./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE --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 87e1d1b45ecae6206db87e264fd33705b608c5376aceaefe9ff79eccaaf25b96 ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE --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 87e1d1b45ecae6206db87e264fd33705b608c5376aceaefe9ff79eccaaf25b96 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:51:27,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:51:27,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:51:27,987 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:51:27,988 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:51:27,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:51:27,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:51:27,995 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:51:27,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:51:27,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:51:28,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:51:28,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:51:28,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:51:28,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:51:28,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:51:28,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:51:28,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:51:28,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:51:28,015 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:51:28,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:51:28,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:51:28,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:51:28,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:51:28,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:51:28,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:51:28,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:51:28,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:51:28,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:51:28,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:51:28,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:51:28,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:51:28,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:51:28,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:51:28,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:51:28,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:51:28,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:51:28,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:51:28,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:51:28,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:51:28,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:51:28,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:51:28,053 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 09:51:28,111 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:51:28,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:51:28,114 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:51:28,114 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:51:28,114 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:51:28,115 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:51:28,115 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 09:51:28,115 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:51:28,123 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:51:28,123 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 09:51:28,125 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 09:51:28,125 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:51:28,126 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 09:51:28,126 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 09:51:28,126 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 09:51:28,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:51:28,128 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:51:28,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 09:51:28,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:51:28,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:51:28,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:51:28,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:51:28,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:51:28,129 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:51:28,130 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:51:28,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:51:28,130 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:51:28,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:51:28,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:51:28,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:51:28,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:51:28,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:51:28,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:51:28,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:51:28,133 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 09:51:28,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 09:51:28,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:51:28,134 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:51:28,134 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:51:28,134 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_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87e1d1b45ecae6206db87e264fd33705b608c5376aceaefe9ff79eccaaf25b96 [2021-10-24 09:51:28,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:51:28,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:51:28,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:51:28,517 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:51:28,518 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:51:28,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c [2021-10-24 09:51:28,616 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/data/b0ec37956/377e0eb05d964d5790cd518755025205/FLAG66a2d3558 [2021-10-24 09:51:29,255 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:51:29,263 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c [2021-10-24 09:51:29,286 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/data/b0ec37956/377e0eb05d964d5790cd518755025205/FLAG66a2d3558 [2021-10-24 09:51:29,555 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/data/b0ec37956/377e0eb05d964d5790cd518755025205 [2021-10-24 09:51:29,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:51:29,562 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:51:29,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:51:29,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:51:29,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:51:29,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:51:29" (1/1) ... [2021-10-24 09:51:29,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d9e7603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:29, skipping insertion in model container [2021-10-24 09:51:29,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:51:29" (1/1) ... [2021-10-24 09:51:29,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:51:29,638 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:51:29,936 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_45d36423-b52e-4616-981a-6e695ef640b4/sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c[15496,15509] [2021-10-24 09:51:29,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:51:29,967 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-24 09:51:29,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2d9ce384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:29, skipping insertion in model container [2021-10-24 09:51:29,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:51:29,969 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-24 09:51:29,972 INFO L168 Benchmark]: Toolchain (without parser) took 408.02 ms. Allocated memory was 104.9 MB in the beginning and 138.4 MB in the end (delta: 33.6 MB). Free memory was 76.4 MB in the beginning and 109.8 MB in the end (delta: -33.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 09:51:29,973 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 104.9 MB. Free memory is still 57.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:51:29,974 INFO L168 Benchmark]: CACSL2BoogieTranslator took 401.20 ms. Allocated memory was 104.9 MB in the beginning and 138.4 MB in the end (delta: 33.6 MB). Free memory was 76.2 MB in the beginning and 109.8 MB in the end (delta: -33.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 09:51:29,976 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 104.9 MB. Free memory is still 57.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 401.20 ms. Allocated memory was 104.9 MB in the beginning and 138.4 MB in the end (delta: 33.6 MB). Free memory was 76.2 MB in the beginning and 109.8 MB in the end (delta: -33.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 116]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:51:32,585 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:51:32,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:51:32,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:51:32,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:51:32,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:51:32,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:51:32,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:51:32,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:51:32,629 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:51:32,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:51:32,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:51:32,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:51:32,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:51:32,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:51:32,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:51:32,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:51:32,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:51:32,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:51:32,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:51:32,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:51:32,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:51:32,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:51:32,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:51:32,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:51:32,667 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:51:32,667 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:51:32,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:51:32,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:51:32,678 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:51:32,678 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:51:32,679 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:51:32,680 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:51:32,681 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:51:32,683 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:51:32,684 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:51:32,686 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:51:32,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:51:32,687 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:51:32,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:51:32,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:51:32,691 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-24 09:51:32,751 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:51:32,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:51:32,753 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:51:32,753 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:51:32,753 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:51:32,754 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:51:32,754 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:51:32,754 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:51:32,754 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:51:32,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:51:32,758 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:51:32,758 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:51:32,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:51:32,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:51:32,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:51:32,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:51:32,759 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:51:32,760 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 09:51:32,760 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 09:51:32,760 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:51:32,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:51:32,761 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:51:32,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:51:32,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:51:32,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 09:51:32,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:51:32,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:51:32,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:51:32,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:51:32,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:51:32,763 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 09:51:32,764 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 09:51:32,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:51:32,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:51:32,765 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:51:32,765 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_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87e1d1b45ecae6206db87e264fd33705b608c5376aceaefe9ff79eccaaf25b96 [2021-10-24 09:51:33,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:51:33,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:51:33,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:51:33,191 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:51:33,192 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:51:33,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c [2021-10-24 09:51:33,277 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/data/865895ca3/9b05dd73ae904f5ab050942ccada8454/FLAG3f3ec2fcb [2021-10-24 09:51:33,883 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:51:33,883 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c [2021-10-24 09:51:33,899 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/data/865895ca3/9b05dd73ae904f5ab050942ccada8454/FLAG3f3ec2fcb [2021-10-24 09:51:34,149 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/data/865895ca3/9b05dd73ae904f5ab050942ccada8454 [2021-10-24 09:51:34,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:51:34,155 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:51:34,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:51:34,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:51:34,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:51:34,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:51:34" (1/1) ... [2021-10-24 09:51:34,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@490d9c0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:34, skipping insertion in model container [2021-10-24 09:51:34,166 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:51:34" (1/1) ... [2021-10-24 09:51:34,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:51:34,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:51:34,582 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_45d36423-b52e-4616-981a-6e695ef640b4/sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c[15496,15509] [2021-10-24 09:51:34,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:51:34,678 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-24 09:51:34,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:51:34,834 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_45d36423-b52e-4616-981a-6e695ef640b4/sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c[15496,15509] [2021-10-24 09:51:34,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:51:34,873 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:51:34,981 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_45d36423-b52e-4616-981a-6e695ef640b4/sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c[15496,15509] [2021-10-24 09:51:34,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:51:35,036 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:51:35,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:35 WrapperNode [2021-10-24 09:51:35,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:51:35,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:51:35,039 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:51:35,039 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:51:35,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:35" (1/1) ... [2021-10-24 09:51:35,081 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:35" (1/1) ... [2021-10-24 09:51:35,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:51:35,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:51:35,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:51:35,179 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:51:35,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:35" (1/1) ... [2021-10-24 09:51:35,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:35" (1/1) ... [2021-10-24 09:51:35,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:35" (1/1) ... [2021-10-24 09:51:35,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:35" (1/1) ... [2021-10-24 09:51:35,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:35" (1/1) ... [2021-10-24 09:51:35,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:35" (1/1) ... [2021-10-24 09:51:35,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:35" (1/1) ... [2021-10-24 09:51:35,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:51:35,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:51:35,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:51:35,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:51:35,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:35" (1/1) ... [2021-10-24 09:51:35,293 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:51:35,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:51:35,322 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:51:35,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:51:35,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:51:35,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 09:51:35,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:51:35,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:51:38,481 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:51:38,482 INFO L299 CfgBuilder]: Removed 160 assume(true) statements. [2021-10-24 09:51:38,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:51:38 BoogieIcfgContainer [2021-10-24 09:51:38,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:51:38,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:51:38,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:51:38,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:51:38,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:51:34" (1/3) ... [2021-10-24 09:51:38,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1943b1fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:51:38, skipping insertion in model container [2021-10-24 09:51:38,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:35" (2/3) ... [2021-10-24 09:51:38,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1943b1fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:51:38, skipping insertion in model container [2021-10-24 09:51:38,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:51:38" (3/3) ... [2021-10-24 09:51:38,496 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product39.cil.c [2021-10-24 09:51:38,503 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:51:38,503 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-24 09:51:38,572 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:51:38,584 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 09:51:38,584 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-24 09:51:38,613 INFO L276 IsEmpty]: Start isEmpty. Operand has 113 states, 109 states have (on average 1.5688073394495412) internal successors, (171), 112 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:51:38,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-24 09:51:38,638 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:51:38,639 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:51:38,640 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:51:38,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:51:38,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1221872895, now seen corresponding path program 1 times [2021-10-24 09:51:38,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:51:38,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [181353219] [2021-10-24 09:51:38,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:51:38,680 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:51:38,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:51:38,685 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:51:38,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 09:51:38,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:51:39,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-24 09:51:39,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:51:39,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:51:39,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:51:39,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:51:39,187 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:51:39,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [181353219] [2021-10-24 09:51:39,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [181353219] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:51:39,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:51:39,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 09:51:39,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233286605] [2021-10-24 09:51:39,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 09:51:39,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:51:39,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 09:51:39,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 09:51:39,220 INFO L87 Difference]: Start difference. First operand has 113 states, 109 states have (on average 1.5688073394495412) internal successors, (171), 112 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:51:39,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:51:39,251 INFO L93 Difference]: Finished difference Result 220 states and 335 transitions. [2021-10-24 09:51:39,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 09:51:39,253 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-24 09:51:39,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:51:39,269 INFO L225 Difference]: With dead ends: 220 [2021-10-24 09:51:39,269 INFO L226 Difference]: Without dead ends: 109 [2021-10-24 09:51:39,273 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 09:51:39,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-24 09:51:39,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-10-24 09:51:39,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 106 states have (on average 1.5) internal successors, (159), 108 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:51:39,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 159 transitions. [2021-10-24 09:51:39,318 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 159 transitions. Word has length 16 [2021-10-24 09:51:39,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:51:39,319 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 159 transitions. [2021-10-24 09:51:39,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:51:39,320 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 159 transitions. [2021-10-24 09:51:39,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-24 09:51:39,321 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:51:39,321 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:51:39,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-24 09:51:39,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:51:39,535 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:51:39,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:51:39,537 INFO L82 PathProgramCache]: Analyzing trace with hash 175115998, now seen corresponding path program 1 times [2021-10-24 09:51:39,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:51:39,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456689384] [2021-10-24 09:51:39,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:51:39,539 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:51:39,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:51:39,540 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:51:39,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 09:51:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:51:39,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 09:51:39,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:51:39,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:51:39,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:51:39,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:51:39,942 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:51:39,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456689384] [2021-10-24 09:51:39,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456689384] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:51:39,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:51:39,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 09:51:39,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597815564] [2021-10-24 09:51:39,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:51:39,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:51:39,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:51:39,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:51:39,956 INFO L87 Difference]: Start difference. First operand 109 states and 159 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:51:39,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:51:39,994 INFO L93 Difference]: Finished difference Result 109 states and 159 transitions. [2021-10-24 09:51:39,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:51:39,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-24 09:51:39,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:51:40,004 INFO L225 Difference]: With dead ends: 109 [2021-10-24 09:51:40,004 INFO L226 Difference]: Without dead ends: 47 [2021-10-24 09:51:40,006 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:51:40,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-24 09:51:40,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-10-24 09:51:40,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.4782608695652173) internal successors, (68), 46 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:51:40,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2021-10-24 09:51:40,024 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 17 [2021-10-24 09:51:40,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:51:40,027 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2021-10-24 09:51:40,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:51:40,028 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2021-10-24 09:51:40,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-24 09:51:40,030 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:51:40,034 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:51:40,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 09:51:40,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:51:40,235 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:51:40,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:51:40,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1744081540, now seen corresponding path program 1 times [2021-10-24 09:51:40,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:51:40,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1696723544] [2021-10-24 09:51:40,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:51:40,237 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:51:40,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:51:40,238 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:51:40,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 09:51:40,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:51:40,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 09:51:40,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:51:40,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:51:40,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:51:40,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:51:40,707 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:51:40,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1696723544] [2021-10-24 09:51:40,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1696723544] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:51:40,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:51:40,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-24 09:51:40,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275666576] [2021-10-24 09:51:40,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:51:40,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:51:40,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:51:40,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:51:40,710 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 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) [2021-10-24 09:51:40,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:51:40,754 INFO L93 Difference]: Finished difference Result 152 states and 226 transitions. [2021-10-24 09:51:40,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:51:40,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 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 22 [2021-10-24 09:51:40,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:51:40,756 INFO L225 Difference]: With dead ends: 152 [2021-10-24 09:51:40,758 INFO L226 Difference]: Without dead ends: 111 [2021-10-24 09:51:40,759 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:51:40,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-24 09:51:40,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 66. [2021-10-24 09:51:40,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.4923076923076923) internal successors, (97), 65 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:51:40,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 97 transitions. [2021-10-24 09:51:40,781 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 97 transitions. Word has length 22 [2021-10-24 09:51:40,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:51:40,782 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 97 transitions. [2021-10-24 09:51:40,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 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) [2021-10-24 09:51:40,783 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 97 transitions. [2021-10-24 09:51:40,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-24 09:51:40,786 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:51:40,786 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:51:40,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 09:51:41,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:51:41,010 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:51:41,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:51:41,011 INFO L82 PathProgramCache]: Analyzing trace with hash -595366227, now seen corresponding path program 1 times [2021-10-24 09:51:41,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:51:41,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [34927831] [2021-10-24 09:51:41,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:51:41,012 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:51:41,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:51:41,013 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:51:41,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-24 09:51:41,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:51:41,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 09:51:41,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:51:41,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:51:41,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:51:41,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:51:41,388 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:51:41,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [34927831] [2021-10-24 09:51:41,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [34927831] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:51:41,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:51:41,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 09:51:41,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447752057] [2021-10-24 09:51:41,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:51:41,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:51:41,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:51:41,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:51:41,393 INFO L87 Difference]: Start difference. First operand 66 states and 97 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:51:41,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:51:41,476 INFO L93 Difference]: Finished difference Result 147 states and 218 transitions. [2021-10-24 09:51:41,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:51:41,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-24 09:51:41,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:51:41,478 INFO L225 Difference]: With dead ends: 147 [2021-10-24 09:51:41,478 INFO L226 Difference]: Without dead ends: 87 [2021-10-24 09:51:41,483 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:51:41,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-10-24 09:51:41,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2021-10-24 09:51:41,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.4404761904761905) internal successors, (121), 84 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:51:41,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 121 transitions. [2021-10-24 09:51:41,514 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 121 transitions. Word has length 24 [2021-10-24 09:51:41,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:51:41,515 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 121 transitions. [2021-10-24 09:51:41,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:51:41,515 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 121 transitions. [2021-10-24 09:51:41,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-24 09:51:41,518 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:51:41,518 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:51:41,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-24 09:51:41,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:51:41,739 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:51:41,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:51:41,739 INFO L82 PathProgramCache]: Analyzing trace with hash 566175321, now seen corresponding path program 1 times [2021-10-24 09:51:41,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:51:41,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813832899] [2021-10-24 09:51:41,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:51:41,741 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:51:41,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:51:41,742 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:51:41,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-24 09:51:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:51:41,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 09:51:41,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:51:42,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:51:42,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:51:42,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:51:42,279 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:51:42,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813832899] [2021-10-24 09:51:42,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [813832899] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:51:42,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:51:42,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-24 09:51:42,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734434806] [2021-10-24 09:51:42,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 09:51:42,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:51:42,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 09:51:42,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-24 09:51:42,282 INFO L87 Difference]: Start difference. First operand 85 states and 121 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:51:42,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:51:42,676 INFO L93 Difference]: Finished difference Result 608 states and 892 transitions. [2021-10-24 09:51:42,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-24 09:51:42,677 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-24 09:51:42,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:51:42,684 INFO L225 Difference]: With dead ends: 608 [2021-10-24 09:51:42,684 INFO L226 Difference]: Without dead ends: 529 [2021-10-24 09:51:42,686 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 159.8ms TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-10-24 09:51:42,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-10-24 09:51:42,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 212. [2021-10-24 09:51:42,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 1.4028436018957346) internal successors, (296), 211 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:51:42,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 296 transitions. [2021-10-24 09:51:42,749 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 296 transitions. Word has length 25 [2021-10-24 09:51:42,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:51:42,750 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 296 transitions. [2021-10-24 09:51:42,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:51:42,750 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 296 transitions. [2021-10-24 09:51:42,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-24 09:51:42,758 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:51:42,758 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:51:42,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-24 09:51:42,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:51:42,973 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:51:42,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:51:42,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1054930310, now seen corresponding path program 1 times [2021-10-24 09:51:42,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:51:42,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476411150] [2021-10-24 09:51:42,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:51:42,975 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:51:42,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:51:42,976 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:51:42,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-24 09:51:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:51:43,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 09:51:43,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:51:43,450 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:51:43,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:51:43,666 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:51:43,666 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:51:43,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [476411150] [2021-10-24 09:51:43,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [476411150] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:51:43,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [145050004] [2021-10-24 09:51:43,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:51:43,667 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 09:51:43,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 09:51:43,670 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 09:51:43,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-24 09:51:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:51:43,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 09:51:43,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:51:44,091 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-24 09:51:44,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:51:44,213 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-24 09:51:44,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [145050004] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:51:44,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-24 09:51:44,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [3, 3] total 9 [2021-10-24 09:51:44,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297145209] [2021-10-24 09:51:44,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 09:51:44,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:51:44,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 09:51:44,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-24 09:51:44,218 INFO L87 Difference]: Start difference. First operand 212 states and 296 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:51:44,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:51:44,474 INFO L93 Difference]: Finished difference Result 498 states and 707 transitions. [2021-10-24 09:51:44,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-24 09:51:44,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-24 09:51:44,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:51:44,480 INFO L225 Difference]: With dead ends: 498 [2021-10-24 09:51:44,484 INFO L226 Difference]: Without dead ends: 496 [2021-10-24 09:51:44,486 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 108.7ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-24 09:51:44,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-10-24 09:51:44,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 212. [2021-10-24 09:51:44,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 1.3933649289099526) internal successors, (294), 211 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:51:44,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 294 transitions. [2021-10-24 09:51:44,526 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 294 transitions. Word has length 40 [2021-10-24 09:51:44,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:51:44,527 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 294 transitions. [2021-10-24 09:51:44,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:51:44,528 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 294 transitions. [2021-10-24 09:51:44,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-24 09:51:44,531 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:51:44,532 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:51:44,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-24 09:51:44,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-10-24 09:51:44,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt [2021-10-24 09:51:44,945 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:51:44,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:51:44,946 INFO L82 PathProgramCache]: Analyzing trace with hash -411211596, now seen corresponding path program 1 times [2021-10-24 09:51:44,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:51:44,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1523585599] [2021-10-24 09:51:44,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:51:44,947 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:51:44,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:51:44,948 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:51:45,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-24 09:51:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:51:45,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 09:51:45,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:51:45,478 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:51:45,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:51:45,696 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:51:45,697 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:51:45,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1523585599] [2021-10-24 09:51:45,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1523585599] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:51:45,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1116635480] [2021-10-24 09:51:45,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:51:45,698 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 09:51:45,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 09:51:45,699 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 09:51:45,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-10-24 09:51:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:51:46,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 09:51:46,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:51:46,309 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:51:46,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:51:46,458 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:51:46,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1116635480] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:51:46,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-24 09:51:46,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3, 3] total 7 [2021-10-24 09:51:46,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004761750] [2021-10-24 09:51:46,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:51:46,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:51:46,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:51:46,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-24 09:51:46,461 INFO L87 Difference]: Start difference. First operand 212 states and 294 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:51:48,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:51:48,051 INFO L93 Difference]: Finished difference Result 424 states and 588 transitions. [2021-10-24 09:51:48,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:51:48,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-10-24 09:51:48,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:51:48,053 INFO L225 Difference]: With dead ends: 424 [2021-10-24 09:51:48,054 INFO L226 Difference]: Without dead ends: 154 [2021-10-24 09:51:48,055 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 36.2ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-24 09:51:48,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-24 09:51:48,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-10-24 09:51:48,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.3529411764705883) internal successors, (207), 153 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:51:48,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 207 transitions. [2021-10-24 09:51:48,072 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 207 transitions. Word has length 48 [2021-10-24 09:51:48,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:51:48,072 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 207 transitions. [2021-10-24 09:51:48,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:51:48,073 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 207 transitions. [2021-10-24 09:51:48,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-24 09:51:48,074 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:51:48,074 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:51:48,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-24 09:51:48,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2021-10-24 09:51:48,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt [2021-10-24 09:51:48,480 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:51:48,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:51:48,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1761073962, now seen corresponding path program 1 times [2021-10-24 09:51:48,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:51:48,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2061397916] [2021-10-24 09:51:48,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:51:48,481 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:51:48,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:51:48,482 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:51:48,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-24 09:51:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:51:48,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 09:51:48,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:51:48,925 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-24 09:51:48,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:51:49,045 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-24 09:51:49,046 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:51:49,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2061397916] [2021-10-24 09:51:49,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2061397916] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:51:49,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:51:49,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-24 09:51:49,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986539681] [2021-10-24 09:51:49,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 09:51:49,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:51:49,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 09:51:49,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:51:49,048 INFO L87 Difference]: Start difference. First operand 154 states and 207 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:51:49,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:51:49,146 INFO L93 Difference]: Finished difference Result 421 states and 560 transitions. [2021-10-24 09:51:49,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 09:51:49,146 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-10-24 09:51:49,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:51:49,148 INFO L225 Difference]: With dead ends: 421 [2021-10-24 09:51:49,149 INFO L226 Difference]: Without dead ends: 273 [2021-10-24 09:51:49,150 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 09:51:49,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-10-24 09:51:49,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 169. [2021-10-24 09:51:49,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.3214285714285714) internal successors, (222), 168 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:51:49,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 222 transitions. [2021-10-24 09:51:49,172 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 222 transitions. Word has length 49 [2021-10-24 09:51:49,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:51:49,175 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 222 transitions. [2021-10-24 09:51:49,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:51:49,175 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 222 transitions. [2021-10-24 09:51:49,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-24 09:51:49,177 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:51:49,177 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:51:49,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-24 09:51:49,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:51:49,389 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:51:49,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:51:49,390 INFO L82 PathProgramCache]: Analyzing trace with hash -374870568, now seen corresponding path program 1 times [2021-10-24 09:51:49,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:51:49,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624720229] [2021-10-24 09:51:49,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:51:49,391 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:51:49,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:51:49,392 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:51:49,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-24 09:51:49,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:51:49,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 09:51:49,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:51:49,825 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-24 09:51:49,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:51:49,939 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-24 09:51:49,939 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:51:49,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624720229] [2021-10-24 09:51:49,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624720229] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:51:49,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:51:49,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-24 09:51:49,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402675567] [2021-10-24 09:51:49,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 09:51:49,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:51:49,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 09:51:49,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-24 09:51:49,942 INFO L87 Difference]: Start difference. First operand 169 states and 222 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:51:50,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:51:50,008 INFO L93 Difference]: Finished difference Result 397 states and 519 transitions. [2021-10-24 09:51:50,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 09:51:50,008 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-10-24 09:51:50,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:51:50,010 INFO L225 Difference]: With dead ends: 397 [2021-10-24 09:51:50,010 INFO L226 Difference]: Without dead ends: 234 [2021-10-24 09:51:50,011 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 23.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 09:51:50,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-10-24 09:51:50,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 148. [2021-10-24 09:51:50,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.2925170068027212) internal successors, (190), 147 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:51:50,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 190 transitions. [2021-10-24 09:51:50,033 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 190 transitions. Word has length 49 [2021-10-24 09:51:50,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:51:50,034 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 190 transitions. [2021-10-24 09:51:50,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:51:50,034 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 190 transitions. [2021-10-24 09:51:50,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-24 09:51:50,035 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:51:50,036 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:51:50,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-24 09:51:50,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:51:50,248 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:51:50,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:51:50,249 INFO L82 PathProgramCache]: Analyzing trace with hash -2038322788, now seen corresponding path program 1 times [2021-10-24 09:51:50,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:51:50,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1325826666] [2021-10-24 09:51:50,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:51:50,251 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:51:50,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:51:50,252 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:51:50,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-24 09:51:50,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:51:50,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 09:51:50,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:51:50,782 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-24 09:51:50,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:51:51,014 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-24 09:51:51,014 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:51:51,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1325826666] [2021-10-24 09:51:51,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1325826666] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:51:51,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1354009080] [2021-10-24 09:51:51,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:51:51,015 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 09:51:51,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 09:51:51,016 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 09:51:51,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-10-24 09:51:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:51:51,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 09:51:51,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:51:51,719 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-24 09:51:51,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:51:51,904 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-24 09:51:51,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1354009080] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:51:51,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5062989] [2021-10-24 09:51:51,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:51:51,905 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:51:51,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:51:51,913 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:51:51,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-24 09:51:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:51:52,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 09:51:52,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:51:52,513 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-24 09:51:52,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:51:52,691 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-24 09:51:52,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5062989] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:51:52,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-24 09:51:52,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2021-10-24 09:51:52,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906761148] [2021-10-24 09:51:52,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-24 09:51:52,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:51:52,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-24 09:51:52,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-24 09:51:52,693 INFO L87 Difference]: Start difference. First operand 148 states and 190 transitions. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 9 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) [2021-10-24 09:51:55,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:51:55,184 INFO L93 Difference]: Finished difference Result 959 states and 1265 transitions. [2021-10-24 09:51:55,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-24 09:51:55,185 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 9 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 50 [2021-10-24 09:51:55,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:51:55,191 INFO L225 Difference]: With dead ends: 959 [2021-10-24 09:51:55,191 INFO L226 Difference]: Without dead ends: 841 [2021-10-24 09:51:55,192 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 359.8ms TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2021-10-24 09:51:55,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2021-10-24 09:51:55,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 264. [2021-10-24 09:51:55,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 1.3155893536121672) internal successors, (346), 263 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:51:55,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 346 transitions. [2021-10-24 09:51:55,240 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 346 transitions. Word has length 50 [2021-10-24 09:51:55,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:51:55,241 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 346 transitions. [2021-10-24 09:51:55,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 9 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) [2021-10-24 09:51:55,241 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 346 transitions. [2021-10-24 09:51:55,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-24 09:51:55,242 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:51:55,242 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:51:55,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-10-24 09:51:55,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-10-24 09:51:55,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-24 09:51:55,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:51:55,856 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:51:55,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:51:55,856 INFO L82 PathProgramCache]: Analyzing trace with hash 564554040, now seen corresponding path program 2 times [2021-10-24 09:51:55,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:51:55,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815178534] [2021-10-24 09:51:55,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-24 09:51:55,857 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:51:55,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:51:55,858 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:51:55,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-24 09:51:57,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-24 09:51:57,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-10-24 09:51:57,639 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 09:51:58,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:51:58,992 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-24 09:51:58,992 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 09:51:58,993 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:51:58,995 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:51:58,996 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:51:59,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-24 09:51:59,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:51:59,226 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 09:51:59,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:51:59 BoogieIcfgContainer [2021-10-24 09:51:59,424 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 09:51:59,424 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 09:51:59,425 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 09:51:59,425 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 09:51:59,425 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:51:38" (3/4) ... [2021-10-24 09:51:59,427 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 09:51:59,564 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 09:51:59,564 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 09:51:59,566 INFO L168 Benchmark]: Toolchain (without parser) took 25410.07 ms. Allocated memory was 52.4 MB in the beginning and 100.7 MB in the end (delta: 48.2 MB). Free memory was 28.6 MB in the beginning and 72.1 MB in the end (delta: -43.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 16.1 GB. [2021-10-24 09:51:59,567 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 52.4 MB. Free memory was 34.4 MB in the beginning and 34.4 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:51:59,567 INFO L168 Benchmark]: CACSL2BoogieTranslator took 880.33 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 28.4 MB in the beginning and 33.0 MB in the end (delta: -4.6 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2021-10-24 09:51:59,568 INFO L168 Benchmark]: Boogie Procedure Inliner took 138.53 ms. Allocated memory is still 62.9 MB. Free memory was 33.0 MB in the beginning and 44.1 MB in the end (delta: -11.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 09:51:59,568 INFO L168 Benchmark]: Boogie Preprocessor took 102.13 ms. Allocated memory is still 62.9 MB. Free memory was 44.1 MB in the beginning and 41.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:51:59,568 INFO L168 Benchmark]: RCFGBuilder took 3204.27 ms. Allocated memory was 62.9 MB in the beginning and 83.9 MB in the end (delta: 21.0 MB). Free memory was 41.5 MB in the beginning and 55.9 MB in the end (delta: -14.4 MB). Peak memory consumption was 19.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:51:59,569 INFO L168 Benchmark]: TraceAbstraction took 20936.59 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 55.3 MB in the beginning and 51.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 53.0 MB. Max. memory is 16.1 GB. [2021-10-24 09:51:59,569 INFO L168 Benchmark]: Witness Printer took 140.10 ms. Allocated memory is still 100.7 MB. Free memory was 51.9 MB in the beginning and 72.1 MB in the end (delta: -20.2 MB). Peak memory consumption was 30.9 MB. Max. memory is 16.1 GB. [2021-10-24 09:51:59,572 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 52.4 MB. Free memory was 34.4 MB in the beginning and 34.4 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 880.33 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 28.4 MB in the beginning and 33.0 MB in the end (delta: -4.6 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 138.53 ms. Allocated memory is still 62.9 MB. Free memory was 33.0 MB in the beginning and 44.1 MB in the end (delta: -11.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 102.13 ms. Allocated memory is still 62.9 MB. Free memory was 44.1 MB in the beginning and 41.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3204.27 ms. Allocated memory was 62.9 MB in the beginning and 83.9 MB in the end (delta: 21.0 MB). Free memory was 41.5 MB in the beginning and 55.9 MB in the end (delta: -14.4 MB). Peak memory consumption was 19.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 20936.59 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 55.3 MB in the beginning and 51.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 53.0 MB. Max. memory is 16.1 GB. * Witness Printer took 140.10 ms. Allocated memory is still 100.7 MB. Free memory was 51.9 MB in the beginning and 72.1 MB in the end (delta: -20.2 MB). Peak memory consumption was 30.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 732]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L257] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L534] int pumpRunning = 0; [L535] int systemActive = 1; [L738] int waterLevel = 1; [L739] int methaneLevelCritical = 0; [L832] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L905] int retValue_acc ; [L906] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L79] int retValue_acc ; [L82] retValue_acc = 1 [L83] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L912] tmp = valid_product() [L914] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L460] int splverifierCounter ; [L461] int tmp ; [L462] int tmp___0 ; [L463] int tmp___1 ; [L464] int tmp___2 ; [L467] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L469] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L471] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L477] tmp = __VERIFIER_nondet_int() [L479] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L756] COND TRUE waterLevel < 2 [L757] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L487] tmp___0 = __VERIFIER_nondet_int() [L489] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L497] tmp___2 = __VERIFIER_nondet_int() [L499] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L542] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L549] COND TRUE \read(systemActive) [L597] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L600] COND FALSE !(\read(pumpRunning)) [L571] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L574] COND TRUE ! pumpRunning [L694] int retValue_acc ; [L695] int tmp ; [L696] int tmp___0 ; [L818] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L821] COND FALSE !(waterLevel < 2) [L825] retValue_acc = 0 [L826] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L700] tmp = isHighWaterSensorDry() [L702] COND FALSE !(\read(tmp)) [L705] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L707] retValue_acc = tmp___0 [L708] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L576] tmp = isHighWaterLevel() [L578] COND TRUE \read(tmp) [L625] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L929] int tmp ; [L930] int tmp___0 ; [L809] int retValue_acc ; [L812] retValue_acc = waterLevel [L813] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L934] tmp = getWaterLevel() [L936] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L469] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L471] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L477] tmp = __VERIFIER_nondet_int() [L479] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L487] tmp___0 = __VERIFIER_nondet_int() [L489] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L497] tmp___2 = __VERIFIER_nondet_int() [L499] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L542] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L744] COND TRUE waterLevel > 0 [L745] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L549] COND TRUE \read(systemActive) [L597] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L600] COND TRUE \read(pumpRunning) [L638] int retValue_acc ; [L777] int retValue_acc ; [L780] retValue_acc = methaneLevelCritical [L781] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L642] retValue_acc = isMethaneLevelCritical() [L644] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L602] tmp = isMethaneAlarm() [L604] COND FALSE !(\read(tmp)) [L571] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L574] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L929] int tmp ; [L930] int tmp___0 ; [L809] int retValue_acc ; [L812] retValue_acc = waterLevel [L813] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L934] tmp = getWaterLevel() [L936] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L469] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L471] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L477] tmp = __VERIFIER_nondet_int() [L479] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L487] tmp___0 = __VERIFIER_nondet_int() [L489] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L497] tmp___2 = __VERIFIER_nondet_int() [L499] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L542] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L744] COND TRUE waterLevel > 0 [L745] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L549] COND TRUE \read(systemActive) [L597] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L600] COND TRUE \read(pumpRunning) [L638] int retValue_acc ; [L777] int retValue_acc ; [L780] retValue_acc = methaneLevelCritical [L781] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L642] retValue_acc = isMethaneLevelCritical() [L644] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L602] tmp = isMethaneAlarm() [L604] COND FALSE !(\read(tmp)) [L571] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L574] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L929] int tmp ; [L930] int tmp___0 ; [L809] int retValue_acc ; [L812] retValue_acc = waterLevel [L813] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L934] tmp = getWaterLevel() [L936] COND TRUE tmp == 0 [L649] int retValue_acc ; [L652] retValue_acc = pumpRunning [L653] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L938] tmp___0 = isPumpRunning() [L940] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L732] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - UnprovableResult [Line: 732]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 113 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 20659.0ms, OverallIterations: 11, TraceHistogramMax: 3, EmptinessCheckTime: 58.4ms, AutomataDifference: 5215.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 20.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1025 SDtfs, 2057 SDslu, 2339 SDs, 0 SdLazy, 454 SolverSat, 109 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3842.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1067 GetRequests, 996 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 745.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=264occurred in iteration=10, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 313.4ms AutomataMinimizationTime, 10 MinimizatonAttempts, 1415 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 396.4ms SsaConstructionTime, 3080.9ms SatisfiabilityAnalysisTime, 4298.2ms InterpolantComputationTime, 597 NumberOfCodeBlocks, 597 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1028 ConstructedInterpolants, 0 QuantifiedInterpolants, 2330 SizeOfPredicates, 21 NumberOfNonLiveVariables, 3044 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 28 InterpolantComputations, 18 PerfectInterpolantSequences, 178/252 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-24 09:51:59,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d36423-b52e-4616-981a-6e695ef640b4/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...