-10-20 05:44:04,771 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 354.3ms TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2021-10-20 05:44:04,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2021-10-20 05:44:04,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 538. [2021-10-20 05:44:04,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 1.329608938547486) internal successors, (714), 537 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:44:04,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 714 transitions. [2021-10-20 05:44:04,886 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 714 transitions. Word has length 53 [2021-10-20 05:44:04,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:44:04,887 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 714 transitions. [2021-10-20 05:44:04,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:44:04,888 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 714 transitions. [2021-10-20 05:44:04,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-10-20 05:44:04,889 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:44:04,889 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:44:04,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-10-20 05:44:05,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-20 05:44:05,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-10-20 05:44:05,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt [2021-10-20 05:44:05,523 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:44:05,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:44:05,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1994887391, now seen corresponding path program 2 times [2021-10-20 05:44:05,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:44:05,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94840005] [2021-10-20 05:44:05,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-20 05:44:05,525 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:44:05,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:44:05,527 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:44:05,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-20 05:44:07,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-20 05:44:07,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-10-20 05:44:07,385 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-20 05:44:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:44:09,226 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-20 05:44:09,227 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-20 05:44:09,228 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:44:09,230 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:44:09,230 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:44:09,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-20 05:44:09,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:44:09,461 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 05:44:09,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:44:09 BoogieIcfgContainer [2021-10-20 05:44:09,718 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 05:44:09,719 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 05:44:09,719 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 05:44:09,720 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 05:44:09,720 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:43:49" (3/4) ... [2021-10-20 05:44:09,722 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-20 05:44:09,906 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 05:44:09,906 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 05:44:09,908 INFO L168 Benchmark]: Toolchain (without parser) took 24570.69 ms. Allocated memory was 54.5 MB in the beginning and 109.1 MB in the end (delta: 54.5 MB). Free memory was 30.3 MB in the beginning and 28.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 54.4 MB. Max. memory is 16.1 GB. [2021-10-20 05:44:09,909 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 54.5 MB. Free memory was 35.6 MB in the beginning and 35.6 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:44:09,910 INFO L168 Benchmark]: CACSL2BoogieTranslator took 710.48 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.1 MB in the beginning and 34.9 MB in the end (delta: -4.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-20 05:44:09,910 INFO L168 Benchmark]: Boogie Procedure Inliner took 149.05 ms. Allocated memory is still 67.1 MB. Free memory was 34.8 MB in the beginning and 48.5 MB in the end (delta: -13.7 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2021-10-20 05:44:09,911 INFO L168 Benchmark]: Boogie Preprocessor took 86.99 ms. Allocated memory is still 67.1 MB. Free memory was 48.5 MB in the beginning and 45.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-20 05:44:09,911 INFO L168 Benchmark]: RCFGBuilder took 2869.62 ms. Allocated memory was 67.1 MB in the beginning and 90.2 MB in the end (delta: 23.1 MB). Free memory was 45.6 MB in the beginning and 65.7 MB in the end (delta: -20.1 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. [2021-10-20 05:44:09,912 INFO L168 Benchmark]: TraceAbstraction took 20558.84 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 65.1 MB in the beginning and 57.9 MB in the end (delta: 7.3 MB). Peak memory consumption was 58.7 MB. Max. memory is 16.1 GB. [2021-10-20 05:44:09,913 INFO L168 Benchmark]: Witness Printer took 187.50 ms. Allocated memory is still 109.1 MB. Free memory was 57.9 MB in the beginning and 28.9 MB in the end (delta: 28.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2021-10-20 05:44:09,916 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 54.5 MB. Free memory was 35.6 MB in the beginning and 35.6 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 710.48 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.1 MB in the beginning and 34.9 MB in the end (delta: -4.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 149.05 ms. Allocated memory is still 67.1 MB. Free memory was 34.8 MB in the beginning and 48.5 MB in the end (delta: -13.7 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 86.99 ms. Allocated memory is still 67.1 MB. Free memory was 48.5 MB in the beginning and 45.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2869.62 ms. Allocated memory was 67.1 MB in the beginning and 90.2 MB in the end (delta: 23.1 MB). Free memory was 45.6 MB in the beginning and 65.7 MB in the end (delta: -20.1 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 20558.84 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 65.1 MB in the beginning and 57.9 MB in the end (delta: 7.3 MB). Peak memory consumption was 58.7 MB. Max. memory is 16.1 GB. * Witness Printer took 187.50 ms. Allocated memory is still 109.1 MB. Free memory was 57.9 MB in the beginning and 28.9 MB in the end (delta: 28.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 553]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L50] int cleanupTimeShifts = 4; [L352] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L565] int pumpRunning = 0; [L566] int systemActive = 1; [L768] int waterLevel = 1; [L769] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L131] int retValue_acc ; [L132] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L955] int retValue_acc ; [L958] retValue_acc = 1 [L959] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L138] tmp = valid_product() [L140] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L863] int splverifierCounter ; [L864] int tmp ; [L865] int tmp___0 ; [L866] int tmp___1 ; [L867] int tmp___2 ; [L870] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L872] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L874] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L880] tmp = __VERIFIER_nondet_int() [L882] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L786] COND TRUE waterLevel < 2 [L787] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L890] tmp___0 = __VERIFIER_nondet_int() [L892] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L900] tmp___2 = __VERIFIER_nondet_int() [L902] COND TRUE \read(tmp___2) [L763] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L572] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L579] COND TRUE \read(systemActive) [L627] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L630] COND FALSE !(\read(pumpRunning)) [L601] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L604] COND TRUE ! pumpRunning [L741] int retValue_acc ; [L742] int tmp ; [L743] int tmp___0 ; [L848] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L851] COND FALSE !(waterLevel < 2) [L855] retValue_acc = 0 [L856] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L747] tmp = isHighWaterSensorDry() [L749] COND FALSE !(\read(tmp)) [L752] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L754] retValue_acc = tmp___0 [L755] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L606] tmp = isHighWaterLevel() [L608] COND TRUE \read(tmp) [L660] int tmp ; [L685] int retValue_acc ; [L807] int retValue_acc ; [L810] retValue_acc = methaneLevelCritical [L811] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L689] retValue_acc = isMethaneLevelCritical() [L691] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L664] tmp = isMethaneAlarm() [L666] COND FALSE !(\read(tmp)) [L655] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L158] int tmp ; [L159] int tmp___0 ; [L839] int retValue_acc ; [L842] retValue_acc = waterLevel [L843] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L163] tmp = getWaterLevel() [L165] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L872] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L874] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L880] tmp = __VERIFIER_nondet_int() [L882] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L890] tmp___0 = __VERIFIER_nondet_int() [L892] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L900] tmp___2 = __VERIFIER_nondet_int() [L902] COND TRUE \read(tmp___2) [L763] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L572] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L774] COND TRUE waterLevel > 0 [L775] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L579] COND TRUE \read(systemActive) [L627] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L630] COND TRUE \read(pumpRunning) [L685] int retValue_acc ; [L807] int retValue_acc ; [L810] retValue_acc = methaneLevelCritical [L811] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L689] retValue_acc = isMethaneLevelCritical() [L691] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L632] tmp = isMethaneAlarm() [L634] COND FALSE !(\read(tmp)) [L601] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L604] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L158] int tmp ; [L159] int tmp___0 ; [L839] int retValue_acc ; [L842] retValue_acc = waterLevel [L843] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L163] tmp = getWaterLevel() [L165] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L872] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L874] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L880] tmp = __VERIFIER_nondet_int() [L882] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L890] tmp___0 = __VERIFIER_nondet_int() [L892] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L900] tmp___2 = __VERIFIER_nondet_int() [L902] COND TRUE \read(tmp___2) [L763] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L572] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L774] COND TRUE waterLevel > 0 [L775] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L579] COND TRUE \read(systemActive) [L627] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L630] COND TRUE \read(pumpRunning) [L685] int retValue_acc ; [L807] int retValue_acc ; [L810] retValue_acc = methaneLevelCritical [L811] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L689] retValue_acc = isMethaneLevelCritical() [L691] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L632] tmp = isMethaneAlarm() [L634] COND FALSE !(\read(tmp)) [L601] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L604] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L158] int tmp ; [L159] int tmp___0 ; [L839] int retValue_acc ; [L842] retValue_acc = waterLevel [L843] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L163] tmp = getWaterLevel() [L165] COND TRUE tmp == 0 [L696] int retValue_acc ; [L699] retValue_acc = pumpRunning [L700] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L167] tmp___0 = isPumpRunning() [L169] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L553] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - UnprovableResult [Line: 553]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 129 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 20222.5ms, OverallIterations: 11, TraceHistogramMax: 3, EmptinessCheckTime: 59.0ms, AutomataDifference: 4068.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 23.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1165 SDtfs, 2606 SDslu, 2805 SDs, 0 SdLazy, 484 SolverSat, 117 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2315.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1076 GetRequests, 999 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 827.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=538occurred in iteration=10, InterpolantAutomatonStates: 80, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 430.1ms AutomataMinimizationTime, 10 MinimizatonAttempts, 2481 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 410.4ms SsaConstructionTime, 3171.5ms SatisfiabilityAnalysisTime, 4498.9ms InterpolantComputationTime, 600 NumberOfCodeBlocks, 600 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1030 ConstructedInterpolants, 0 QuantifiedInterpolants, 2351 SizeOfPredicates, 26 NumberOfNonLiveVariables, 2920 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 26 InterpolantComputations, 18 PerfectInterpolantSequences, 192/256 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-20 05:44:09,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc243e9f-9f5e-4089-b1fe-9c0b3cc5461a/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...