./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product36.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_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product36.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dae9a870dcbd894d53325794bcd1e36e0da0523a0c6f117be41bebebda51818a ............................................................................................................................................ 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_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product36.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dae9a870dcbd894d53325794bcd1e36e0da0523a0c6f117be41bebebda51818a ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 05:59:13,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:59:13,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:59:13,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:59:13,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:59:13,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:59:13,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:59:13,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:59:13,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:59:13,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:59:13,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:59:13,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:59:13,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:59:13,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:59:13,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:59:13,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:59:13,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:59:13,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:59:13,667 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:59:13,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:59:13,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:59:13,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:59:13,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:59:13,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:59:13,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:59:13,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:59:13,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:59:13,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:59:13,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:59:13,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:59:13,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:59:13,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:59:13,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:59:13,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:59:13,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:59:13,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:59:13,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:59:13,718 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:59:13,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:59:13,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:59:13,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:59:13,722 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-20 05:59:13,773 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:59:13,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:59:13,775 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:59:13,775 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:59:13,775 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:59:13,776 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:59:13,776 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 05:59:13,776 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:59:13,777 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:59:13,777 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 05:59:13,777 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 05:59:13,777 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:59:13,778 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 05:59:13,778 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 05:59:13,778 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 05:59:13,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:59:13,779 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:59:13,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 05:59:13,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:59:13,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:59:13,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 05:59:13,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:59:13,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 05:59:13,781 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:59:13,782 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:59:13,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 05:59:13,782 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:59:13,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 05:59:13,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:59:13,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:59:13,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:59:13,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:59:13,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:59:13,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 05:59:13,785 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 05:59:13,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 05:59:13,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 05:59:13,785 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:59:13,786 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:59:13,786 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_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dae9a870dcbd894d53325794bcd1e36e0da0523a0c6f117be41bebebda51818a [2021-10-20 05:59:14,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:59:14,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:59:14,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:59:14,207 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:59:14,209 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:59:14,210 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/product-lines/minepump_spec1_product36.cil.c [2021-10-20 05:59:14,287 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/data/e64d405a0/d26448016a014e50a436f26d72a00a63/FLAGebaab2ba1 [2021-10-20 05:59:14,954 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:59:14,955 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/sv-benchmarks/c/product-lines/minepump_spec1_product36.cil.c [2021-10-20 05:59:14,981 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/data/e64d405a0/d26448016a014e50a436f26d72a00a63/FLAGebaab2ba1 [2021-10-20 05:59:15,225 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/data/e64d405a0/d26448016a014e50a436f26d72a00a63 [2021-10-20 05:59:15,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:59:15,229 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:59:15,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:59:15,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:59:15,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:59:15,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:59:15" (1/1) ... [2021-10-20 05:59:15,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b45b5fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:15, skipping insertion in model container [2021-10-20 05:59:15,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:59:15" (1/1) ... [2021-10-20 05:59:15,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:59:15,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:59:15,578 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_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/sv-benchmarks/c/product-lines/minepump_spec1_product36.cil.c[1605,1618] [2021-10-20 05:59:15,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:59:15,747 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-20 05:59:15,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@dee967e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:15, skipping insertion in model container [2021-10-20 05:59:15,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:59:15,749 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-20 05:59:15,752 INFO L168 Benchmark]: Toolchain (without parser) took 520.88 ms. Allocated memory is still 123.7 MB. Free memory was 83.4 MB in the beginning and 93.9 MB in the end (delta: -10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 05:59:15,753 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 123.7 MB. Free memory is still 100.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:59:15,754 INFO L168 Benchmark]: CACSL2BoogieTranslator took 513.83 ms. Allocated memory is still 123.7 MB. Free memory was 83.2 MB in the beginning and 93.9 MB in the end (delta: -10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 05:59:15,756 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 123.7 MB. Free memory is still 100.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 513.83 ms. Allocated memory is still 123.7 MB. Free memory was 83.2 MB in the beginning and 93.9 MB in the end (delta: -10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 479]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 05:59:18,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:59:18,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:59:18,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:59:18,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:59:18,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:59:18,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:59:18,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:59:18,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:59:18,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:59:18,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:59:18,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:59:18,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:59:18,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:59:18,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:59:18,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:59:18,897 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:59:18,899 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:59:18,902 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:59:18,912 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:59:18,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:59:18,916 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:59:18,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:59:18,922 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:59:18,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:59:18,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:59:18,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:59:18,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:59:18,939 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:59:18,941 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:59:18,941 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:59:18,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:59:18,945 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:59:18,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:59:18,948 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:59:18,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:59:18,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:59:18,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:59:18,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:59:18,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:59:18,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:59:18,961 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-20 05:59:19,014 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:59:19,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:59:19,016 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:59:19,017 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:59:19,017 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:59:19,018 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:59:19,018 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:59:19,018 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:59:19,019 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:59:19,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:59:19,022 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:59:19,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:59:19,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:59:19,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 05:59:19,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:59:19,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 05:59:19,025 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:59:19,025 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-20 05:59:19,025 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-20 05:59:19,026 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:59:19,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 05:59:19,027 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:59:19,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 05:59:19,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:59:19,028 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-20 05:59:19,028 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:59:19,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:59:19,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:59:19,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:59:19,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 05:59:19,030 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-20 05:59:19,030 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-20 05:59:19,031 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 05:59:19,031 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:59:19,032 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:59:19,033 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_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dae9a870dcbd894d53325794bcd1e36e0da0523a0c6f117be41bebebda51818a [2021-10-20 05:59:19,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:59:19,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:59:19,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:59:19,615 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:59:19,616 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:59:19,617 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/product-lines/minepump_spec1_product36.cil.c [2021-10-20 05:59:19,728 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/data/5033e220d/93db6130103148c0a111e214b54dafe0/FLAG110b9dec7 [2021-10-20 05:59:20,526 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:59:20,527 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/sv-benchmarks/c/product-lines/minepump_spec1_product36.cil.c [2021-10-20 05:59:20,548 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/data/5033e220d/93db6130103148c0a111e214b54dafe0/FLAG110b9dec7 [2021-10-20 05:59:20,749 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/data/5033e220d/93db6130103148c0a111e214b54dafe0 [2021-10-20 05:59:20,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:59:20,755 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:59:20,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:59:20,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:59:20,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:59:20,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:59:20" (1/1) ... [2021-10-20 05:59:20,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@772017c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:20, skipping insertion in model container [2021-10-20 05:59:20,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:59:20" (1/1) ... [2021-10-20 05:59:20,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:59:20,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:59:21,102 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_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/sv-benchmarks/c/product-lines/minepump_spec1_product36.cil.c[1605,1618] [2021-10-20 05:59:21,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:59:21,491 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-20 05:59:21,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:59:21,527 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_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/sv-benchmarks/c/product-lines/minepump_spec1_product36.cil.c[1605,1618] [2021-10-20 05:59:21,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:59:21,631 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 05:59:21,648 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_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/sv-benchmarks/c/product-lines/minepump_spec1_product36.cil.c[1605,1618] [2021-10-20 05:59:21,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:59:21,763 INFO L208 MainTranslator]: Completed translation [2021-10-20 05:59:21,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:21 WrapperNode [2021-10-20 05:59:21,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:59:21,766 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 05:59:21,766 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 05:59:21,766 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 05:59:21,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:21" (1/1) ... [2021-10-20 05:59:21,801 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:21" (1/1) ... [2021-10-20 05:59:21,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 05:59:21,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 05:59:21,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 05:59:21,849 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 05:59:21,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:21" (1/1) ... [2021-10-20 05:59:21,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:21" (1/1) ... [2021-10-20 05:59:21,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:21" (1/1) ... [2021-10-20 05:59:21,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:21" (1/1) ... [2021-10-20 05:59:21,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:21" (1/1) ... [2021-10-20 05:59:21,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:21" (1/1) ... [2021-10-20 05:59:21,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:21" (1/1) ... [2021-10-20 05:59:21,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 05:59:21,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 05:59:21,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 05:59:21,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 05:59:21,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:21" (1/1) ... [2021-10-20 05:59:21,926 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:59:21,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:59:21,956 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 05:59:21,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 05:59:22,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 05:59:22,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-20 05:59:22,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 05:59:22,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 05:59:24,875 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 05:59:24,876 INFO L299 CfgBuilder]: Removed 102 assume(true) statements. [2021-10-20 05:59:24,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:59:24 BoogieIcfgContainer [2021-10-20 05:59:24,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 05:59:24,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 05:59:24,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 05:59:24,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 05:59:24,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:59:20" (1/3) ... [2021-10-20 05:59:24,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0e7c4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:59:24, skipping insertion in model container [2021-10-20 05:59:24,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:21" (2/3) ... [2021-10-20 05:59:24,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0e7c4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:59:24, skipping insertion in model container [2021-10-20 05:59:24,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:59:24" (3/3) ... [2021-10-20 05:59:24,892 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product36.cil.c [2021-10-20 05:59:24,900 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 05:59:24,900 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-20 05:59:24,976 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 05:59:24,983 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-20 05:59:24,983 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-20 05:59:24,999 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 76 states have (on average 1.5789473684210527) internal successors, (120), 79 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:59:25,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-20 05:59:25,005 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:59:25,006 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:59:25,006 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:59:25,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:59:25,013 INFO L82 PathProgramCache]: Analyzing trace with hash -502845476, now seen corresponding path program 1 times [2021-10-20 05:59:25,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:59:25,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1167693431] [2021-10-20 05:59:25,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:59:25,032 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:59:25,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:59:25,038 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:59:25,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-20 05:59:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:59:25,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-20 05:59:25,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:59:25,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:59:25,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:59:25,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:59:25,587 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:59:25,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1167693431] [2021-10-20 05:59:25,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1167693431] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:59:25,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:59:25,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-20 05:59:25,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369897592] [2021-10-20 05:59:25,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-20 05:59:25,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:59:25,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-20 05:59:25,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-20 05:59:25,625 INFO L87 Difference]: Start difference. First operand has 80 states, 76 states have (on average 1.5789473684210527) internal successors, (120), 79 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:59:25,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:59:25,679 INFO L93 Difference]: Finished difference Result 154 states and 233 transitions. [2021-10-20 05:59:25,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-20 05:59:25,681 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-20 05:59:25,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:59:25,694 INFO L225 Difference]: With dead ends: 154 [2021-10-20 05:59:25,695 INFO L226 Difference]: Without dead ends: 76 [2021-10-20 05:59:25,698 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 [2021-10-20 05:59:25,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-20 05:59:25,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-10-20 05:59:25,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 73 states have (on average 1.4794520547945205) internal successors, (108), 75 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:59:25,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 108 transitions. [2021-10-20 05:59:25,746 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 108 transitions. Word has length 16 [2021-10-20 05:59:25,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:59:25,746 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 108 transitions. [2021-10-20 05:59:25,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:59:25,747 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 108 transitions. [2021-10-20 05:59:25,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-20 05:59:25,749 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:59:25,749 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:59:25,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-20 05:59:25,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:59:25,965 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:59:25,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:59:25,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1549602373, now seen corresponding path program 1 times [2021-10-20 05:59:25,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:59:25,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045891767] [2021-10-20 05:59:25,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:59:25,968 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:59:25,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:59:25,969 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:59:25,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-20 05:59:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:59:26,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-20 05:59:26,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:59:26,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:59:26,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:59:26,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:59:26,536 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:59:26,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045891767] [2021-10-20 05:59:26,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045891767] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:59:26,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:59:26,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-20 05:59:26,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095460915] [2021-10-20 05:59:26,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 05:59:26,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:59:26,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 05:59:26,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:59:26,548 INFO L87 Difference]: Start difference. First operand 76 states and 108 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:59:26,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:59:26,579 INFO L93 Difference]: Finished difference Result 76 states and 108 transitions. [2021-10-20 05:59:26,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:59:26,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-20 05:59:26,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:59:26,586 INFO L225 Difference]: With dead ends: 76 [2021-10-20 05:59:26,586 INFO L226 Difference]: Without dead ends: 36 [2021-10-20 05:59:26,587 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:59:26,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-20 05:59:26,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-20 05:59:26,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.457142857142857) internal successors, (51), 35 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:59:26,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2021-10-20 05:59:26,602 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 51 transitions. Word has length 17 [2021-10-20 05:59:26,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:59:26,602 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 51 transitions. [2021-10-20 05:59:26,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:59:26,603 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 51 transitions. [2021-10-20 05:59:26,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-20 05:59:26,604 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:59:26,604 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:59:26,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-20 05:59:26,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:59:26,826 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:59:26,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:59:26,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1499295122, now seen corresponding path program 1 times [2021-10-20 05:59:26,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:59:26,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046172926] [2021-10-20 05:59:26,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:59:26,828 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:59:26,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:59:26,830 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:59:26,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-20 05:59:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:59:27,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-20 05:59:27,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:59:27,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:59:27,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:59:27,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:59:27,252 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:59:27,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046172926] [2021-10-20 05:59:27,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2046172926] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:59:27,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:59:27,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-20 05:59:27,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212133981] [2021-10-20 05:59:27,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 05:59:27,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:59:27,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 05:59:27,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:59:27,261 INFO L87 Difference]: Start difference. First operand 36 states and 51 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:59:27,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:59:27,353 INFO L93 Difference]: Finished difference Result 119 states and 175 transitions. [2021-10-20 05:59:27,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 05:59:27,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-20 05:59:27,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:59:27,356 INFO L225 Difference]: With dead ends: 119 [2021-10-20 05:59:27,356 INFO L226 Difference]: Without dead ends: 89 [2021-10-20 05:59:27,357 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:59:27,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-10-20 05:59:27,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 55. [2021-10-20 05:59:27,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.4814814814814814) internal successors, (80), 54 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:59:27,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 80 transitions. [2021-10-20 05:59:27,382 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 80 transitions. Word has length 22 [2021-10-20 05:59:27,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:59:27,382 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 80 transitions. [2021-10-20 05:59:27,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:59:27,383 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 80 transitions. [2021-10-20 05:59:27,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-20 05:59:27,384 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:59:27,384 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] [2021-10-20 05:59:27,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-20 05:59:27,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:59:27,586 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:59:27,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:59:27,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1870150441, now seen corresponding path program 1 times [2021-10-20 05:59:27,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:59:27,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476442302] [2021-10-20 05:59:27,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:59:27,591 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:59:27,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:59:27,593 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:59:27,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-20 05:59:27,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:59:27,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-20 05:59:27,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:59:27,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:59:27,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:59:28,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:59:28,000 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:59:28,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [476442302] [2021-10-20 05:59:28,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [476442302] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:59:28,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:59:28,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-20 05:59:28,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910021962] [2021-10-20 05:59:28,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:59:28,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:59:28,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:59:28,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:59:28,003 INFO L87 Difference]: Start difference. First operand 55 states and 80 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:59:28,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:59:28,069 INFO L93 Difference]: Finished difference Result 125 states and 184 transitions. [2021-10-20 05:59:28,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:59:28,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-20 05:59:28,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:59:28,071 INFO L225 Difference]: With dead ends: 125 [2021-10-20 05:59:28,071 INFO L226 Difference]: Without dead ends: 76 [2021-10-20 05:59:28,072 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:59:28,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-20 05:59:28,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2021-10-20 05:59:28,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.4383561643835616) internal successors, (105), 73 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:59:28,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2021-10-20 05:59:28,099 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 23 [2021-10-20 05:59:28,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:59:28,100 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2021-10-20 05:59:28,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:59:28,101 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2021-10-20 05:59:28,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-20 05:59:28,102 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:59:28,103 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] [2021-10-20 05:59:28,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-20 05:59:28,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:59:28,318 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:59:28,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:59:28,319 INFO L82 PathProgramCache]: Analyzing trace with hash 944519591, now seen corresponding path program 1 times [2021-10-20 05:59:28,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:59:28,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968319352] [2021-10-20 05:59:28,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:59:28,320 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:59:28,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:59:28,322 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:59:28,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-20 05:59:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:59:28,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-20 05:59:28,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:59:28,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:59:28,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:59:28,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:59:28,860 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:59:28,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968319352] [2021-10-20 05:59:28,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968319352] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:59:28,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:59:28,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-20 05:59:28,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724183563] [2021-10-20 05:59:28,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 05:59:28,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:59:28,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 05:59:28,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:59:28,872 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:59:29,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:59:29,005 INFO L93 Difference]: Finished difference Result 354 states and 517 transitions. [2021-10-20 05:59:29,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-20 05:59:29,006 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-20 05:59:29,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:59:29,010 INFO L225 Difference]: With dead ends: 354 [2021-10-20 05:59:29,010 INFO L226 Difference]: Without dead ends: 286 [2021-10-20 05:59:29,011 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 59.1ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-20 05:59:29,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-10-20 05:59:29,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 134. [2021-10-20 05:59:29,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.413533834586466) internal successors, (188), 133 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:59:29,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 188 transitions. [2021-10-20 05:59:29,058 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 188 transitions. Word has length 25 [2021-10-20 05:59:29,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:59:29,059 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 188 transitions. [2021-10-20 05:59:29,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:59:29,060 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 188 transitions. [2021-10-20 05:59:29,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-20 05:59:29,061 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:59:29,062 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:59:29,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-20 05:59:29,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:59:29,278 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:59:29,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:59:29,278 INFO L82 PathProgramCache]: Analyzing trace with hash 740712497, now seen corresponding path program 1 times [2021-10-20 05:59:29,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:59:29,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [646964157] [2021-10-20 05:59:29,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:59:29,280 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:59:29,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:59:29,281 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:59:29,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-20 05:59:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:59:29,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-20 05:59:29,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:59:29,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:59:29,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:59:29,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:59:29,747 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:59:29,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [646964157] [2021-10-20 05:59:29,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [646964157] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:59:29,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:59:29,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-20 05:59:29,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968049836] [2021-10-20 05:59:29,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 05:59:29,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:59:29,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 05:59:29,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:59:29,751 INFO L87 Difference]: Start difference. First operand 134 states and 188 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:59:29,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:59:29,969 INFO L93 Difference]: Finished difference Result 368 states and 521 transitions. [2021-10-20 05:59:29,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-20 05:59:29,969 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-20 05:59:29,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:59:29,973 INFO L225 Difference]: With dead ends: 368 [2021-10-20 05:59:29,973 INFO L226 Difference]: Without dead ends: 366 [2021-10-20 05:59:29,974 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 54.6ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-20 05:59:29,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-10-20 05:59:30,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 134. [2021-10-20 05:59:30,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.3984962406015038) internal successors, (186), 133 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:59:30,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 186 transitions. [2021-10-20 05:59:30,021 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 186 transitions. Word has length 26 [2021-10-20 05:59:30,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:59:30,022 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 186 transitions. [2021-10-20 05:59:30,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:59:30,022 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 186 transitions. [2021-10-20 05:59:30,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-20 05:59:30,031 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:59:30,031 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:59:30,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-20 05:59:30,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:59:30,247 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:59:30,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:59:30,248 INFO L82 PathProgramCache]: Analyzing trace with hash 2030628178, now seen corresponding path program 1 times [2021-10-20 05:59:30,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:59:30,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1773236372] [2021-10-20 05:59:30,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:59:30,249 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:59:30,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:59:30,250 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:59:30,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-20 05:59:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:59:30,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-20 05:59:30,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:59:30,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:59:30,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:59:30,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:59:30,724 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:59:30,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1773236372] [2021-10-20 05:59:30,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1773236372] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:59:30,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:59:30,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-20 05:59:30,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269764208] [2021-10-20 05:59:30,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 05:59:30,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:59:30,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 05:59:30,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:59:30,728 INFO L87 Difference]: Start difference. First operand 134 states and 186 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:59:30,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:59:30,822 INFO L93 Difference]: Finished difference Result 398 states and 551 transitions. [2021-10-20 05:59:30,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-20 05:59:30,823 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-20 05:59:30,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:59:30,826 INFO L225 Difference]: With dead ends: 398 [2021-10-20 05:59:30,826 INFO L226 Difference]: Without dead ends: 270 [2021-10-20 05:59:30,827 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-20 05:59:30,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-10-20 05:59:30,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 140. [2021-10-20 05:59:30,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.381294964028777) internal successors, (192), 139 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:59:30,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 192 transitions. [2021-10-20 05:59:30,853 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 192 transitions. Word has length 30 [2021-10-20 05:59:30,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:59:30,854 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 192 transitions. [2021-10-20 05:59:30,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:59:30,854 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 192 transitions. [2021-10-20 05:59:30,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-20 05:59:30,856 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:59:30,856 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:59:30,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-20 05:59:31,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:59:31,072 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:59:31,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:59:31,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1637601168, now seen corresponding path program 1 times [2021-10-20 05:59:31,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:59:31,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019929240] [2021-10-20 05:59:31,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:59:31,073 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:59:31,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:59:31,074 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:59:31,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-20 05:59:31,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:59:31,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-20 05:59:31,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:59:31,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:59:31,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:59:31,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:59:31,547 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:59:31,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019929240] [2021-10-20 05:59:31,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019929240] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:59:31,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:59:31,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-20 05:59:31,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913211941] [2021-10-20 05:59:31,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-20 05:59:31,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:59:31,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-20 05:59:31,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-20 05:59:31,549 INFO L87 Difference]: Start difference. First operand 140 states and 192 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:59:31,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:59:31,642 INFO L93 Difference]: Finished difference Result 432 states and 590 transitions. [2021-10-20 05:59:31,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 05:59:31,643 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-20 05:59:31,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:59:31,645 INFO L225 Difference]: With dead ends: 432 [2021-10-20 05:59:31,646 INFO L226 Difference]: Without dead ends: 298 [2021-10-20 05:59:31,648 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 30.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-20 05:59:31,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-10-20 05:59:31,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 144. [2021-10-20 05:59:31,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.3706293706293706) internal successors, (196), 143 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:59:31,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 196 transitions. [2021-10-20 05:59:31,675 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 196 transitions. Word has length 30 [2021-10-20 05:59:31,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:59:31,676 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 196 transitions. [2021-10-20 05:59:31,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:59:31,677 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 196 transitions. [2021-10-20 05:59:31,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-20 05:59:31,678 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:59:31,678 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:59:31,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-20 05:59:31,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:59:31,894 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:59:31,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:59:31,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1895766606, now seen corresponding path program 1 times [2021-10-20 05:59:31,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:59:31,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1547109279] [2021-10-20 05:59:31,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:59:31,896 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:59:31,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:59:31,896 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:59:31,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-20 05:59:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:59:32,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-20 05:59:32,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:59:32,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:59:32,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:59:32,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:59:32,420 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:59:32,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1547109279] [2021-10-20 05:59:32,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1547109279] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:59:32,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:59:32,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-20 05:59:32,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108831276] [2021-10-20 05:59:32,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 05:59:32,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:59:32,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 05:59:32,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:59:32,422 INFO L87 Difference]: Start difference. First operand 144 states and 196 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:59:32,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:59:32,517 INFO L93 Difference]: Finished difference Result 492 states and 672 transitions. [2021-10-20 05:59:32,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 05:59:32,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-20 05:59:32,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:59:32,521 INFO L225 Difference]: With dead ends: 492 [2021-10-20 05:59:32,521 INFO L226 Difference]: Without dead ends: 354 [2021-10-20 05:59:32,522 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:59:32,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-10-20 05:59:32,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 266. [2021-10-20 05:59:32,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 1.3547169811320754) internal successors, (359), 265 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:59:32,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 359 transitions. [2021-10-20 05:59:32,568 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 359 transitions. Word has length 30 [2021-10-20 05:59:32,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:59:32,568 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 359 transitions. [2021-10-20 05:59:32,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:59:32,569 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 359 transitions. [2021-10-20 05:59:32,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-20 05:59:32,570 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:59:32,570 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:59:32,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-20 05:59:32,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:59:32,786 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:59:32,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:59:32,787 INFO L82 PathProgramCache]: Analyzing trace with hash -112049588, now seen corresponding path program 1 times [2021-10-20 05:59:32,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:59:32,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [699755142] [2021-10-20 05:59:32,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:59:32,788 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:59:32,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:59:32,789 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:59:32,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-20 05:59:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:59:34,423 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-20 05:59:35,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:59:35,998 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-20 05:59:35,999 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-20 05:59:36,000 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:59:36,002 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:59:36,002 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:59:36,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-20 05:59:36,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:59:36,222 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 05:59:36,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:59:36 BoogieIcfgContainer [2021-10-20 05:59:36,381 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 05:59:36,382 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 05:59:36,382 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 05:59:36,383 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 05:59:36,383 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:59:24" (3/4) ... [2021-10-20 05:59:36,386 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-20 05:59:36,527 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 05:59:36,527 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 05:59:36,529 INFO L168 Benchmark]: Toolchain (without parser) took 15772.59 ms. Allocated memory was 58.7 MB in the beginning and 107.0 MB in the end (delta: 48.2 MB). Free memory was 36.0 MB in the beginning and 51.7 MB in the end (delta: -15.7 MB). Peak memory consumption was 32.8 MB. Max. memory is 16.1 GB. [2021-10-20 05:59:36,529 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 58.7 MB. Free memory is still 40.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:59:36,530 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1004.61 ms. Allocated memory was 58.7 MB in the beginning and 83.9 MB in the end (delta: 25.2 MB). Free memory was 35.9 MB in the beginning and 53.2 MB in the end (delta: -17.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-20 05:59:36,531 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.30 ms. Allocated memory is still 83.9 MB. Free memory was 53.2 MB in the beginning and 50.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:59:36,532 INFO L168 Benchmark]: Boogie Preprocessor took 65.48 ms. Allocated memory is still 83.9 MB. Free memory was 50.3 MB in the beginning and 48.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:59:36,532 INFO L168 Benchmark]: RCFGBuilder took 2966.98 ms. Allocated memory is still 83.9 MB. Free memory was 48.0 MB in the beginning and 42.9 MB in the end (delta: 5.1 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2021-10-20 05:59:36,533 INFO L168 Benchmark]: TraceAbstraction took 11497.20 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 42.5 MB in the beginning and 65.2 MB in the end (delta: -22.7 MB). Peak memory consumption was 1.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:59:36,533 INFO L168 Benchmark]: Witness Printer took 144.85 ms. Allocated memory is still 107.0 MB. Free memory was 65.2 MB in the beginning and 51.7 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-20 05:59:36,536 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 58.7 MB. Free memory is still 40.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1004.61 ms. Allocated memory was 58.7 MB in the beginning and 83.9 MB in the end (delta: 25.2 MB). Free memory was 35.9 MB in the beginning and 53.2 MB in the end (delta: -17.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.30 ms. Allocated memory is still 83.9 MB. Free memory was 53.2 MB in the beginning and 50.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.48 ms. Allocated memory is still 83.9 MB. Free memory was 50.3 MB in the beginning and 48.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2966.98 ms. Allocated memory is still 83.9 MB. Free memory was 48.0 MB in the beginning and 42.9 MB in the end (delta: 5.1 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11497.20 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 42.5 MB in the beginning and 65.2 MB in the end (delta: -22.7 MB). Peak memory consumption was 1.1 MB. Max. memory is 16.1 GB. * Witness Printer took 144.85 ms. Allocated memory is still 107.0 MB. Free memory was 65.2 MB in the beginning and 51.7 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 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: 54]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L70] int pumpRunning = 0; [L71] int systemActive = 1; [L249] int waterLevel = 1; [L250] int methaneLevelCritical = 0; [L620] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L843] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L916] int retValue_acc ; [L917] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L442] int retValue_acc ; [L445] retValue_acc = 1 [L446] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L923] tmp = valid_product() [L925] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L345] int splverifierCounter ; [L346] int tmp ; [L347] int tmp___0 ; [L348] int tmp___1 ; [L349] int tmp___2 ; [L352] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L354] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L356] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L362] tmp = __VERIFIER_nondet_int() [L364] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L267] COND TRUE waterLevel < 2 [L268] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L372] tmp___0 = __VERIFIER_nondet_int() [L374] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L279] COND FALSE !(\read(methaneLevelCritical)) [L282] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L382] tmp___2 = __VERIFIER_nondet_int() [L384] COND TRUE \read(tmp___2) [L241] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L78] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L85] COND TRUE \read(systemActive) [L107] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L110] COND TRUE ! pumpRunning [L204] int retValue_acc ; [L205] int tmp ; [L206] int tmp___0 ; [L329] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L332] COND FALSE !(waterLevel < 2) [L336] retValue_acc = 0 [L337] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L210] tmp = isHighWaterSensorDry() [L212] COND FALSE !(\read(tmp)) [L215] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L217] retValue_acc = tmp___0 [L218] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L112] tmp = isHighWaterLevel() [L114] COND TRUE \read(tmp) [L135] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L818] int tmp ; [L819] int tmp___0 ; [L288] int retValue_acc ; [L291] retValue_acc = methaneLevelCritical [L292] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L823] tmp = isMethaneLevelCritical() [L825] COND TRUE \read(tmp) [L159] int retValue_acc ; [L162] retValue_acc = pumpRunning [L163] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L827] tmp___0 = isPumpRunning() [L829] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L54] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - UnprovableResult [Line: 54]: 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: 54]: 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, 80 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 11245.7ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 29.8ms, AutomataDifference: 980.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 633 SDtfs, 933 SDslu, 1030 SDs, 0 SdLazy, 117 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 264.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 436 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 224.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=266occurred in iteration=9, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 286.4ms AutomataMinimizationTime, 9 MinimizatonAttempts, 792 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 256.6ms SsaConstructionTime, 2800.8ms SatisfiabilityAnalysisTime, 1961.5ms InterpolantComputationTime, 250 NumberOfCodeBlocks, 250 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 420 ConstructedInterpolants, 0 QuantifiedInterpolants, 656 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1811 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-20 05:59:36,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6df307-3c4b-49c6-ab3b-308eafcb0d94/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...