./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product48.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product48.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan --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 23682bb018ca337818baa43f0543337e0e1afa6d ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product48.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan --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 23682bb018ca337818baa43f0543337e0e1afa6d ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-a4ecdab [2020-11-22 12:56:10,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:56:10,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:56:10,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:56:10,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:56:10,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:56:10,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:56:10,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:56:10,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:56:10,121 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:56:10,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:56:10,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:56:10,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:56:10,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:56:10,126 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:56:10,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:56:10,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:56:10,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:56:10,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:56:10,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:56:10,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:56:10,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:56:10,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:56:10,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:56:10,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:56:10,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:56:10,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:56:10,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:56:10,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:56:10,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:56:10,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:56:10,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:56:10,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:56:10,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:56:10,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:56:10,166 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:56:10,167 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:56:10,167 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:56:10,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:56:10,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:56:10,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:56:10,170 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:56:10,200 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:56:10,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:56:10,201 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:56:10,202 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:56:10,202 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:56:10,202 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:56:10,203 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:56:10,203 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:56:10,203 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:56:10,204 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:56:10,204 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:56:10,204 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:56:10,205 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:56:10,205 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:56:10,205 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:56:10,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:56:10,206 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:56:10,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:56:10,206 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:56:10,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:56:10,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:56:10,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:56:10,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:56:10,207 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:56:10,207 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:56:10,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:56:10,208 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:56:10,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:56:10,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:56:10,208 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:56:10,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:56:10,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:56:10,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:56:10,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:56:10,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:56:10,210 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:56:10,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:56:10,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:56:10,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:56:10,210 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:56:10,211 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-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23682bb018ca337818baa43f0543337e0e1afa6d [2020-11-22 12:56:10,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:56:10,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:56:10,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:56:10,479 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:56:10,480 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:56:10,481 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product48.cil.c [2020-11-22 12:56:10,556 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/data/5b6af927c/4059f37a30414f1f8e5cce07e0cb9d83/FLAGbd5f88b43 [2020-11-22 12:56:11,013 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:56:11,013 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/sv-benchmarks/c/product-lines/minepump_spec4_product48.cil.c [2020-11-22 12:56:11,026 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/data/5b6af927c/4059f37a30414f1f8e5cce07e0cb9d83/FLAGbd5f88b43 [2020-11-22 12:56:11,360 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/data/5b6af927c/4059f37a30414f1f8e5cce07e0cb9d83 [2020-11-22 12:56:11,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:56:11,364 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:56:11,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:56:11,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:56:11,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:56:11,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:56:11" (1/1) ... [2020-11-22 12:56:11,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75aa49b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:11, skipping insertion in model container [2020-11-22 12:56:11,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:56:11" (1/1) ... [2020-11-22 12:56:11,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:56:11,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:56:11,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:56:11,786 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) [2020-11-22 12:56:11,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3de179f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:11, skipping insertion in model container [2020-11-22 12:56:11,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:56:11,787 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-11-22 12:56:11,794 INFO L168 Benchmark]: Toolchain (without parser) took 423.76 ms. Allocated memory is still 119.5 MB. Free memory was 87.3 MB in the beginning and 92.7 MB in the end (delta: -5.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:11,795 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 77.6 MB. Free memory was 35.8 MB in the beginning and 35.8 MB in the end (delta: 36.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:56:11,795 INFO L168 Benchmark]: CACSL2BoogieTranslator took 414.58 ms. Allocated memory is still 119.5 MB. Free memory was 87.0 MB in the beginning and 92.7 MB in the end (delta: -5.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:11,797 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 77.6 MB. Free memory was 35.8 MB in the beginning and 35.8 MB in the end (delta: 36.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 414.58 ms. Allocated memory is still 119.5 MB. Free memory was 87.0 MB in the beginning and 92.7 MB in the end (delta: -5.7 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: 99]: 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 0.2.0-a4ecdab [2020-11-22 12:56:14,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:56:14,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:56:14,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:56:14,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:56:14,156 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:56:14,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:56:14,162 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:56:14,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:56:14,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:56:14,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:56:14,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:56:14,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:56:14,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:56:14,185 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:56:14,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:56:14,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:56:14,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:56:14,195 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:56:14,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:56:14,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:56:14,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:56:14,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:56:14,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:56:14,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:56:14,225 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:56:14,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:56:14,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:56:14,228 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:56:14,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:56:14,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:56:14,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:56:14,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:56:14,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:56:14,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:56:14,235 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:56:14,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:56:14,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:56:14,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:56:14,238 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:56:14,239 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:56:14,240 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-22 12:56:14,279 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:56:14,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:56:14,282 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:56:14,282 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:56:14,282 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:56:14,283 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:56:14,283 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:56:14,283 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:56:14,284 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:56:14,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:56:14,286 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:56:14,286 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:56:14,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:56:14,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:56:14,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:56:14,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:56:14,288 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:56:14,288 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 12:56:14,288 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 12:56:14,288 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:56:14,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:56:14,289 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:56:14,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:56:14,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:56:14,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 12:56:14,290 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:56:14,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:56:14,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:56:14,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:56:14,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:56:14,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:56:14,291 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 12:56:14,291 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 12:56:14,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:56:14,292 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:56:14,292 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:56:14,292 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-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23682bb018ca337818baa43f0543337e0e1afa6d [2020-11-22 12:56:14,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:56:14,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:56:14,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:56:14,735 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:56:14,736 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:56:14,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product48.cil.c [2020-11-22 12:56:14,812 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/data/f970c199c/5d45e15c1a754b4d937254d7f7bfb2b6/FLAG0d75416bd [2020-11-22 12:56:15,414 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:56:15,415 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/sv-benchmarks/c/product-lines/minepump_spec4_product48.cil.c [2020-11-22 12:56:15,430 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/data/f970c199c/5d45e15c1a754b4d937254d7f7bfb2b6/FLAG0d75416bd [2020-11-22 12:56:15,685 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/data/f970c199c/5d45e15c1a754b4d937254d7f7bfb2b6 [2020-11-22 12:56:15,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:56:15,690 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:56:15,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:56:15,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:56:15,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:56:15,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:56:15" (1/1) ... [2020-11-22 12:56:15,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@291e3a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:15, skipping insertion in model container [2020-11-22 12:56:15,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:56:15" (1/1) ... [2020-11-22 12:56:15,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:56:15,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:56:16,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:56:16,083 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-11-22 12:56:16,100 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:56:16,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:56:16,253 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:56:16,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:56:16,391 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:56:16,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:16 WrapperNode [2020-11-22 12:56:16,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:56:16,393 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:56:16,393 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:56:16,393 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:56:16,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:16" (1/1) ... [2020-11-22 12:56:16,419 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:16" (1/1) ... [2020-11-22 12:56:16,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:56:16,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:56:16,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:56:16,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:56:16,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:16" (1/1) ... [2020-11-22 12:56:16,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:16" (1/1) ... [2020-11-22 12:56:16,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:16" (1/1) ... [2020-11-22 12:56:16,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:16" (1/1) ... [2020-11-22 12:56:16,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:16" (1/1) ... [2020-11-22 12:56:16,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:16" (1/1) ... [2020-11-22 12:56:16,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:16" (1/1) ... [2020-11-22 12:56:16,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:56:16,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:56:16,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:56:16,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:56:16,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:56:16,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:56:16,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 12:56:16,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:56:16,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:56:18,959 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:56:18,960 INFO L298 CfgBuilder]: Removed 204 assume(true) statements. [2020-11-22 12:56:18,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:18 BoogieIcfgContainer [2020-11-22 12:56:18,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:56:18,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:56:18,965 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:56:18,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:56:18,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:56:15" (1/3) ... [2020-11-22 12:56:18,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5a03ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:56:18, skipping insertion in model container [2020-11-22 12:56:18,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:16" (2/3) ... [2020-11-22 12:56:18,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5a03ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:56:18, skipping insertion in model container [2020-11-22 12:56:18,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:18" (3/3) ... [2020-11-22 12:56:18,972 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product48.cil.c [2020-11-22 12:56:18,983 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:56:18,987 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-22 12:56:18,999 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-22 12:56:19,031 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:56:19,031 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:56:19,031 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:56:19,031 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:56:19,031 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:56:19,031 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:56:19,031 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:56:19,031 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:56:19,055 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states. [2020-11-22 12:56:19,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-22 12:56:19,064 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:19,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:19,065 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:19,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:19,069 INFO L82 PathProgramCache]: Analyzing trace with hash -240807826, now seen corresponding path program 1 times [2020-11-22 12:56:19,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:56:19,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1254747080] [2020-11-22 12:56:19,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-22 12:56:19,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:19,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-22 12:56:19,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:19,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:19,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:19,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:19,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1254747080] [2020-11-22 12:56:19,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:19,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 12:56:19,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942219733] [2020-11-22 12:56:19,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 12:56:19,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:56:19,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 12:56:19,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:56:19,368 INFO L87 Difference]: Start difference. First operand 134 states. Second operand 2 states. [2020-11-22 12:56:19,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:19,399 INFO L93 Difference]: Finished difference Result 259 states and 386 transitions. [2020-11-22 12:56:19,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 12:56:19,401 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-22 12:56:19,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:19,411 INFO L225 Difference]: With dead ends: 259 [2020-11-22 12:56:19,411 INFO L226 Difference]: Without dead ends: 127 [2020-11-22 12:56:19,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:56:19,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-11-22 12:56:19,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2020-11-22 12:56:19,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-11-22 12:56:19,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 183 transitions. [2020-11-22 12:56:19,457 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 183 transitions. Word has length 16 [2020-11-22 12:56:19,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:19,458 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 183 transitions. [2020-11-22 12:56:19,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 12:56:19,458 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 183 transitions. [2020-11-22 12:56:19,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 12:56:19,459 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:19,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:19,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 12:56:19,679 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:19,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:19,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1287564723, now seen corresponding path program 1 times [2020-11-22 12:56:19,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:56:19,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1112817768] [2020-11-22 12:56:19,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-22 12:56:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:19,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:56:19,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:19,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:19,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:19,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:19,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1112817768] [2020-11-22 12:56:19,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:19,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-22 12:56:19,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567451163] [2020-11-22 12:56:19,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:56:19,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:56:19,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:56:19,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:56:19,923 INFO L87 Difference]: Start difference. First operand 127 states and 183 transitions. Second operand 4 states. [2020-11-22 12:56:19,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:19,940 INFO L93 Difference]: Finished difference Result 127 states and 183 transitions. [2020-11-22 12:56:19,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:56:19,941 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-22 12:56:19,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:19,942 INFO L225 Difference]: With dead ends: 127 [2020-11-22 12:56:19,948 INFO L226 Difference]: Without dead ends: 53 [2020-11-22 12:56:19,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:56:19,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-22 12:56:19,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-11-22 12:56:19,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-22 12:56:19,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 76 transitions. [2020-11-22 12:56:19,955 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 76 transitions. Word has length 17 [2020-11-22 12:56:19,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:19,956 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 76 transitions. [2020-11-22 12:56:19,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:56:19,956 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 76 transitions. [2020-11-22 12:56:19,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-22 12:56:19,957 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:19,957 INFO L422 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] [2020-11-22 12:56:20,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 12:56:20,158 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:20,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:20,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1189907750, now seen corresponding path program 1 times [2020-11-22 12:56:20,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:56:20,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579814347] [2020-11-22 12:56:20,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-22 12:56:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:20,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:56:20,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:20,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:20,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:20,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:20,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579814347] [2020-11-22 12:56:20,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:20,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-22 12:56:20,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661745322] [2020-11-22 12:56:20,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:56:20,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:56:20,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:56:20,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:56:20,401 INFO L87 Difference]: Start difference. First operand 53 states and 76 transitions. Second operand 4 states. [2020-11-22 12:56:20,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:20,473 INFO L93 Difference]: Finished difference Result 170 states and 250 transitions. [2020-11-22 12:56:20,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:56:20,474 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-11-22 12:56:20,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:20,475 INFO L225 Difference]: With dead ends: 170 [2020-11-22 12:56:20,476 INFO L226 Difference]: Without dead ends: 123 [2020-11-22 12:56:20,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:56:20,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-11-22 12:56:20,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 72. [2020-11-22 12:56:20,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-22 12:56:20,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 105 transitions. [2020-11-22 12:56:20,505 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 105 transitions. Word has length 22 [2020-11-22 12:56:20,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:20,506 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 105 transitions. [2020-11-22 12:56:20,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:56:20,506 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 105 transitions. [2020-11-22 12:56:20,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-22 12:56:20,508 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:20,508 INFO L422 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] [2020-11-22 12:56:20,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 12:56:20,724 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:20,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:20,725 INFO L82 PathProgramCache]: Analyzing trace with hash 752688312, now seen corresponding path program 1 times [2020-11-22 12:56:20,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:56:20,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [826174008] [2020-11-22 12:56:20,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-22 12:56:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:20,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:56:20,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:20,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:20,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:20,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:20,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [826174008] [2020-11-22 12:56:20,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:20,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-22 12:56:20,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646265042] [2020-11-22 12:56:20,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:56:20,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:56:20,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:56:20,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:56:20,912 INFO L87 Difference]: Start difference. First operand 72 states and 105 transitions. Second operand 3 states. [2020-11-22 12:56:21,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:21,008 INFO L93 Difference]: Finished difference Result 159 states and 234 transitions. [2020-11-22 12:56:21,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:56:21,009 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-22 12:56:21,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:21,010 INFO L225 Difference]: With dead ends: 159 [2020-11-22 12:56:21,010 INFO L226 Difference]: Without dead ends: 93 [2020-11-22 12:56:21,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:56:21,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-22 12:56:21,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2020-11-22 12:56:21,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-11-22 12:56:21,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 129 transitions. [2020-11-22 12:56:21,023 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 129 transitions. Word has length 24 [2020-11-22 12:56:21,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:21,024 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 129 transitions. [2020-11-22 12:56:21,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:56:21,024 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 129 transitions. [2020-11-22 12:56:21,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-22 12:56:21,025 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:21,025 INFO L422 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] [2020-11-22 12:56:21,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-22 12:56:21,226 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:21,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:21,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1744683281, now seen corresponding path program 1 times [2020-11-22 12:56:21,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:56:21,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494272481] [2020-11-22 12:56:21,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-22 12:56:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:21,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 12:56:21,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:21,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:21,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:21,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:21,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494272481] [2020-11-22 12:56:21,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:21,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-11-22 12:56:21,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591363615] [2020-11-22 12:56:21,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-22 12:56:21,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:56:21,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-22 12:56:21,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-22 12:56:21,475 INFO L87 Difference]: Start difference. First operand 91 states and 129 transitions. Second operand 8 states. [2020-11-22 12:56:21,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:21,977 INFO L93 Difference]: Finished difference Result 668 states and 972 transitions. [2020-11-22 12:56:21,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-22 12:56:21,978 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-11-22 12:56:21,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:21,982 INFO L225 Difference]: With dead ends: 668 [2020-11-22 12:56:21,982 INFO L226 Difference]: Without dead ends: 583 [2020-11-22 12:56:21,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-11-22 12:56:21,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2020-11-22 12:56:22,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 227. [2020-11-22 12:56:22,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-11-22 12:56:22,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 316 transitions. [2020-11-22 12:56:22,048 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 316 transitions. Word has length 25 [2020-11-22 12:56:22,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:22,049 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 316 transitions. [2020-11-22 12:56:22,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-22 12:56:22,049 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 316 transitions. [2020-11-22 12:56:22,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-22 12:56:22,056 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:22,056 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:22,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-22 12:56:22,273 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:22,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:22,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1656950715, now seen corresponding path program 1 times [2020-11-22 12:56:22,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:56:22,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659524982] [2020-11-22 12:56:22,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-22 12:56:22,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:22,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 12:56:22,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:22,542 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:22,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:22,572 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:22,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659524982] [2020-11-22 12:56:22,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [532268867] [2020-11-22 12:56:22,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-22 12:56:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:22,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 12:56:22,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:22,777 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-22 12:56:22,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:22,800 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-22 12:56:22,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2020-11-22 12:56:22,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [3, 3] total 9 [2020-11-22 12:56:22,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790152104] [2020-11-22 12:56:22,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:56:22,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:56:22,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:56:22,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-22 12:56:22,803 INFO L87 Difference]: Start difference. First operand 227 states and 316 transitions. Second operand 5 states. [2020-11-22 12:56:23,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:23,028 INFO L93 Difference]: Finished difference Result 543 states and 767 transitions. [2020-11-22 12:56:23,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-22 12:56:23,029 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-11-22 12:56:23,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:23,032 INFO L225 Difference]: With dead ends: 543 [2020-11-22 12:56:23,039 INFO L226 Difference]: Without dead ends: 541 [2020-11-22 12:56:23,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-11-22 12:56:23,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2020-11-22 12:56:23,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 227. [2020-11-22 12:56:23,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-11-22 12:56:23,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 314 transitions. [2020-11-22 12:56:23,081 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 314 transitions. Word has length 41 [2020-11-22 12:56:23,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:23,083 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 314 transitions. [2020-11-22 12:56:23,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:56:23,083 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 314 transitions. [2020-11-22 12:56:23,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-22 12:56:23,086 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:23,087 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:23,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3,8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-22 12:56:23,504 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:23,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:23,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1887211249, now seen corresponding path program 1 times [2020-11-22 12:56:23,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:56:23,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713180800] [2020-11-22 12:56:23,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-22 12:56:23,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:23,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 12:56:23,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:23,712 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:23,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:23,760 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:23,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713180800] [2020-11-22 12:56:23,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1904282729] [2020-11-22 12:56:23,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-22 12:56:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:23,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 12:56:23,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:23,995 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-22 12:56:23,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:24,014 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-22 12:56:24,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2020-11-22 12:56:24,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [3, 3] total 9 [2020-11-22 12:56:24,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461340615] [2020-11-22 12:56:24,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:56:24,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:56:24,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:56:24,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-22 12:56:24,017 INFO L87 Difference]: Start difference. First operand 227 states and 314 transitions. Second operand 5 states. [2020-11-22 12:56:24,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:24,156 INFO L93 Difference]: Finished difference Result 680 states and 933 transitions. [2020-11-22 12:56:24,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:56:24,157 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-11-22 12:56:24,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:24,159 INFO L225 Difference]: With dead ends: 680 [2020-11-22 12:56:24,160 INFO L226 Difference]: Without dead ends: 459 [2020-11-22 12:56:24,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-11-22 12:56:24,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2020-11-22 12:56:24,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 242. [2020-11-22 12:56:24,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-11-22 12:56:24,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 329 transitions. [2020-11-22 12:56:24,199 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 329 transitions. Word has length 51 [2020-11-22 12:56:24,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:24,200 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 329 transitions. [2020-11-22 12:56:24,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:56:24,200 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 329 transitions. [2020-11-22 12:56:24,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-22 12:56:24,201 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:24,201 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:24,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3,10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-22 12:56:24,626 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:24,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:24,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1300405235, now seen corresponding path program 1 times [2020-11-22 12:56:24,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:56:24,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195652057] [2020-11-22 12:56:24,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-11-22 12:56:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:24,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 12:56:24,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:24,853 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:24,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:24,889 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:24,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195652057] [2020-11-22 12:56:24,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1113126458] [2020-11-22 12:56:24,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-22 12:56:25,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:25,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-22 12:56:25,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:25,117 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-22 12:56:25,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:25,160 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-22 12:56:25,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2020-11-22 12:56:25,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [3, 3] total 11 [2020-11-22 12:56:25,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975345642] [2020-11-22 12:56:25,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-22 12:56:25,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:56:25,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-22 12:56:25,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-11-22 12:56:25,162 INFO L87 Difference]: Start difference. First operand 242 states and 329 transitions. Second operand 7 states. [2020-11-22 12:56:25,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:25,339 INFO L93 Difference]: Finished difference Result 625 states and 849 transitions. [2020-11-22 12:56:25,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:56:25,339 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-11-22 12:56:25,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:25,342 INFO L225 Difference]: With dead ends: 625 [2020-11-22 12:56:25,342 INFO L226 Difference]: Without dead ends: 389 [2020-11-22 12:56:25,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-11-22 12:56:25,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-11-22 12:56:25,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 211. [2020-11-22 12:56:25,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-11-22 12:56:25,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 282 transitions. [2020-11-22 12:56:25,382 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 282 transitions. Word has length 51 [2020-11-22 12:56:25,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:25,385 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 282 transitions. [2020-11-22 12:56:25,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-22 12:56:25,385 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 282 transitions. [2020-11-22 12:56:25,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-22 12:56:25,387 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:25,387 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:25,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk,11 mathsat -unsat_core_generation=3 [2020-11-22 12:56:25,796 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:25,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:25,796 INFO L82 PathProgramCache]: Analyzing trace with hash -118115538, now seen corresponding path program 1 times [2020-11-22 12:56:25,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:56:25,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1527409934] [2020-11-22 12:56:25,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-11-22 12:56:25,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:25,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-22 12:56:25,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:26,083 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-22 12:56:26,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:26,147 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-22 12:56:26,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1527409934] [2020-11-22 12:56:26,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [430218654] [2020-11-22 12:56:26,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-22 12:56:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:26,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-22 12:56:26,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:26,378 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-22 12:56:26,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:26,400 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-22 12:56:26,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537410059] [2020-11-22 12:56:26,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:56:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:26,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-22 12:56:26,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:56:26,561 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-22 12:56:26,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:56:26,577 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-22 12:56:26,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-22 12:56:26,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5, 5] total 10 [2020-11-22 12:56:26,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653079457] [2020-11-22 12:56:26,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-22 12:56:26,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:56:26,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-22 12:56:26,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-11-22 12:56:26,581 INFO L87 Difference]: Start difference. First operand 211 states and 282 transitions. Second operand 11 states. [2020-11-22 12:56:27,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:27,672 INFO L93 Difference]: Finished difference Result 1316 states and 1806 transitions. [2020-11-22 12:56:27,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-22 12:56:27,672 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 53 [2020-11-22 12:56:27,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:27,678 INFO L225 Difference]: With dead ends: 1316 [2020-11-22 12:56:27,678 INFO L226 Difference]: Without dead ends: 1153 [2020-11-22 12:56:27,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 300 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=208, Invalid=604, Unknown=0, NotChecked=0, Total=812 [2020-11-22 12:56:27,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2020-11-22 12:56:27,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 350. [2020-11-22 12:56:27,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-11-22 12:56:27,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 475 transitions. [2020-11-22 12:56:27,746 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 475 transitions. Word has length 53 [2020-11-22 12:56:27,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:27,746 INFO L481 AbstractCegarLoop]: Abstraction has 350 states and 475 transitions. [2020-11-22 12:56:27,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-22 12:56:27,746 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 475 transitions. [2020-11-22 12:56:27,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-11-22 12:56:27,747 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:27,748 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:28,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3,14 cvc4 --incremental --print-success --lang smt --rewrite-divk,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:56:28,361 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:56:28,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:28,361 INFO L82 PathProgramCache]: Analyzing trace with hash -346129302, now seen corresponding path program 2 times [2020-11-22 12:56:28,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:56:28,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1501845245] [2020-11-22 12:56:28,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2020-11-22 12:56:29,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-22 12:56:29,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-11-22 12:56:29,516 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:56:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:56:30,535 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:56:30,851 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-22 12:56:30,851 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 12:56:31,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-11-22 12:56:31,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:56:31 BoogieIcfgContainer [2020-11-22 12:56:31,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:56:31,265 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:56:31,265 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:56:31,265 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:56:31,266 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:18" (3/4) ... [2020-11-22 12:56:31,267 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 12:56:31,441 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_171461b9-d9ee-4fc3-9f8e-32bd4c8c97fd/bin/utaipan/witness.graphml [2020-11-22 12:56:31,441 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:56:31,443 INFO L168 Benchmark]: Toolchain (without parser) took 15751.73 ms. Allocated memory was 54.5 MB in the beginning and 146.8 MB in the end (delta: 92.3 MB). Free memory was 31.5 MB in the beginning and 61.7 MB in the end (delta: -30.2 MB). Peak memory consumption was 63.0 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:31,444 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 54.5 MB. Free memory was 37.3 MB in the beginning and 37.3 MB in the end (delta: 63.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:56:31,444 INFO L168 Benchmark]: CACSL2BoogieTranslator took 698.01 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 31.2 MB in the beginning and 44.3 MB in the end (delta: -13.1 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:31,444 INFO L168 Benchmark]: Boogie Procedure Inliner took 105.49 ms. Allocated memory is still 69.2 MB. Free memory was 44.3 MB in the beginning and 40.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:31,445 INFO L168 Benchmark]: Boogie Preprocessor took 93.05 ms. Allocated memory is still 69.2 MB. Free memory was 40.4 MB in the beginning and 37.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:31,445 INFO L168 Benchmark]: RCFGBuilder took 2370.45 ms. Allocated memory is still 69.2 MB. Free memory was 37.2 MB in the beginning and 40.0 MB in the end (delta: -2.8 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:31,446 INFO L168 Benchmark]: TraceAbstraction took 12299.91 ms. Allocated memory was 69.2 MB in the beginning and 146.8 MB in the end (delta: 77.6 MB). Free memory was 39.5 MB in the beginning and 90.0 MB in the end (delta: -50.5 MB). Peak memory consumption was 63.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:31,446 INFO L168 Benchmark]: Witness Printer took 176.24 ms. Allocated memory is still 146.8 MB. Free memory was 90.0 MB in the beginning and 61.7 MB in the end (delta: 28.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:31,448 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 54.5 MB. Free memory was 37.3 MB in the beginning and 37.3 MB in the end (delta: 63.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 698.01 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 31.2 MB in the beginning and 44.3 MB in the end (delta: -13.1 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 105.49 ms. Allocated memory is still 69.2 MB. Free memory was 44.3 MB in the beginning and 40.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 93.05 ms. Allocated memory is still 69.2 MB. Free memory was 40.4 MB in the beginning and 37.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2370.45 ms. Allocated memory is still 69.2 MB. Free memory was 37.2 MB in the beginning and 40.0 MB in the end (delta: -2.8 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12299.91 ms. Allocated memory was 69.2 MB in the beginning and 146.8 MB in the end (delta: 77.6 MB). Free memory was 39.5 MB in the beginning and 90.0 MB in the end (delta: -50.5 MB). Peak memory consumption was 63.4 MB. Max. memory is 16.1 GB. * Witness Printer took 176.24 ms. Allocated memory is still 146.8 MB. Free memory was 90.0 MB in the beginning and 61.7 MB in the end (delta: 28.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L240] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L446] int cleanupTimeShifts = 4; [L558] int pumpRunning = 0; [L559] int systemActive = 1; [L776] int waterLevel = 1; [L777] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L527] int retValue_acc ; [L528] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L965] int retValue_acc ; [L968] retValue_acc = 1 [L969] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L534] tmp = valid_product() [L536] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L871] int splverifierCounter ; [L872] int tmp ; [L873] int tmp___0 ; [L874] int tmp___1 ; [L875] int tmp___2 ; [L878] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L880] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L882] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L888] tmp = __VERIFIER_nondet_int() [L890] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L794] COND TRUE waterLevel < 2 [L795] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L898] tmp___0 = __VERIFIER_nondet_int() [L900] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L908] tmp___2 = __VERIFIER_nondet_int() [L910] COND TRUE \read(tmp___2) [L771] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L565] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L572] COND TRUE \read(systemActive) [L620] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L623] COND FALSE !(\read(pumpRunning)) [L594] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L597] COND TRUE ! pumpRunning [L734] int retValue_acc ; [L735] int tmp ; [L736] int tmp___0 ; [L856] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L859] COND FALSE !(waterLevel < 2) [L863] retValue_acc = 0 [L864] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L740] tmp = isHighWaterSensorDry() [L742] COND FALSE !(\read(tmp)) [L745] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L747] retValue_acc = tmp___0 [L748] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L599] tmp = isHighWaterLevel() [L601] COND TRUE \read(tmp) [L653] int tmp ; [L678] int retValue_acc ; [L815] int retValue_acc ; [L818] retValue_acc = methaneLevelCritical [L819] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L682] retValue_acc = isMethaneLevelCritical() [L684] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L657] tmp = isMethaneAlarm() [L659] COND FALSE !(\read(tmp)) [L648] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L46] int tmp ; [L47] int tmp___0 ; [L847] int retValue_acc ; [L850] retValue_acc = waterLevel [L851] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L51] tmp = getWaterLevel() [L53] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L880] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L882] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L888] tmp = __VERIFIER_nondet_int() [L890] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L898] tmp___0 = __VERIFIER_nondet_int() [L900] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L908] tmp___2 = __VERIFIER_nondet_int() [L910] COND TRUE \read(tmp___2) [L771] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L565] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L782] COND TRUE waterLevel > 0 [L783] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L572] COND TRUE \read(systemActive) [L620] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L623] COND TRUE \read(pumpRunning) [L678] int retValue_acc ; [L815] int retValue_acc ; [L818] retValue_acc = methaneLevelCritical [L819] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L682] retValue_acc = isMethaneLevelCritical() [L684] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L625] tmp = isMethaneAlarm() [L627] COND FALSE !(\read(tmp)) [L594] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L597] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L46] int tmp ; [L47] int tmp___0 ; [L847] int retValue_acc ; [L850] retValue_acc = waterLevel [L851] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L51] tmp = getWaterLevel() [L53] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L880] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L882] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L888] tmp = __VERIFIER_nondet_int() [L890] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L898] tmp___0 = __VERIFIER_nondet_int() [L900] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L908] tmp___2 = __VERIFIER_nondet_int() [L910] COND TRUE \read(tmp___2) [L771] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L565] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L782] COND TRUE waterLevel > 0 [L783] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L572] COND TRUE \read(systemActive) [L620] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L623] COND TRUE \read(pumpRunning) [L678] int retValue_acc ; [L815] int retValue_acc ; [L818] retValue_acc = methaneLevelCritical [L819] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L682] retValue_acc = isMethaneLevelCritical() [L684] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L625] tmp = isMethaneAlarm() [L627] COND FALSE !(\read(tmp)) [L594] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L597] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L46] int tmp ; [L47] int tmp___0 ; [L847] int retValue_acc ; [L850] retValue_acc = waterLevel [L851] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L51] tmp = getWaterLevel() [L53] COND TRUE tmp == 0 [L689] int retValue_acc ; [L692] retValue_acc = pumpRunning [L693] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L55] tmp___0 = isPumpRunning() [L57] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L3] __assert_fail("0", "minepump_spec4_product48.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 134 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.0s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1108 SDtfs, 2869 SDslu, 2584 SDs, 0 SdLazy, 437 SolverSat, 112 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1113 GetRequests, 1031 SyntacticMatches, 4 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=350occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 1921 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 621 NumberOfCodeBlocks, 621 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1070 ConstructedInterpolants, 1 QuantifiedInterpolants, 143492 SizeOfPredicates, 30 NumberOfNonLiveVariables, 3098 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 28 InterpolantComputations, 16 PerfectInterpolantSequences, 172/256 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...