./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1493e9da3ad278988eda47a556733ebc5ac5411d3350d76fb478293d9e5d934e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:09:00,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:09:00,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:09:00,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:09:00,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:09:00,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:09:00,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:09:00,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:09:00,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:09:00,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:09:00,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:09:00,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:09:00,916 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:09:00,918 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:09:00,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:09:00,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:09:00,925 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:09:00,926 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:09:00,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:09:00,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:09:00,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:09:00,945 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:09:00,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:09:00,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:09:00,959 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:09:00,959 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:09:00,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:09:00,962 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:09:00,963 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:09:00,964 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:09:00,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:09:00,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:09:00,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:09:00,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:09:00,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:09:00,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:09:00,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:09:00,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:09:00,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:09:00,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:09:00,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:09:00,975 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 02:09:01,021 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:09:01,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:09:01,023 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:09:01,024 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:09:01,024 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:09:01,024 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:09:01,025 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:09:01,025 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:09:01,025 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:09:01,025 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:09:01,026 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:09:01,027 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:09:01,027 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:09:01,027 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:09:01,027 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:09:01,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:09:01,028 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:09:01,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:09:01,029 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:09:01,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:09:01,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:09:01,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:09:01,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:09:01,030 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:09:01,030 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:09:01,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:09:01,031 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:09:01,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:09:01,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:09:01,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:09:01,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:09:01,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:09:01,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:09:01,033 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:09:01,033 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:09:01,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:09:01,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:09:01,034 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:09:01,034 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:09:01,034 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_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1493e9da3ad278988eda47a556733ebc5ac5411d3350d76fb478293d9e5d934e [2021-11-07 02:09:01,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:09:01,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:09:01,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:09:01,385 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:09:01,386 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:09:01,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c [2021-11-07 02:09:01,460 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/data/7aeb1e981/ece900433d2e406bb57e8c581c624ee2/FLAG339ac548e [2021-11-07 02:09:02,178 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:09:02,179 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c [2021-11-07 02:09:02,206 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/data/7aeb1e981/ece900433d2e406bb57e8c581c624ee2/FLAG339ac548e [2021-11-07 02:09:02,340 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/data/7aeb1e981/ece900433d2e406bb57e8c581c624ee2 [2021-11-07 02:09:02,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:09:02,343 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:09:02,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:09:02,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:09:02,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:09:02,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:09:02" (1/1) ... [2021-11-07 02:09:02,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@104ce9a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:02, skipping insertion in model container [2021-11-07 02:09:02,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:09:02" (1/1) ... [2021-11-07 02:09:02,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:09:02,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:09:02,764 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_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c[11768,11781] [2021-11-07 02:09:03,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:09:03,085 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 02:09:03,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7bd455c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:03, skipping insertion in model container [2021-11-07 02:09:03,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:09:03,087 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:09:03,089 INFO L168 Benchmark]: Toolchain (without parser) took 744.80 ms. Allocated memory was 88.1 MB in the beginning and 123.7 MB in the end (delta: 35.7 MB). Free memory was 50.3 MB in the beginning and 83.2 MB in the end (delta: -32.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 02:09:03,091 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 88.1 MB. Free memory was 58.4 MB in the beginning and 58.4 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:09:03,093 INFO L168 Benchmark]: CACSL2BoogieTranslator took 741.98 ms. Allocated memory was 88.1 MB in the beginning and 123.7 MB in the end (delta: 35.7 MB). Free memory was 50.0 MB in the beginning and 83.2 MB in the end (delta: -33.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 02:09:03,096 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 88.1 MB. Free memory was 58.4 MB in the beginning and 58.4 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 741.98 ms. Allocated memory was 88.1 MB in the beginning and 123.7 MB in the end (delta: 35.7 MB). Free memory was 50.0 MB in the beginning and 83.2 MB in the end (delta: -33.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 77]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1493e9da3ad278988eda47a556733ebc5ac5411d3350d76fb478293d9e5d934e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:09:05,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:09:05,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:09:05,354 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:09:05,355 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:09:05,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:09:05,361 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:09:05,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:09:05,368 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:09:05,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:09:05,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:09:05,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:09:05,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:09:05,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:09:05,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:09:05,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:09:05,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:09:05,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:09:05,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:09:05,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:09:05,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:09:05,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:09:05,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:09:05,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:09:05,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:09:05,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:09:05,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:09:05,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:09:05,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:09:05,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:09:05,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:09:05,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:09:05,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:09:05,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:09:05,418 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:09:05,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:09:05,419 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:09:05,419 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:09:05,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:09:05,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:09:05,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:09:05,422 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 02:09:05,448 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:09:05,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:09:05,449 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:09:05,449 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:09:05,450 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:09:05,450 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:09:05,450 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:09:05,450 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:09:05,450 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:09:05,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:09:05,451 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:09:05,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:09:05,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:09:05,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:09:05,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:09:05,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:09:05,453 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:09:05,453 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:09:05,453 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:09:05,453 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:09:05,453 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:09:05,453 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:09:05,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:09:05,454 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:09:05,454 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:09:05,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:09:05,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:09:05,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:09:05,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:09:05,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:09:05,455 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:09:05,456 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:09:05,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:09:05,456 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:09:05,456 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:09:05,456 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_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1493e9da3ad278988eda47a556733ebc5ac5411d3350d76fb478293d9e5d934e [2021-11-07 02:09:05,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:09:05,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:09:05,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:09:05,880 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:09:05,881 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:09:05,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c [2021-11-07 02:09:05,956 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/data/f56c19dd6/a884f6133da549a4ba24a0e04763e87a/FLAG4d3e940f2 [2021-11-07 02:09:06,667 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:09:06,668 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c [2021-11-07 02:09:06,702 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/data/f56c19dd6/a884f6133da549a4ba24a0e04763e87a/FLAG4d3e940f2 [2021-11-07 02:09:06,811 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/data/f56c19dd6/a884f6133da549a4ba24a0e04763e87a [2021-11-07 02:09:06,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:09:06,820 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:09:06,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:09:06,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:09:06,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:09:06,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:09:06" (1/1) ... [2021-11-07 02:09:06,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e6fba19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:06, skipping insertion in model container [2021-11-07 02:09:06,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:09:06" (1/1) ... [2021-11-07 02:09:06,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:09:06,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:09:07,284 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_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c[11768,11781] [2021-11-07 02:09:07,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:09:07,684 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:09:07,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:09:07,757 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_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c[11768,11781] [2021-11-07 02:09:07,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:09:07,895 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:09:07,949 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_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c[11768,11781] [2021-11-07 02:09:08,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:09:08,067 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:09:08,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:08 WrapperNode [2021-11-07 02:09:08,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:09:08,069 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:09:08,069 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:09:08,070 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:09:08,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:08" (1/1) ... [2021-11-07 02:09:08,127 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:08" (1/1) ... [2021-11-07 02:09:08,523 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:09:08,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:09:08,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:09:08,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:09:08,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:08" (1/1) ... [2021-11-07 02:09:08,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:08" (1/1) ... [2021-11-07 02:09:08,663 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:08" (1/1) ... [2021-11-07 02:09:08,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:08" (1/1) ... [2021-11-07 02:09:08,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:08" (1/1) ... [2021-11-07 02:09:09,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:08" (1/1) ... [2021-11-07 02:09:09,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:08" (1/1) ... [2021-11-07 02:09:09,313 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:09:09,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:09:09,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:09:09,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:09:09,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:08" (1/1) ... [2021-11-07 02:09:09,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:09:09,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:09:09,399 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:09:09,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:09:09,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:09:09,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:09:09,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:09:09,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:09:26,761 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:09:26,761 INFO L299 CfgBuilder]: Removed 1553 assume(true) statements. [2021-11-07 02:09:26,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:09:26 BoogieIcfgContainer [2021-11-07 02:09:26,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:09:26,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:09:26,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:09:26,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:09:26,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:09:06" (1/3) ... [2021-11-07 02:09:26,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@318be69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:09:26, skipping insertion in model container [2021-11-07 02:09:26,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:08" (2/3) ... [2021-11-07 02:09:26,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@318be69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:09:26, skipping insertion in model container [2021-11-07 02:09:26,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:09:26" (3/3) ... [2021-11-07 02:09:26,784 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product30.cil.c [2021-11-07 02:09:26,790 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:09:26,791 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-07 02:09:26,879 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:09:26,886 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 02:09:26,886 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 02:09:27,023 INFO L276 IsEmpty]: Start isEmpty. Operand has 6968 states, 6962 states have (on average 1.895288710140764) internal successors, (13195), 6967 states have internal predecessors, (13195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:27,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-07 02:09:27,033 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:27,033 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:27,034 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:09:27,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:27,040 INFO L85 PathProgramCache]: Analyzing trace with hash 210076529, now seen corresponding path program 1 times [2021-11-07 02:09:27,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:27,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1403147154] [2021-11-07 02:09:27,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:27,057 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:27,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:27,060 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:27,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:09:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:27,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 02:09:27,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:27,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:27,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:27,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:27,698 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:27,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1403147154] [2021-11-07 02:09:27,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1403147154] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:27,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:27,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:09:27,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391828928] [2021-11-07 02:09:27,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 02:09:27,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:27,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 02:09:27,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:09:27,741 INFO L87 Difference]: Start difference. First operand has 6968 states, 6962 states have (on average 1.895288710140764) internal successors, (13195), 6967 states have internal predecessors, (13195), 0 states have call successors, (0), 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 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:27,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:27,966 INFO L93 Difference]: Finished difference Result 6987 states and 13218 transitions. [2021-11-07 02:09:27,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 02:09:27,968 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2021-11-07 02:09:27,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:28,047 INFO L225 Difference]: With dead ends: 6987 [2021-11-07 02:09:28,047 INFO L226 Difference]: Without dead ends: 6964 [2021-11-07 02:09:28,062 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:09:28,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6964 states. [2021-11-07 02:09:28,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6964 to 6964. [2021-11-07 02:09:28,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6964 states, 6959 states have (on average 1.8943813766345738) internal successors, (13183), 6963 states have internal predecessors, (13183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:28,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6964 states to 6964 states and 13183 transitions. [2021-11-07 02:09:28,425 INFO L78 Accepts]: Start accepts. Automaton has 6964 states and 13183 transitions. Word has length 26 [2021-11-07 02:09:28,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:28,426 INFO L470 AbstractCegarLoop]: Abstraction has 6964 states and 13183 transitions. [2021-11-07 02:09:28,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:28,426 INFO L276 IsEmpty]: Start isEmpty. Operand 6964 states and 13183 transitions. [2021-11-07 02:09:28,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-07 02:09:28,429 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:28,430 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:28,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:28,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:28,654 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:09:28,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:28,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1237831974, now seen corresponding path program 1 times [2021-11-07 02:09:28,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:28,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472675621] [2021-11-07 02:09:28,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:28,661 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:28,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:28,663 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:28,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:09:29,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:29,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:09:29,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:29,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:29,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:29,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:29,213 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:29,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472675621] [2021-11-07 02:09:29,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [472675621] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:29,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:29,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:09:29,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073649921] [2021-11-07 02:09:29,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:09:29,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:29,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:09:29,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:09:29,222 INFO L87 Difference]: Start difference. First operand 6964 states and 13183 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:29,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:29,657 INFO L93 Difference]: Finished difference Result 13915 states and 26347 transitions. [2021-11-07 02:09:29,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:09:29,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-07 02:09:29,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:29,711 INFO L225 Difference]: With dead ends: 13915 [2021-11-07 02:09:29,711 INFO L226 Difference]: Without dead ends: 6964 [2021-11-07 02:09:29,724 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:09:29,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6964 states. [2021-11-07 02:09:30,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6964 to 6964. [2021-11-07 02:09:30,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6964 states, 6959 states have (on average 1.8935191837907746) internal successors, (13177), 6963 states have internal predecessors, (13177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:30,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6964 states to 6964 states and 13177 transitions. [2021-11-07 02:09:30,241 INFO L78 Accepts]: Start accepts. Automaton has 6964 states and 13177 transitions. Word has length 28 [2021-11-07 02:09:30,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:30,241 INFO L470 AbstractCegarLoop]: Abstraction has 6964 states and 13177 transitions. [2021-11-07 02:09:30,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:30,242 INFO L276 IsEmpty]: Start isEmpty. Operand 6964 states and 13177 transitions. [2021-11-07 02:09:30,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 02:09:30,244 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:30,244 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:30,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:30,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:30,458 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:09:30,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:30,458 INFO L85 PathProgramCache]: Analyzing trace with hash -982746192, now seen corresponding path program 1 times [2021-11-07 02:09:30,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:30,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1264482858] [2021-11-07 02:09:30,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:30,460 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:30,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:30,461 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:30,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:09:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:30,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:09:30,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:30,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:30,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:31,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:31,046 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:31,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1264482858] [2021-11-07 02:09:31,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1264482858] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:31,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:31,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 02:09:31,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928227624] [2021-11-07 02:09:31,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:09:31,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:31,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:09:31,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:09:31,048 INFO L87 Difference]: Start difference. First operand 6964 states and 13177 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:31,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:31,700 INFO L93 Difference]: Finished difference Result 13879 states and 26270 transitions. [2021-11-07 02:09:31,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:09:31,701 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-07 02:09:31,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:31,748 INFO L225 Difference]: With dead ends: 13879 [2021-11-07 02:09:31,748 INFO L226 Difference]: Without dead ends: 6937 [2021-11-07 02:09:31,760 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:09:31,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6937 states. [2021-11-07 02:09:31,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6937 to 6937. [2021-11-07 02:09:32,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6937 states, 6932 states have (on average 1.8928159261396422) internal successors, (13121), 6936 states have internal predecessors, (13121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:32,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 13121 transitions. [2021-11-07 02:09:32,061 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 13121 transitions. Word has length 33 [2021-11-07 02:09:32,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:32,062 INFO L470 AbstractCegarLoop]: Abstraction has 6937 states and 13121 transitions. [2021-11-07 02:09:32,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:32,063 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 13121 transitions. [2021-11-07 02:09:32,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 02:09:32,066 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:32,066 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:32,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:32,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:32,282 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:09:32,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:32,284 INFO L85 PathProgramCache]: Analyzing trace with hash -394981934, now seen corresponding path program 1 times [2021-11-07 02:09:32,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:32,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741152337] [2021-11-07 02:09:32,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:32,286 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:32,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:32,287 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:32,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:09:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:32,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:09:32,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:32,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:32,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:32,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:32,850 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:32,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741152337] [2021-11-07 02:09:32,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741152337] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:32,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:32,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:09:32,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045185146] [2021-11-07 02:09:32,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:09:32,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:32,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:09:32,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:09:32,854 INFO L87 Difference]: Start difference. First operand 6937 states and 13121 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:33,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:33,286 INFO L93 Difference]: Finished difference Result 13852 states and 26214 transitions. [2021-11-07 02:09:33,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:09:33,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-07 02:09:33,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:33,329 INFO L225 Difference]: With dead ends: 13852 [2021-11-07 02:09:33,330 INFO L226 Difference]: Without dead ends: 6937 [2021-11-07 02:09:33,340 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:09:33,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6937 states. [2021-11-07 02:09:33,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6937 to 6937. [2021-11-07 02:09:33,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6937 states, 6932 states have (on average 1.8919503750721292) internal successors, (13115), 6936 states have internal predecessors, (13115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:33,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 13115 transitions. [2021-11-07 02:09:33,626 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 13115 transitions. Word has length 34 [2021-11-07 02:09:33,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:33,627 INFO L470 AbstractCegarLoop]: Abstraction has 6937 states and 13115 transitions. [2021-11-07 02:09:33,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:33,627 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 13115 transitions. [2021-11-07 02:09:33,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-07 02:09:33,631 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:33,631 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:33,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:33,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:33,846 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:09:33,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:33,846 INFO L85 PathProgramCache]: Analyzing trace with hash 707423011, now seen corresponding path program 1 times [2021-11-07 02:09:33,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:33,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [179522441] [2021-11-07 02:09:33,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:33,847 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:33,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:33,848 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:33,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:09:34,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:34,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 02:09:34,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:34,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:34,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:34,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:34,497 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:34,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [179522441] [2021-11-07 02:09:34,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [179522441] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:34,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:34,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 02:09:34,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183629561] [2021-11-07 02:09:34,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:09:34,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:34,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:09:34,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:09:34,499 INFO L87 Difference]: Start difference. First operand 6937 states and 13115 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:35,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:35,080 INFO L93 Difference]: Finished difference Result 13846 states and 26197 transitions. [2021-11-07 02:09:35,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:09:35,080 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 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 39 [2021-11-07 02:09:35,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:35,104 INFO L225 Difference]: With dead ends: 13846 [2021-11-07 02:09:35,105 INFO L226 Difference]: Without dead ends: 6934 [2021-11-07 02:09:35,116 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:09:35,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6934 states. [2021-11-07 02:09:35,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6934 to 6934. [2021-11-07 02:09:35,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6934 states, 6929 states have (on average 1.8916149516524752) internal successors, (13107), 6933 states have internal predecessors, (13107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:35,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6934 states to 6934 states and 13107 transitions. [2021-11-07 02:09:35,429 INFO L78 Accepts]: Start accepts. Automaton has 6934 states and 13107 transitions. Word has length 39 [2021-11-07 02:09:35,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:35,429 INFO L470 AbstractCegarLoop]: Abstraction has 6934 states and 13107 transitions. [2021-11-07 02:09:35,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:35,430 INFO L276 IsEmpty]: Start isEmpty. Operand 6934 states and 13107 transitions. [2021-11-07 02:09:35,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-07 02:09:35,431 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:35,431 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:35,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:35,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:35,648 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:09:35,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:35,649 INFO L85 PathProgramCache]: Analyzing trace with hash 932455667, now seen corresponding path program 1 times [2021-11-07 02:09:35,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:35,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [523799849] [2021-11-07 02:09:35,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:35,650 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:35,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:35,651 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:35,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:09:36,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:36,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:09:36,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:36,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:36,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:36,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:36,571 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:36,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [523799849] [2021-11-07 02:09:36,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [523799849] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:36,572 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:36,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 02:09:36,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177822869] [2021-11-07 02:09:36,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:09:36,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:36,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:09:36,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:09:36,574 INFO L87 Difference]: Start difference. First operand 6934 states and 13107 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:37,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:37,840 INFO L93 Difference]: Finished difference Result 17993 states and 34069 transitions. [2021-11-07 02:09:37,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:09:37,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 40 [2021-11-07 02:09:37,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:37,892 INFO L225 Difference]: With dead ends: 17993 [2021-11-07 02:09:37,892 INFO L226 Difference]: Without dead ends: 14484 [2021-11-07 02:09:37,902 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:09:37,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14484 states. [2021-11-07 02:09:38,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14484 to 9021. [2021-11-07 02:09:38,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9021 states, 9016 states have (on average 1.8930789707187223) internal successors, (17068), 9020 states have internal predecessors, (17068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:38,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9021 states to 9021 states and 17068 transitions. [2021-11-07 02:09:38,403 INFO L78 Accepts]: Start accepts. Automaton has 9021 states and 17068 transitions. Word has length 40 [2021-11-07 02:09:38,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:38,404 INFO L470 AbstractCegarLoop]: Abstraction has 9021 states and 17068 transitions. [2021-11-07 02:09:38,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:38,404 INFO L276 IsEmpty]: Start isEmpty. Operand 9021 states and 17068 transitions. [2021-11-07 02:09:38,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-07 02:09:38,412 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:38,412 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:38,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:38,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:38,625 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:09:38,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:38,626 INFO L85 PathProgramCache]: Analyzing trace with hash 927678500, now seen corresponding path program 1 times [2021-11-07 02:09:38,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:38,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1919021726] [2021-11-07 02:09:38,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:38,627 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:38,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:38,629 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:38,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:09:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:39,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:09:39,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:39,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:39,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:39,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:39,522 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:39,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1919021726] [2021-11-07 02:09:39,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1919021726] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:39,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:39,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-07 02:09:39,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728142782] [2021-11-07 02:09:39,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:09:39,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:39,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:09:39,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:09:39,526 INFO L87 Difference]: Start difference. First operand 9021 states and 17068 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:40,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:40,393 INFO L93 Difference]: Finished difference Result 16890 states and 31758 transitions. [2021-11-07 02:09:40,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 02:09:40,394 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-07 02:09:40,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:40,422 INFO L225 Difference]: With dead ends: 16890 [2021-11-07 02:09:40,423 INFO L226 Difference]: Without dead ends: 9097 [2021-11-07 02:09:40,435 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:09:40,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9097 states. [2021-11-07 02:09:40,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9097 to 6331. [2021-11-07 02:09:40,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6331 states, 6326 states have (on average 1.8877647802718938) internal successors, (11942), 6330 states have internal predecessors, (11942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:40,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 11942 transitions. [2021-11-07 02:09:40,827 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 11942 transitions. Word has length 58 [2021-11-07 02:09:40,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:40,827 INFO L470 AbstractCegarLoop]: Abstraction has 6331 states and 11942 transitions. [2021-11-07 02:09:40,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:40,828 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 11942 transitions. [2021-11-07 02:09:40,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 02:09:40,832 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:40,832 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:40,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:41,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:41,052 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:09:41,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:41,052 INFO L85 PathProgramCache]: Analyzing trace with hash -342036837, now seen corresponding path program 1 times [2021-11-07 02:09:41,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:41,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563932277] [2021-11-07 02:09:41,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:41,053 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:41,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:41,055 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:41,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:09:41,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:41,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:09:41,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:41,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:41,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:43,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:43,155 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:43,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1563932277] [2021-11-07 02:09:43,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1563932277] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:43,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:43,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 02:09:43,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114772876] [2021-11-07 02:09:43,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:09:43,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:43,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:09:43,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:09:43,157 INFO L87 Difference]: Start difference. First operand 6331 states and 11942 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:48,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:48,941 INFO L93 Difference]: Finished difference Result 19992 states and 37785 transitions. [2021-11-07 02:09:48,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:09:48,946 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-07 02:09:48,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:48,985 INFO L225 Difference]: With dead ends: 19992 [2021-11-07 02:09:48,985 INFO L226 Difference]: Without dead ends: 13706 [2021-11-07 02:09:48,993 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:09:49,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13706 states. [2021-11-07 02:09:49,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13706 to 8711. [2021-11-07 02:09:49,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8711 states, 8706 states have (on average 1.8876636802205375) internal successors, (16434), 8710 states have internal predecessors, (16434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:49,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8711 states to 8711 states and 16434 transitions. [2021-11-07 02:09:49,381 INFO L78 Accepts]: Start accepts. Automaton has 8711 states and 16434 transitions. Word has length 59 [2021-11-07 02:09:49,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:49,383 INFO L470 AbstractCegarLoop]: Abstraction has 8711 states and 16434 transitions. [2021-11-07 02:09:49,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:49,384 INFO L276 IsEmpty]: Start isEmpty. Operand 8711 states and 16434 transitions. [2021-11-07 02:09:49,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 02:09:49,387 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:49,388 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:49,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:49,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:49,611 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:09:49,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:49,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1235686883, now seen corresponding path program 1 times [2021-11-07 02:09:49,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:49,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [469725246] [2021-11-07 02:09:49,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:49,612 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:49,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:49,613 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:49,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:09:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:50,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:09:50,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:50,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:50,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:50,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:50,498 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:50,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [469725246] [2021-11-07 02:09:50,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [469725246] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:50,499 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:50,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 02:09:50,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088069968] [2021-11-07 02:09:50,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:09:50,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:50,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:09:50,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:09:50,501 INFO L87 Difference]: Start difference. First operand 8711 states and 16434 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:56,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:56,663 INFO L93 Difference]: Finished difference Result 37974 states and 71368 transitions. [2021-11-07 02:09:56,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:09:56,664 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-07 02:09:56,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:56,755 INFO L225 Difference]: With dead ends: 37974 [2021-11-07 02:09:56,755 INFO L226 Difference]: Without dead ends: 29307 [2021-11-07 02:09:56,769 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:09:56,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29307 states. [2021-11-07 02:09:57,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29307 to 8725. [2021-11-07 02:09:57,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8725 states, 8720 states have (on average 1.8862385321100918) internal successors, (16448), 8724 states have internal predecessors, (16448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:57,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8725 states to 8725 states and 16448 transitions. [2021-11-07 02:09:57,393 INFO L78 Accepts]: Start accepts. Automaton has 8725 states and 16448 transitions. Word has length 60 [2021-11-07 02:09:57,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:57,394 INFO L470 AbstractCegarLoop]: Abstraction has 8725 states and 16448 transitions. [2021-11-07 02:09:57,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:57,394 INFO L276 IsEmpty]: Start isEmpty. Operand 8725 states and 16448 transitions. [2021-11-07 02:09:57,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 02:09:57,397 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:57,398 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:57,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:57,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:57,613 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:09:57,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:57,613 INFO L85 PathProgramCache]: Analyzing trace with hash 723322397, now seen corresponding path program 1 times [2021-11-07 02:09:57,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:57,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795627479] [2021-11-07 02:09:57,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:57,614 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:57,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:57,615 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:57,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 02:09:58,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:58,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:09:58,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:58,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:58,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:58,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:58,450 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:58,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795627479] [2021-11-07 02:09:58,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795627479] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:58,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:58,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:09:58,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217402995] [2021-11-07 02:09:58,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:09:58,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:58,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:09:58,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:09:58,452 INFO L87 Difference]: Start difference. First operand 8725 states and 16448 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:03,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:10:03,976 INFO L93 Difference]: Finished difference Result 27119 states and 50862 transitions. [2021-11-07 02:10:03,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:10:03,976 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-07 02:10:03,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:10:04,013 INFO L225 Difference]: With dead ends: 27119 [2021-11-07 02:10:04,014 INFO L226 Difference]: Without dead ends: 18425 [2021-11-07 02:10:04,026 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:10:04,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18425 states. [2021-11-07 02:10:04,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18425 to 10912. [2021-11-07 02:10:04,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10912 states, 10907 states have (on average 1.8497295314935362) internal successors, (20175), 10911 states have internal predecessors, (20175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:04,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10912 states to 10912 states and 20175 transitions. [2021-11-07 02:10:04,602 INFO L78 Accepts]: Start accepts. Automaton has 10912 states and 20175 transitions. Word has length 61 [2021-11-07 02:10:04,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:10:04,602 INFO L470 AbstractCegarLoop]: Abstraction has 10912 states and 20175 transitions. [2021-11-07 02:10:04,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:04,603 INFO L276 IsEmpty]: Start isEmpty. Operand 10912 states and 20175 transitions. [2021-11-07 02:10:04,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 02:10:04,605 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:10:04,605 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:10:04,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:10:04,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:10:04,821 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:10:04,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:10:04,821 INFO L85 PathProgramCache]: Analyzing trace with hash 100235269, now seen corresponding path program 1 times [2021-11-07 02:10:04,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:10:04,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1292550855] [2021-11-07 02:10:04,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:10:04,822 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:10:04,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:10:04,823 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:10:04,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 02:10:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:10:05,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:10:05,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:10:05,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:10:05,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:10:05,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:10:05,754 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:10:05,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1292550855] [2021-11-07 02:10:05,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1292550855] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:10:05,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:10:05,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 02:10:05,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821652513] [2021-11-07 02:10:05,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:10:05,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:10:05,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:10:05,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:10:05,756 INFO L87 Difference]: Start difference. First operand 10912 states and 20175 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:08,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:10:08,895 INFO L93 Difference]: Finished difference Result 76962 states and 142803 transitions. [2021-11-07 02:10:08,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 02:10:08,896 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 02:10:08,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:10:09,047 INFO L225 Difference]: With dead ends: 76962 [2021-11-07 02:10:09,048 INFO L226 Difference]: Without dead ends: 66090 [2021-11-07 02:10:09,072 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:10:09,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66090 states. [2021-11-07 02:10:10,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66090 to 17380. [2021-11-07 02:10:10,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17380 states, 17375 states have (on average 1.850474820143885) internal successors, (32152), 17379 states have internal predecessors, (32152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:10,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17380 states to 17380 states and 32152 transitions. [2021-11-07 02:10:10,674 INFO L78 Accepts]: Start accepts. Automaton has 17380 states and 32152 transitions. Word has length 63 [2021-11-07 02:10:10,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:10:10,675 INFO L470 AbstractCegarLoop]: Abstraction has 17380 states and 32152 transitions. [2021-11-07 02:10:10,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:10,675 INFO L276 IsEmpty]: Start isEmpty. Operand 17380 states and 32152 transitions. [2021-11-07 02:10:10,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 02:10:10,679 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:10:10,679 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:10:10,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:10:10,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:10:10,886 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:10:10,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:10:10,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1391874530, now seen corresponding path program 1 times [2021-11-07 02:10:10,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:10:10,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [841379729] [2021-11-07 02:10:10,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:10:10,888 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:10:10,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:10:10,889 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:10:10,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 02:10:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:10:11,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:10:11,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:10:11,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:10:11,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:10:11,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:10:11,892 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:10:11,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [841379729] [2021-11-07 02:10:11,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [841379729] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:10:11,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:10:11,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:10:11,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970112148] [2021-11-07 02:10:11,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:10:11,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:10:11,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:10:11,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:10:11,894 INFO L87 Difference]: Start difference. First operand 17380 states and 32152 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:13,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:10:13,376 INFO L93 Difference]: Finished difference Result 45723 states and 84661 transitions. [2021-11-07 02:10:13,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:10:13,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-07 02:10:13,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:10:13,436 INFO L225 Difference]: With dead ends: 45723 [2021-11-07 02:10:13,437 INFO L226 Difference]: Without dead ends: 30229 [2021-11-07 02:10:13,452 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:10:13,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30229 states. [2021-11-07 02:10:15,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30229 to 30214. [2021-11-07 02:10:15,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30214 states, 30209 states have (on average 1.8511370783541328) internal successors, (55921), 30213 states have internal predecessors, (55921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:15,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30214 states to 30214 states and 55921 transitions. [2021-11-07 02:10:15,083 INFO L78 Accepts]: Start accepts. Automaton has 30214 states and 55921 transitions. Word has length 64 [2021-11-07 02:10:15,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:10:15,084 INFO L470 AbstractCegarLoop]: Abstraction has 30214 states and 55921 transitions. [2021-11-07 02:10:15,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:15,084 INFO L276 IsEmpty]: Start isEmpty. Operand 30214 states and 55921 transitions. [2021-11-07 02:10:15,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 02:10:15,086 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:10:15,087 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:10:15,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 02:10:15,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:10:15,302 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:10:15,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:10:15,302 INFO L85 PathProgramCache]: Analyzing trace with hash -208564290, now seen corresponding path program 1 times [2021-11-07 02:10:15,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:10:15,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2034727712] [2021-11-07 02:10:15,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:10:15,303 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:10:15,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:10:15,305 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:10:15,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 02:10:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:10:15,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:10:15,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:10:16,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:10:16,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:10:16,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:10:16,274 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:10:16,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2034727712] [2021-11-07 02:10:16,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2034727712] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:10:16,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:10:16,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:10:16,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075254806] [2021-11-07 02:10:16,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:10:16,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:10:16,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:10:16,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:10:16,276 INFO L87 Difference]: Start difference. First operand 30214 states and 55921 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:19,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:10:19,053 INFO L93 Difference]: Finished difference Result 82929 states and 153542 transitions. [2021-11-07 02:10:19,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:10:19,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-07 02:10:19,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:10:19,149 INFO L225 Difference]: With dead ends: 82929 [2021-11-07 02:10:19,149 INFO L226 Difference]: Without dead ends: 55718 [2021-11-07 02:10:19,174 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:10:19,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55718 states. [2021-11-07 02:10:21,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55718 to 55703. [2021-11-07 02:10:22,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55703 states, 55698 states have (on average 1.8510359438399941) internal successors, (103099), 55702 states have internal predecessors, (103099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:22,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55703 states to 55703 states and 103099 transitions. [2021-11-07 02:10:22,108 INFO L78 Accepts]: Start accepts. Automaton has 55703 states and 103099 transitions. Word has length 65 [2021-11-07 02:10:22,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:10:22,108 INFO L470 AbstractCegarLoop]: Abstraction has 55703 states and 103099 transitions. [2021-11-07 02:10:22,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:22,109 INFO L276 IsEmpty]: Start isEmpty. Operand 55703 states and 103099 transitions. [2021-11-07 02:10:22,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 02:10:22,111 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:10:22,111 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:10:22,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 02:10:22,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:10:22,313 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:10:22,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:10:22,314 INFO L85 PathProgramCache]: Analyzing trace with hash 117092989, now seen corresponding path program 1 times [2021-11-07 02:10:22,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:10:22,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408731057] [2021-11-07 02:10:22,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:10:22,315 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:10:22,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:10:22,315 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:10:22,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 02:10:22,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:10:22,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:10:22,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:10:23,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:10:23,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:10:23,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:10:23,326 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:10:23,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408731057] [2021-11-07 02:10:23,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1408731057] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:10:23,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:10:23,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:10:23,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810505071] [2021-11-07 02:10:23,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:10:23,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:10:23,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:10:23,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:10:23,329 INFO L87 Difference]: Start difference. First operand 55703 states and 103099 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:28,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:10:28,467 INFO L93 Difference]: Finished difference Result 156983 states and 290517 transitions. [2021-11-07 02:10:28,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:10:28,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-11-07 02:10:28,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:10:28,707 INFO L225 Difference]: With dead ends: 156983 [2021-11-07 02:10:28,707 INFO L226 Difference]: Without dead ends: 106291 [2021-11-07 02:10:28,757 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:10:28,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106291 states. [2021-11-07 02:10:33,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106291 to 106276. [2021-11-07 02:10:34,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106276 states, 106271 states have (on average 1.8499402471041018) internal successors, (196595), 106275 states have internal predecessors, (196595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:34,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106276 states to 106276 states and 196595 transitions. [2021-11-07 02:10:34,325 INFO L78 Accepts]: Start accepts. Automaton has 106276 states and 196595 transitions. Word has length 66 [2021-11-07 02:10:34,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:10:34,325 INFO L470 AbstractCegarLoop]: Abstraction has 106276 states and 196595 transitions. [2021-11-07 02:10:34,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:34,325 INFO L276 IsEmpty]: Start isEmpty. Operand 106276 states and 196595 transitions. [2021-11-07 02:10:34,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 02:10:34,328 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:10:34,328 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:10:34,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 02:10:34,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:10:34,529 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 02:10:34,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:10:34,530 INFO L85 PathProgramCache]: Analyzing trace with hash 22187193, now seen corresponding path program 1 times [2021-11-07 02:10:34,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:10:34,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [940953144] [2021-11-07 02:10:34,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:10:34,531 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:10:34,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:10:34,533 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:10:34,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfb8346-8a2e-410d-8fd2-9b6a240fda90/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 02:10:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:10:35,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:10:35,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:10:35,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:10:35,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:10:35,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:10:35,697 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:10:35,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [940953144] [2021-11-07 02:10:35,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [940953144] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:10:35,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:10:35,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:10:35,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964856632] [2021-11-07 02:10:35,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:10:35,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:10:35,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:10:35,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:10:35,700 INFO L87 Difference]: Start difference. First operand 106276 states and 196595 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 2 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)