./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7291fd5b9449f17989061ec30bdd7b74e8732c40c8095270267a47672f4a66be ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7291fd5b9449f17989061ec30bdd7b74e8732c40c8095270267a47672f4a66be ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:13:46,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:13:46,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:13:46,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:13:46,147 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:13:46,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:13:46,154 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:13:46,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:13:46,160 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:13:46,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:13:46,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:13:46,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:13:46,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:13:46,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:13:46,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:13:46,178 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:13:46,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:13:46,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:13:46,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:13:46,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:13:46,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:13:46,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:13:46,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:13:46,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:13:46,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:13:46,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:13:46,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:13:46,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:13:46,210 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:13:46,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:13:46,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:13:46,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:13:46,215 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:13:46,216 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:13:46,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:13:46,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:13:46,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:13:46,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:13:46,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:13:46,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:13:46,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:13:46,221 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:13:46,263 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:13:46,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:13:46,265 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:13:46,265 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:13:46,265 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:13:46,265 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:13:46,266 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:13:46,266 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:13:46,272 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:13:46,272 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:13:46,273 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:13:46,273 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:13:46,274 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:13:46,274 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:13:46,274 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:13:46,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:13:46,275 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:13:46,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:13:46,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:13:46,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:13:46,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:13:46,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:13:46,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:13:46,277 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:13:46,277 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:13:46,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:13:46,277 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:13:46,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:13:46,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:13:46,279 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:13:46,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:13:46,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:13:46,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:13:46,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:13:46,280 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:13:46,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:13:46,281 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:13:46,281 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:13:46,281 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:13:46,281 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7291fd5b9449f17989061ec30bdd7b74e8732c40c8095270267a47672f4a66be [2021-10-24 10:13:46,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:13:46,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:13:46,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:13:46,599 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:13:46,600 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:13:46,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c [2021-10-24 10:13:46,679 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/data/acd29445d/bf59831fe0ca4413a33d680d5f9a3051/FLAG9b088d3c5 [2021-10-24 10:13:47,339 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:13:47,339 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c [2021-10-24 10:13:47,362 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/data/acd29445d/bf59831fe0ca4413a33d680d5f9a3051/FLAG9b088d3c5 [2021-10-24 10:13:47,620 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/data/acd29445d/bf59831fe0ca4413a33d680d5f9a3051 [2021-10-24 10:13:47,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:13:47,625 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:13:47,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:13:47,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:13:47,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:13:47,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:13:47" (1/1) ... [2021-10-24 10:13:47,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17c5c925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:47, skipping insertion in model container [2021-10-24 10:13:47,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:13:47" (1/1) ... [2021-10-24 10:13:47,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:13:47,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:13:47,960 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c[6254,6267] [2021-10-24 10:13:48,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:13:48,085 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-24 10:13:48,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2a875c19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:48, skipping insertion in model container [2021-10-24 10:13:48,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:13:48,086 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-24 10:13:48,088 INFO L168 Benchmark]: Toolchain (without parser) took 461.59 ms. Allocated memory is still 113.2 MB. Free memory was 79.9 MB in the beginning and 85.9 MB in the end (delta: -6.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:13:48,089 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 79.7 MB. Free memory was 36.0 MB in the beginning and 36.0 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:13:48,090 INFO L168 Benchmark]: CACSL2BoogieTranslator took 455.71 ms. Allocated memory is still 113.2 MB. Free memory was 79.7 MB in the beginning and 85.9 MB in the end (delta: -6.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:13:48,092 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 79.7 MB. Free memory was 36.0 MB in the beginning and 36.0 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 455.71 ms. Allocated memory is still 113.2 MB. Free memory was 79.7 MB in the beginning and 85.9 MB in the end (delta: -6.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 638]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:13:50,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:13:50,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:13:50,327 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:13:50,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:13:50,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:13:50,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:13:50,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:13:50,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:13:50,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:13:50,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:13:50,345 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:13:50,345 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:13:50,347 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:13:50,348 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:13:50,350 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:13:50,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:13:50,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:13:50,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:13:50,367 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:13:50,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:13:50,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:13:50,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:13:50,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:13:50,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:13:50,388 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:13:50,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:13:50,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:13:50,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:13:50,392 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:13:50,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:13:50,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:13:50,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:13:50,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:13:50,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:13:50,402 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:13:50,409 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:13:50,409 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:13:50,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:13:50,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:13:50,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:13:50,413 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-24 10:13:50,455 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:13:50,455 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:13:50,457 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:13:50,457 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:13:50,457 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:13:50,457 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:13:50,457 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:13:50,458 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:13:50,458 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:13:50,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:13:50,460 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:13:50,461 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:13:50,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:13:50,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:13:50,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:13:50,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:13:50,462 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:13:50,462 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 10:13:50,462 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 10:13:50,462 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:13:50,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:13:50,462 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:13:50,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:13:50,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:13:50,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 10:13:50,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:13:50,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:13:50,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:13:50,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:13:50,464 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:13:50,464 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 10:13:50,465 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 10:13:50,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:13:50,465 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:13:50,465 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:13:50,465 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7291fd5b9449f17989061ec30bdd7b74e8732c40c8095270267a47672f4a66be [2021-10-24 10:13:50,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:13:50,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:13:50,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:13:50,942 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:13:50,943 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:13:50,944 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c [2021-10-24 10:13:51,017 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/data/e59489b66/9b83f40532b2496a89458bb18e106292/FLAG6db0d5633 [2021-10-24 10:13:51,647 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:13:51,650 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c [2021-10-24 10:13:51,670 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/data/e59489b66/9b83f40532b2496a89458bb18e106292/FLAG6db0d5633 [2021-10-24 10:13:51,931 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/data/e59489b66/9b83f40532b2496a89458bb18e106292 [2021-10-24 10:13:51,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:13:51,935 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:13:51,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:13:51,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:13:51,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:13:51,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:13:51" (1/1) ... [2021-10-24 10:13:51,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36c3151e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:51, skipping insertion in model container [2021-10-24 10:13:51,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:13:51" (1/1) ... [2021-10-24 10:13:51,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:13:51,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:13:52,178 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c[6254,6267] [2021-10-24 10:13:52,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:13:52,348 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-24 10:13:52,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:13:52,402 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c[6254,6267] [2021-10-24 10:13:52,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:13:52,461 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:13:52,486 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c[6254,6267] [2021-10-24 10:13:52,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:13:52,540 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:13:52,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:52 WrapperNode [2021-10-24 10:13:52,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:13:52,542 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:13:52,542 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:13:52,542 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:13:52,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:52" (1/1) ... [2021-10-24 10:13:52,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:52" (1/1) ... [2021-10-24 10:13:52,656 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:13:52,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:13:52,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:13:52,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:13:52,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:52" (1/1) ... [2021-10-24 10:13:52,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:52" (1/1) ... [2021-10-24 10:13:52,687 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:52" (1/1) ... [2021-10-24 10:13:52,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:52" (1/1) ... [2021-10-24 10:13:52,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:52" (1/1) ... [2021-10-24 10:13:52,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:52" (1/1) ... [2021-10-24 10:13:52,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:52" (1/1) ... [2021-10-24 10:13:52,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:13:52,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:13:52,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:13:52,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:13:52,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:52" (1/1) ... [2021-10-24 10:13:52,755 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:13:52,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:13:52,789 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:13:52,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:13:52,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:13:52,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 10:13:52,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:13:52,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:13:55,316 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:13:55,317 INFO L299 CfgBuilder]: Removed 158 assume(true) statements. [2021-10-24 10:13:55,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:13:55 BoogieIcfgContainer [2021-10-24 10:13:55,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:13:55,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:13:55,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:13:55,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:13:55,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:13:51" (1/3) ... [2021-10-24 10:13:55,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5efd6552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:13:55, skipping insertion in model container [2021-10-24 10:13:55,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:52" (2/3) ... [2021-10-24 10:13:55,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5efd6552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:13:55, skipping insertion in model container [2021-10-24 10:13:55,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:13:55" (3/3) ... [2021-10-24 10:13:55,331 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product50.cil.c [2021-10-24 10:13:55,336 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:13:55,336 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-24 10:13:55,377 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:13:55,383 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:13:55,384 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-24 10:13:55,400 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 113 states have (on average 1.5663716814159292) internal successors, (177), 116 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:55,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-24 10:13:55,407 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:13:55,407 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:13:55,408 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:13:55,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:13:55,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1800894747, now seen corresponding path program 1 times [2021-10-24 10:13:55,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:13:55,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [74313213] [2021-10-24 10:13:55,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:13:55,428 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:13:55,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:13:55,432 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:13:55,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 10:13:55,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:13:55,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-24 10:13:55,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:13:55,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:13:55,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:13:55,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:13:55,862 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:13:55,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [74313213] [2021-10-24 10:13:55,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [74313213] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:13:55,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:13:55,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 10:13:55,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502138353] [2021-10-24 10:13:55,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 10:13:55,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:13:55,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 10:13:55,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:13:55,895 INFO L87 Difference]: Start difference. First operand has 117 states, 113 states have (on average 1.5663716814159292) internal successors, (177), 116 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:55,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:13:55,929 INFO L93 Difference]: Finished difference Result 228 states and 347 transitions. [2021-10-24 10:13:55,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 10:13:55,930 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-24 10:13:55,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:13:55,941 INFO L225 Difference]: With dead ends: 228 [2021-10-24 10:13:55,941 INFO L226 Difference]: Without dead ends: 113 [2021-10-24 10:13:55,945 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:13:55,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-24 10:13:55,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-10-24 10:13:55,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 110 states have (on average 1.5) internal successors, (165), 112 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:55,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 165 transitions. [2021-10-24 10:13:55,987 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 165 transitions. Word has length 16 [2021-10-24 10:13:55,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:13:55,988 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 165 transitions. [2021-10-24 10:13:55,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:55,988 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 165 transitions. [2021-10-24 10:13:55,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-24 10:13:55,990 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:13:55,990 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:13:56,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-24 10:13:56,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:13:56,202 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:13:56,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:13:56,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1447315652, now seen corresponding path program 1 times [2021-10-24 10:13:56,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:13:56,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [474826875] [2021-10-24 10:13:56,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:13:56,204 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:13:56,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:13:56,206 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:13:56,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 10:13:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:13:56,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:13:56,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:13:56,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:13:56,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:13:56,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:13:56,517 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:13:56,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [474826875] [2021-10-24 10:13:56,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [474826875] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:13:56,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:13:56,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 10:13:56,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458264154] [2021-10-24 10:13:56,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:13:56,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:13:56,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:13:56,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:13:56,521 INFO L87 Difference]: Start difference. First operand 113 states and 165 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:56,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:13:56,537 INFO L93 Difference]: Finished difference Result 113 states and 165 transitions. [2021-10-24 10:13:56,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:13:56,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-24 10:13:56,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:13:56,539 INFO L225 Difference]: With dead ends: 113 [2021-10-24 10:13:56,539 INFO L226 Difference]: Without dead ends: 47 [2021-10-24 10:13:56,540 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:13:56,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-24 10:13:56,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-10-24 10:13:56,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.4782608695652173) internal successors, (68), 46 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:56,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2021-10-24 10:13:56,546 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 17 [2021-10-24 10:13:56,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:13:56,546 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2021-10-24 10:13:56,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:56,547 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2021-10-24 10:13:56,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-24 10:13:56,548 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:13:56,548 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:13:56,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 10:13:56,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:13:56,764 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:13:56,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:13:56,765 INFO L82 PathProgramCache]: Analyzing trace with hash -230586389, now seen corresponding path program 1 times [2021-10-24 10:13:56,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:13:56,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [330284882] [2021-10-24 10:13:56,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:13:56,766 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:13:56,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:13:56,777 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:13:56,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 10:13:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:13:56,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:13:56,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:13:57,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:13:57,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:13:57,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:13:57,116 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:13:57,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [330284882] [2021-10-24 10:13:57,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [330284882] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:13:57,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:13:57,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 10:13:57,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441920195] [2021-10-24 10:13:57,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:13:57,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:13:57,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:13:57,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:13:57,120 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:57,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:13:57,153 INFO L93 Difference]: Finished difference Result 88 states and 130 transitions. [2021-10-24 10:13:57,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:13:57,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-24 10:13:57,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:13:57,155 INFO L225 Difference]: With dead ends: 88 [2021-10-24 10:13:57,155 INFO L226 Difference]: Without dead ends: 47 [2021-10-24 10:13:57,155 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:13:57,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-24 10:13:57,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-10-24 10:13:57,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.4565217391304348) internal successors, (67), 46 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:57,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 67 transitions. [2021-10-24 10:13:57,162 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 67 transitions. Word has length 22 [2021-10-24 10:13:57,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:13:57,162 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 67 transitions. [2021-10-24 10:13:57,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:57,162 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 67 transitions. [2021-10-24 10:13:57,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-24 10:13:57,163 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:13:57,164 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:13:57,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 10:13:57,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:13:57,377 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:13:57,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:13:57,377 INFO L82 PathProgramCache]: Analyzing trace with hash -108421843, now seen corresponding path program 1 times [2021-10-24 10:13:57,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:13:57,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676367135] [2021-10-24 10:13:57,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:13:57,388 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:13:57,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:13:57,390 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:13:57,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-24 10:13:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:13:57,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:13:57,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:13:57,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:13:57,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:13:57,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:13:57,734 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:13:57,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676367135] [2021-10-24 10:13:57,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [676367135] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:13:57,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:13:57,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 10:13:57,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765130037] [2021-10-24 10:13:57,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:13:57,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:13:57,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:13:57,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:13:57,737 INFO L87 Difference]: Start difference. First operand 47 states and 67 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:57,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:13:57,791 INFO L93 Difference]: Finished difference Result 109 states and 158 transitions. [2021-10-24 10:13:57,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:13:57,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-24 10:13:57,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:13:57,792 INFO L225 Difference]: With dead ends: 109 [2021-10-24 10:13:57,792 INFO L226 Difference]: Without dead ends: 68 [2021-10-24 10:13:57,793 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:13:57,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-24 10:13:57,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2021-10-24 10:13:57,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.4307692307692308) internal successors, (93), 65 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:57,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 93 transitions. [2021-10-24 10:13:57,803 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 93 transitions. Word has length 24 [2021-10-24 10:13:57,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:13:57,803 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 93 transitions. [2021-10-24 10:13:57,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:57,803 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 93 transitions. [2021-10-24 10:13:57,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-24 10:13:57,804 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:13:57,805 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:13:57,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-24 10:13:58,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:13:58,017 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:13:58,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:13:58,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1619186466, now seen corresponding path program 1 times [2021-10-24 10:13:58,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:13:58,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443016186] [2021-10-24 10:13:58,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:13:58,019 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:13:58,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:13:58,020 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:13:58,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-24 10:13:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:13:58,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 10:13:58,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:13:58,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:13:58,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:13:58,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:13:58,452 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:13:58,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443016186] [2021-10-24 10:13:58,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1443016186] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:13:58,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:13:58,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-24 10:13:58,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321437347] [2021-10-24 10:13:58,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:13:58,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:13:58,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:13:58,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:13:58,458 INFO L87 Difference]: Start difference. First operand 66 states and 93 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:58,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:13:58,536 INFO L93 Difference]: Finished difference Result 175 states and 245 transitions. [2021-10-24 10:13:58,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:13:58,537 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-24 10:13:58,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:13:58,539 INFO L225 Difference]: With dead ends: 175 [2021-10-24 10:13:58,539 INFO L226 Difference]: Without dead ends: 115 [2021-10-24 10:13:58,540 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:13:58,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-10-24 10:13:58,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 72. [2021-10-24 10:13:58,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.3943661971830985) internal successors, (99), 71 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:58,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 99 transitions. [2021-10-24 10:13:58,550 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 99 transitions. Word has length 30 [2021-10-24 10:13:58,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:13:58,551 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 99 transitions. [2021-10-24 10:13:58,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:58,551 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 99 transitions. [2021-10-24 10:13:58,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-24 10:13:58,552 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:13:58,552 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:13:58,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-24 10:13:58,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:13:58,768 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:13:58,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:13:58,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1043324577, now seen corresponding path program 1 times [2021-10-24 10:13:58,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:13:58,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781831373] [2021-10-24 10:13:58,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:13:58,770 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:13:58,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:13:58,771 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:13:58,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-24 10:13:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:13:59,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 10:13:59,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:13:59,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:13:59,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:13:59,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:13:59,272 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:13:59,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781831373] [2021-10-24 10:13:59,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1781831373] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:13:59,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:13:59,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-24 10:13:59,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251329983] [2021-10-24 10:13:59,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:13:59,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:13:59,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:13:59,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:13:59,283 INFO L87 Difference]: Start difference. First operand 72 states and 99 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:59,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:13:59,393 INFO L93 Difference]: Finished difference Result 382 states and 538 transitions. [2021-10-24 10:13:59,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-24 10:13:59,394 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-24 10:13:59,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:13:59,397 INFO L225 Difference]: With dead ends: 382 [2021-10-24 10:13:59,397 INFO L226 Difference]: Without dead ends: 316 [2021-10-24 10:13:59,400 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 56.3ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-24 10:13:59,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-10-24 10:13:59,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 132. [2021-10-24 10:13:59,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.381679389312977) internal successors, (181), 131 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:59,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 181 transitions. [2021-10-24 10:13:59,441 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 181 transitions. Word has length 30 [2021-10-24 10:13:59,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:13:59,441 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 181 transitions. [2021-10-24 10:13:59,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:13:59,442 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 181 transitions. [2021-10-24 10:13:59,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-24 10:13:59,445 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:13:59,445 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:13:59,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-24 10:13:59,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:13:59,646 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:13:59,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:13:59,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1715093079, now seen corresponding path program 1 times [2021-10-24 10:13:59,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:13:59,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2060953174] [2021-10-24 10:13:59,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:13:59,647 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:13:59,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:13:59,648 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:13:59,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-24 10:13:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:13:59,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 10:13:59,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:14:00,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:14:00,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:14:00,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:14:00,108 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:14:00,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2060953174] [2021-10-24 10:14:00,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2060953174] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:14:00,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:14:00,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-24 10:14:00,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138507239] [2021-10-24 10:14:00,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:14:00,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:14:00,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:14:00,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:14:00,111 INFO L87 Difference]: Start difference. First operand 132 states and 181 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:14:00,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:14:00,306 INFO L93 Difference]: Finished difference Result 378 states and 520 transitions. [2021-10-24 10:14:00,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-24 10:14:00,307 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-24 10:14:00,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:14:00,309 INFO L225 Difference]: With dead ends: 378 [2021-10-24 10:14:00,310 INFO L226 Difference]: Without dead ends: 376 [2021-10-24 10:14:00,310 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 50.1ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-24 10:14:00,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-10-24 10:14:00,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 132. [2021-10-24 10:14:00,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.3740458015267176) internal successors, (180), 131 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:14:00,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 180 transitions. [2021-10-24 10:14:00,328 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 180 transitions. Word has length 31 [2021-10-24 10:14:00,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:14:00,329 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 180 transitions. [2021-10-24 10:14:00,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:14:00,329 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 180 transitions. [2021-10-24 10:14:00,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-24 10:14:00,330 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:14:00,330 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:14:00,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-24 10:14:00,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:14:00,543 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:14:00,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:14:00,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1340444974, now seen corresponding path program 1 times [2021-10-24 10:14:00,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:14:00,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1459707808] [2021-10-24 10:14:00,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:14:00,544 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:14:00,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:14:00,545 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:14:00,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-24 10:14:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:14:00,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 10:14:00,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:14:00,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:14:00,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:14:00,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:14:00,962 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:14:00,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1459707808] [2021-10-24 10:14:00,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1459707808] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:14:00,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:14:00,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-24 10:14:00,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659287175] [2021-10-24 10:14:00,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 10:14:00,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:14:00,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 10:14:00,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:14:00,965 INFO L87 Difference]: Start difference. First operand 132 states and 180 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:14:01,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:14:01,031 INFO L93 Difference]: Finished difference Result 354 states and 478 transitions. [2021-10-24 10:14:01,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:14:01,032 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-24 10:14:01,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:14:01,033 INFO L225 Difference]: With dead ends: 354 [2021-10-24 10:14:01,033 INFO L226 Difference]: Without dead ends: 228 [2021-10-24 10:14:01,034 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 26.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:14:01,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-10-24 10:14:01,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 140. [2021-10-24 10:14:01,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.3525179856115108) internal successors, (188), 139 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:14:01,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 188 transitions. [2021-10-24 10:14:01,053 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 188 transitions. Word has length 31 [2021-10-24 10:14:01,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:14:01,053 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 188 transitions. [2021-10-24 10:14:01,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:14:01,054 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 188 transitions. [2021-10-24 10:14:01,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-24 10:14:01,054 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:14:01,054 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:14:01,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-24 10:14:01,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:14:01,271 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:14:01,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:14:01,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1082279536, now seen corresponding path program 1 times [2021-10-24 10:14:01,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:14:01,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78993781] [2021-10-24 10:14:01,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:14:01,272 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:14:01,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:14:01,274 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:14:01,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-24 10:14:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:14:01,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:14:01,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:14:01,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:14:01,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:14:01,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:14:01,779 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:14:01,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78993781] [2021-10-24 10:14:01,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [78993781] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:14:01,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:14:01,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-24 10:14:01,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399905746] [2021-10-24 10:14:01,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:14:01,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:14:01,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:14:01,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:14:01,782 INFO L87 Difference]: Start difference. First operand 140 states and 188 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:14:01,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:14:01,854 INFO L93 Difference]: Finished difference Result 430 states and 580 transitions. [2021-10-24 10:14:01,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:14:01,855 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-24 10:14:01,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:14:01,857 INFO L225 Difference]: With dead ends: 430 [2021-10-24 10:14:01,857 INFO L226 Difference]: Without dead ends: 296 [2021-10-24 10:14:01,858 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:14:01,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-10-24 10:14:01,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 244. [2021-10-24 10:14:01,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.337448559670782) internal successors, (325), 243 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:14:01,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 325 transitions. [2021-10-24 10:14:01,892 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 325 transitions. Word has length 31 [2021-10-24 10:14:01,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:14:01,892 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 325 transitions. [2021-10-24 10:14:01,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:14:01,893 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 325 transitions. [2021-10-24 10:14:01,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-24 10:14:01,898 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:14:01,898 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:14:01,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-24 10:14:02,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:14:02,111 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:14:02,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:14:02,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1099927890, now seen corresponding path program 1 times [2021-10-24 10:14:02,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:14:02,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [908190227] [2021-10-24 10:14:02,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:14:02,113 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:14:02,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:14:02,114 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:14:02,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-24 10:14:03,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:14:03,249 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:14:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:14:04,794 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-24 10:14:04,795 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:14:04,796 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:14:04,798 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:14:04,798 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:14:04,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-24 10:14:05,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:14:05,024 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:14:05,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:14:05 BoogieIcfgContainer [2021-10-24 10:14:05,125 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:14:05,125 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:14:05,125 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:14:05,126 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:14:05,126 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:13:55" (3/4) ... [2021-10-24 10:14:05,128 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 10:14:05,255 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:14:05,256 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:14:05,258 INFO L168 Benchmark]: Toolchain (without parser) took 13321.85 ms. Allocated memory was 58.7 MB in the beginning and 92.3 MB in the end (delta: 33.6 MB). Free memory was 37.3 MB in the beginning and 27.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 43.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:14:05,258 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 58.7 MB. Free memory is still 39.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:14:05,259 INFO L168 Benchmark]: CACSL2BoogieTranslator took 604.42 ms. Allocated memory is still 58.7 MB. Free memory was 37.0 MB in the beginning and 28.2 MB in the end (delta: 8.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-24 10:14:05,260 INFO L168 Benchmark]: Boogie Procedure Inliner took 114.59 ms. Allocated memory is still 58.7 MB. Free memory was 28.1 MB in the beginning and 24.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:14:05,260 INFO L168 Benchmark]: Boogie Preprocessor took 89.07 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 24.5 MB in the beginning and 56.6 MB in the end (delta: -32.0 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:14:05,261 INFO L168 Benchmark]: RCFGBuilder took 2571.84 ms. Allocated memory is still 75.5 MB. Free memory was 56.2 MB in the beginning and 46.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:14:05,261 INFO L168 Benchmark]: TraceAbstraction took 9804.54 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 46.4 MB in the beginning and 40.9 MB in the end (delta: 5.5 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:14:05,261 INFO L168 Benchmark]: Witness Printer took 131.26 ms. Allocated memory is still 92.3 MB. Free memory was 40.9 MB in the beginning and 27.9 MB in the end (delta: 13.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-24 10:14:05,264 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 58.7 MB. Free memory is still 39.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 604.42 ms. Allocated memory is still 58.7 MB. Free memory was 37.0 MB in the beginning and 28.2 MB in the end (delta: 8.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 114.59 ms. Allocated memory is still 58.7 MB. Free memory was 28.1 MB in the beginning and 24.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 89.07 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 24.5 MB in the beginning and 56.6 MB in the end (delta: -32.0 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2571.84 ms. Allocated memory is still 75.5 MB. Free memory was 56.2 MB in the beginning and 46.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9804.54 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 46.4 MB in the beginning and 40.9 MB in the end (delta: 5.5 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. * Witness Printer took 131.26 ms. Allocated memory is still 92.3 MB. Free memory was 40.9 MB in the beginning and 27.9 MB in the end (delta: 13.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 398]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L86] int waterLevel = 1; [L87] int methaneLevelCritical = 0; [L189] int cleanupTimeShifts = 4; [L405] int pumpRunning = 0; [L406] int systemActive = 1; [L779] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L268] int retValue_acc ; [L269] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L317] int retValue_acc ; [L320] retValue_acc = 1 [L321] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L275] tmp = valid_product() [L277] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L328] int splverifierCounter ; [L329] int tmp ; [L330] int tmp___0 ; [L331] int tmp___1 ; [L332] int tmp___2 ; [L335] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L337] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L339] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L345] tmp = __VERIFIER_nondet_int() [L347] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L104] COND TRUE waterLevel < 2 [L105] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L355] tmp___0 = __VERIFIER_nondet_int() [L357] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L116] COND FALSE !(\read(methaneLevelCritical)) [L119] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L365] tmp___2 = __VERIFIER_nondet_int() [L367] COND TRUE \read(tmp___2) [L605] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L412] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L419] COND TRUE \read(systemActive) [L467] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L470] COND FALSE !(\read(pumpRunning)) [L441] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L444] COND TRUE ! pumpRunning [L564] int retValue_acc ; [L565] int tmp ; [L566] int tmp___0 ; [L166] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L169] COND FALSE !(waterLevel < 2) [L173] retValue_acc = 0 [L174] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L570] tmp = isHighWaterSensorDry() [L572] COND FALSE !(\read(tmp)) [L575] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L577] retValue_acc = tmp___0 [L578] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L446] tmp = isHighWaterLevel() [L448] COND TRUE \read(tmp) [L495] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L54] int tmp ; [L55] int tmp___0 ; [L125] int retValue_acc ; [L128] retValue_acc = methaneLevelCritical [L129] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L59] tmp = isMethaneLevelCritical() [L61] COND TRUE \read(tmp) [L519] int retValue_acc ; [L522] retValue_acc = pumpRunning [L523] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L63] tmp___0 = isPumpRunning() [L65] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L398] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - UnprovableResult [Line: 398]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 398]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 117 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 9646.7ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 25.9ms, AutomataDifference: 733.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 847 SDtfs, 1123 SDslu, 1167 SDs, 0 SdLazy, 153 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 228.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 462 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 214.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=244occurred in iteration=9, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 171.1ms AutomataMinimizationTime, 9 MinimizatonAttempts, 613 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 207.8ms SsaConstructionTime, 2017.5ms SatisfiabilityAnalysisTime, 1757.2ms InterpolantComputationTime, 264 NumberOfCodeBlocks, 264 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 446 ConstructedInterpolants, 0 QuantifiedInterpolants, 734 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1831 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-24 10:14:05,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1222e5d2-4ee7-4014-ad81-8da182984f8d/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...